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Chukkalore D, Loeffler J, Rabah H, Amarnath S, Al Moussawi H, Deeb L. A Diagnosis of Gastric Inflammatory Myofibroblast Tumor: A Challenge Like No Other! ACG Case Rep J 2024; 11:e01416. [PMID: 38988714 PMCID: PMC11236408 DOI: 10.14309/crj.0000000000001416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 05/31/2024] [Indexed: 07/12/2024] Open
Abstract
Inflammatory myofibroblastic tumors (IMTs) are mesenchymal tumors of intermediate malignant potential. Gastric IMTs are rare and commonly affect young adults. They are typically confused with gastrointestinal stromal tumors, inflammatory fibroid polyps, and leiomyosarcomas. The etiology of IMTs remains unclear, but is theorized to be due to hyperinflammatory response to chronic infections. We present a middle-aged woman found to have a gastric mass positive for Helicobacter pylori, underwent multiple endoscopies with endoscopic ultrasound, and a definitive diagnosis of gastric IMT was only made after a partial gastrectomy with immunohistochemistry negative for CD-117, S-100, ALK-1, and positive for vimentin and SMA.
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Affiliation(s)
- Divya Chukkalore
- Department of Internal Medicine, Zucker School of Medicine at Hofstra/Northwell at Staten Island University Hospital, Staten Island, NY
| | - Jeffrey Loeffler
- Department of Internal Medicine, Zucker School of Medicine at Hofstra/Northwell at Staten Island University Hospital, Staten Island, NY
| | - Hussein Rabah
- Department of Internal Medicine, Zucker School of Medicine at Hofstra/Northwell at Staten Island University Hospital, Staten Island, NY
| | - Shivantha Amarnath
- Department of Gastroenterology & Hepatology, Zucker School of Medicine at Hofstra/Northwell at Staten Island University Hospital, Staten Island, NY
| | - Hassan Al Moussawi
- Department of Gastroenterology & Hepatology, Zucker School of Medicine at Hofstra/Northwell at Staten Island University Hospital, Staten Island, NY
| | - Liliane Deeb
- Department of Gastroenterology & Hepatology, Zucker School of Medicine at Hofstra/Northwell at Staten Island University Hospital, Staten Island, NY
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Devins KM, Ordulu Z, Mendoza RP, Croce S, Haridas R, Wanjari P, Pinto A, Oliva E, Bennett JA. Uterine Inflammatory Myofibroblastic Tumors: p16 as a Surrogate for CDKN2A Deletion and Predictor of Aggressive Behavior. Am J Surg Pathol 2024; 48:813-824. [PMID: 38630911 DOI: 10.1097/pas.0000000000002220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Uterine inflammatory myofibroblastic tumors (IMTs) are rare mesenchymal neoplasms of uncertain malignant potential. Aside from the recently described risk stratification score, which has not been validated by other studies, and rare reports of aberrant p16 expression in malignant tumors, there are no criteria to reliably predict behavior. Herein, we evaluated the clinicopathologic features and p16 expression patterns in 30 IMTs, with genomic profiling performed in a subset (13 malignant, 3 benign). Fifteen patients had malignant IMTs, defined by extrauterine disease at diagnosis (n=5) or recurrence (n=10; median: 24 mo). Patients ranged from 8 to 65 (median: 51) years and tumors from 6 to 22 (median: 12.5) cm. In primary tumors (n=13), infiltrative borders were noted in 10, moderate/severe cytologic atypia in 9, tumor cell necrosis in 7, and lymphovascular invasion in 6, while mitoses ranged from 0 to 21 (median: 7) per 10 high-power fields. In contrast, 15 patients with benign IMTs ranged from 28 to 65 (median: 44) years, with follow-up of 18 to 114 (median: 41) months. Tumors ranged from 1.9 to 8.5 (median: 5.5) cm, 2 demonstrated infiltrative borders, and 1 had moderate cytologic atypia. No other high-risk histologic features were observed. Application of the previously described clinicopathologic risk stratification score in all primary IMTs with complete data (n=18) classified 8 as high-risk (all malignant), 8 as intermediate-risk (3 malignant, 5 benign), and 2 as low-risk (benign). p16 was aberrant in all malignant IMTs, with <1% expression noted in 10, overexpression (>90%) in 4, and subclonal loss in 1; all benign tumors had patchy staining (20% to 80%; median 50%). Molecular analysis detected CDKN2A deletions in 8 of 9 tumors with <1% p16 expression, while the other harbored a TERT promoter mutation. TERT promoter mutations were also identified in 2 of 3 IMTs with p16 overexpression. Neither of these alterations was detected in the 3 sequenced benign IMTs. Thus, we recommend performing p16 on all uterine IMTs, which, combined with the risk stratification score, is a promising and cost-effective tool for predicting CDKN2A status and outcome in these patients. It may be particularly useful for tumors with incomplete information for risk stratification (ie, morcellated tumors) and for further stratifying intermediate-risk IMTs when sequencing is unavailable.
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Affiliation(s)
- Kyle M Devins
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Zehra Ordulu
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL
| | - Rachelle P Mendoza
- Department of Pathology and Laboratory Medicine, University of Rochester, Rochester, NY
| | - Sabrina Croce
- Department of Biopathology, Institut Bergonie, Bordeaux, France
| | | | | | - Andre Pinto
- Department of Pathology, University of Miami, Miami, FL
| | - Esther Oliva
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
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Khurana E, Mody S, Shah T, Bouffard JP, Pedemonte M, Holover G, Lee JS, Jacob G, Scheid S, Morin R, Mazzola C. Pediatric skull inflammatory myofibroblastic tumor: a rare case report and literature review. Childs Nerv Syst 2024:10.1007/s00381-024-06512-7. [PMID: 38918263 DOI: 10.1007/s00381-024-06512-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/19/2024] [Indexed: 06/27/2024]
Abstract
Inflammatory myofibroblastic tumors (IMTs) represent rare neoplasms, particularly infrequent in the pediatric skull. We present a novel case of a newborn male with a 5 cm right temporal mass and discuss current diagnostic and treatment options for IMTs. A multidisciplinary effort to surgically remove the lesion was successful, and the patient's skull defect healed without neurological deficits. The etiology of IMTs remains elusive, with proposed associations with chromosomal mutations in the anaplastic lymphoma kinase (ALK) gene. Surgical excision remains the primary treatment for IMTs. Promising pharmacological treatments, like Crizotinib, warrant further research into understanding potential alternatives in IMT management.
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Affiliation(s)
| | - Shaan Mody
- NJ Craniofacial Center, Morristown, NJ, 07960, USA
| | - Tanisha Shah
- NJ Craniofacial Center, Morristown, NJ, 07960, USA
| | | | - Maria Pedemonte
- Department of Pathology, Atlantic Health System, Summit, NJ, 07960, USA
| | | | | | - Gregg Jacob
- NJ Craniofacial Center, Morristown, NJ, 07960, USA
| | - Sara Scheid
- NJ Craniofacial Center, Morristown, NJ, 07960, USA
| | - Robert Morin
- NJ Craniofacial Center, Morristown, NJ, 07960, USA
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Zhao M, Song J, Yin X, Xu J, Teng X, Wang J. ALK-rearranged mesenchymal neoplasms: a clinicopathological and molecular study of eight additional cases of an emerging group of tyrosine kinase fusion mesenchymal tumours. J Clin Pathol 2024:jcp-2024-209521. [PMID: 38839088 DOI: 10.1136/jcp-2024-209521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 04/22/2024] [Indexed: 06/07/2024]
Abstract
AIMS Mesenchymal neoplasms characterised by ALK fusions mainly include inflammatory myofibroblastic tumour (IMT) and epithelioid fibrous histiocytoma (EFH). Most recently, ALK-rearranged mesenchymal tumours that are not IMT or EFH have been reported. Our aim is to further characterise eight such neoplasms, with a detailed clinicopathological, immunohistochemical and molecular analysis. METHODS Clinicopathological features were assessed and partner agnostic targeted RNA-sequencing on clinically validated platforms was performed. RESULTS The patients consisted of seven males and one female with a median age of 47 years (28 -59 years). The tumours ranged in size from 2.0 to 10.0 cm (mean=3.0 cm) and involved superficial and deep soft tissue (n=6) and visceral locations (n=2). Of the seven patients with follow-up (9-130 months), two developed distant metastases and five had no disease recurrence or metastasis. The tumours demonstrated diverse architectures and variable cellularity and cellular morphologies. The main constitutive cells appeared in elongated spindled in three, primitive to ovoid in two and round to epithelioid in three cases. We expanded the histopathological spectrum to include mildly to moderately cellular spindled to stellate cells in a multinodular growth in a prominent myxoid and vascularised stroma (n=2). All tumours expressed ALK(D5F3); seven were positive for S100 protein and six were positive for CD34. By fluorescence in situ hybridisation, ALK rearrangement was identified in all eight tumours. ALK fusion partners were identified by RNA-sequencing in all cases, including previously reported: EML4 (n=3), DCTN (n=1), CLIP1 (n=1) and PLEKHH2 (n=1), and also two novel fusion partners: TKT (n=1) and MMP2 (n=1). CONCLUSIONS Our study expands the clinicopathological and molecular spectrum of ALK-rearranged mesenchymal neoplasms.
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Affiliation(s)
- Ming Zhao
- Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Jing Song
- Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Xiaona Yin
- Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Jiayun Xu
- Ningbo Clinical Pathology Diagnosis Center, Ningbo, China
| | - Xiaodong Teng
- Department of Pathology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jian Wang
- Department of Pathology, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University; Institute of Pathology, Fudan University, Shanghai, China
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Chen CJ, Yin JF, Zhao JW, Zhao X, Zhang HX, Chen M, Peng DY. Inflammatory Myofibroblastic Tumor of the Sciatic Nerve Mimicking Lumbar Disc Herniation: A Diagnostic Challenge. World J Oncol 2024; 15:521-525. [PMID: 38751705 PMCID: PMC11092406 DOI: 10.14740/wjon1777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 03/16/2024] [Indexed: 05/18/2024] Open
Abstract
Inflammatory myofibroblastic tumors (IMTs), which involve the proliferation of fibroblastic-myofibroblastic cells mixed with inflammatory infiltrates, are exceedingly rare in the extremities. There are no reported IMTs involving the sciatic nerve. This type of involvement may cause entrapment of the sciatic nerve, whose symptoms may mimic lumbar disc herniation (LDH), especially when it occurs in patients with lumbar degenerative disc disease. We describe the case of a 40-year-old male with lumbar degenerative disc disease accompanied by IMT involving the sciatic nerve whose symptoms mimicked LDH and posed a diagnostic challenge. We showed the course of the disease as well as the systematic imaging manifestations of IMTs involving the sciatic nerve and discussed their therapeutic management.
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Affiliation(s)
- Chang Jun Chen
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan, China
- Chang Jun Chen and Jun Feng Yin contributed equally to this work
| | - Jun Feng Yin
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan, China
- Chang Jun Chen and Jun Feng Yin contributed equally to this work
| | - Jing Wen Zhao
- International Medical Center, Affiliated Hospital of Qingdao University Medical College, Qingdao, China
| | - Xin Zhao
- Department of Orthopedic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Hao Xuan Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan, China
| | - Meng Chen
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan, China
| | - Da Yong Peng
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan, China
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Lowe E, Mossé YP. Podcast on Emerging Treatment Options for Pediatric Patients with ALK-Positive Anaplastic Large Cell Lymphoma and Inflammatory Myofibroblastic Tumors. Oncol Ther 2024; 12:247-255. [PMID: 38676786 PMCID: PMC11187053 DOI: 10.1007/s40487-024-00275-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 03/25/2024] [Indexed: 04/29/2024] Open
Abstract
Anaplastic large cell lymphoma (ALCL) and inflammatory myofibroblastic tumor (IMT) are rare cancers observed predominantly in children and young adults. ALCL accounts for 10-15% of all pediatric non-Hodgkin lymphomas and is commonly diagnosed at an advanced stage of disease. In children, 84-91% of cases of ALCL harbor an anaplastic lymphoma kinase (ALK) gene translocation. IMT is a rare mesenchymal neoplasm that also tends to occur in children and adolescents. Approximately 50-70% of IMT cases involve rearrangements in the ALK gene. A combination of chemotherapeutic drugs is typically used for children with ALK-positive ALCL, and the only known curative therapy for ALK-positive IMT is complete surgical resection. Crizotinib, a first-generation ALK inhibitor, was approved in the USA in 2021 for pediatric patients and young adults with relapsed or refractory ALK-positive ALCL; however, its safety and efficacy have not been established in older adults. In 2022, crizotinib was approved for adult and pediatric patients with unresectable, recurrent, or refractory ALK-positive IMT. This podcast provides an overview of ALK-positive ALCL and IMT. We discuss the current treatment landscape, the role of ALK tyrosine kinase inhibitors, and areas of future research.
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Affiliation(s)
- Eric Lowe
- Children's Hospital of The King's Daughters, Norfolk, VA, USA
| | - Yael P Mossé
- Division of Oncology and Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA.
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Liu M, Zhu D. Two cases of inflammatory myofibroblastic tumor treated with targeted drugs: A case report. Medicine (Baltimore) 2024; 103:e38136. [PMID: 38787978 PMCID: PMC11124583 DOI: 10.1097/md.0000000000038136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/15/2024] [Indexed: 05/26/2024] Open
Abstract
INTRODUCTION Inflammatory myofibroblastic tumor (IMT) is a rare invasive soft tissue tumor. Many IMTs are positive for anaplastic lymphoma kinase (ALK) with ALK gene fusion; other gene mutations have also been reported, which indicates a key role for genetic testing and the development of target therapy to optimize treatment strategies. PATIENT CONCERNS We report 2 patients who obtained clinical benefits following targeted treatment with ensartinib. DIAGNOSIS The first patient was diagnosed as IMT, with TFG-ROS1 fusion gene mutation. The second patient was IMT harboring the ALK-STRN fusion gene mutation. INTERVENTIONS We performed gene testing for these 2 patients. According to the test result, both patients received ensartinib 225 mg QD as targeted therapy for a 30-day cycle. OUTCOMES The first patient achieved partial remission and maintained a stable state for 14.7 months. The second patient was treated for 10 months and reached complete remission after 5 months and is currently still benefiting from treatment. Treatment-related side effects were mild in both patients. CONCLUSION Our cases provided some new insights and approaches for the clinical diagnosis and treatment of IMT.
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Affiliation(s)
- Mengyao Liu
- Rare Tumors Department, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Dongyuan Zhu
- Rare Tumors Department, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
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8
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Molina GA, Ludeña C, Carrera PA, Heredia AE, Jimenez GE, Parrales DE, Portilla CA, Martinez SN, Ochoa-Andrade MJ. Inflammatory myofibroblastic tumor of the cecum presenting as acute abdomen, a rare pathology with a rarer presentation. J Surg Case Rep 2024; 2024:rjae330. [PMID: 38803840 PMCID: PMC11129661 DOI: 10.1093/jscr/rjae330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 05/01/2024] [Indexed: 05/29/2024] Open
Abstract
Inflammatory myofibroblastic tumor is an extremely rare neoplastic lesion with a predilection for aggressive local and recurrent behavior. The tumor tends to occur in the lungs of children and young adults, and although it can develop in older patients and other organs, this is extremely rare. Symptoms are nonspecific and depend on the location and size of the tumor. The gastrointestinal tract is rarely this mass's primary site of origin, and the cecum is an even rarer location. We present the case of an otherwise healthy 55-year-old female who presented with an acute abdomen and a mass in her abdomen; after successful surgery, she fully recovered. Inflammatory myofibroblastic tumor causing acute abdomen was the final diagnosis.
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Affiliation(s)
- Gabriel A Molina
- USFQ (Universidad San Francisco de Quito) - Colegio de Ciencias de la Salud, 170902, Quito, Ecuador
| | - Carolina Ludeña
- PGY3 UDLA (Universidad de las Américas) - School of Medicine, 170513, Quito, Ecuador
| | | | | | - Galo E Jimenez
- Department of Surgery Iess Quito Sur, 170111, Quito, Ecuador
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9
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Wakefield C, Hornick JL. Update on immunohistochemistry in bone and soft tissue tumors: Cost-effectively replacing molecular testing with immunohistochemistry. Hum Pathol 2024; 147:58-71. [PMID: 38135060 DOI: 10.1016/j.humpath.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/15/2023] [Accepted: 12/19/2023] [Indexed: 12/24/2023]
Abstract
Soft tissue tumors form part of a challenging domain in diagnostic pathology owing to their comparative rarity, astonishing histologic diversity, and overlap between entities. Many of these tumors are now known to be defined by highly recurrent, or, in some instances, unique molecular alterations. Insights from gene profiling continue to elucidate the wider molecular landscape of soft tissue tumors; many of these advances have been co-opted by immunohistochemistry (IHC) for diagnostic applications. There now exists a multitude of antibodies serving as surrogate markers of recurrent gene fusions, amplifications, and point mutations, which, in certain settings, can replace the need for more resource and time-intensive cytogenetic and molecular genetic analyses. IHC presents many advantages including rapid turnaround time, cost-effectiveness, and interpretative reproducibility. A sensible application of these immunohistochemical markers complemented by a working knowledge of the molecular pathogenesis of bone and soft tissue tumors permits accurate diagnosis in the majority of cases. In this review, we will outline some of these biomarkers while emphasizing molecular correlates and highlighting interpretative challenges and pitfalls.
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Affiliation(s)
- Craig Wakefield
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Jason L Hornick
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States.
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10
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Yang H, Lai B. Inflammatory myofibroblastoma mimicking cavernous hemangioma in the liver. Liver Int 2024; 44:1265-1266. [PMID: 38407558 DOI: 10.1111/liv.15884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/02/2024] [Accepted: 02/16/2024] [Indexed: 02/27/2024]
Abstract
A 37-year-old female patient was admitted to the hospital with a large liver mass, diagnosed as hepatic inflammatory myofibroblastic tumour (HIMT), characterized by unique radiographic features and predominantly occurring in adults. HIMT consists of myofibroblast spindle cells infiltrated by plasma cells and/or lymphocytes, with an unclear aetiology linked to factors like infection and immune response. Treatment typically involves surgical resection, with chemotherapy or targeted therapy options for cases of incomplete resection or metastasis, emphasizing the need for precise diagnosis and tailored treatment strategies.
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Affiliation(s)
- Hong Yang
- Ganzhou Institute of Medical Imaging, Ganzhou Key Laboratory of Medical Imaging and Artificial Intelligence, Medical Imaging Center, Ganzhou People's Hospital, The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou Hospital-Nanfang Hospital, Southern Medical University, Ganzhou, P.R. China
| | - Binglin Lai
- Ganzhou Institute of Medical Imaging, Ganzhou Key Laboratory of Medical Imaging and Artificial Intelligence, Medical Imaging Center, Ganzhou People's Hospital, The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou Hospital-Nanfang Hospital, Southern Medical University, Ganzhou, P.R. China
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11
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Prasad AS, Shanbhogue KP, Ramani NS, Balasubramanya R, Surabhi VR. Non-gastrointestinal stromal tumor, mesenchymal neoplasms of the gastrointestinal tract: a review of tumor genetics, pathology, and cross-sectional imaging findings. Abdom Radiol (NY) 2024; 49:1716-1733. [PMID: 38691132 DOI: 10.1007/s00261-024-04329-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 05/03/2024]
Abstract
There is a diverse group of non-gastrointestinal stromal tumor (GIST), mesenchymal neoplasms of the gastrointestinal (GI) tract that demonstrate characteristic pathology and histogenesis as well as variable imaging findings and biological behavior. Recent advancements in tumor genetics have unveiled specific abnormalities associated with certain tumors, influencing their molecular pathogenesis, biology, response to treatment, and prognosis. Notably, giant fibrovascular polyps of the esophagus, identified through MDM2 gene amplifications, are now classified as liposarcomas. Some tumors exhibit distinctive patterns of disease distribution. Glomus tumors and plexiform fibromyxomas exhibit a pronounced affinity for the gastric antrum. In contrast, smooth muscle tumors within the GI tract are predominantly found in the esophagus and colorectum, surpassing the incidence of GISTs in these locations. Surgical resection suffices for symptomatic benign tumors; multimodality treatment may be necessary for frank sarcomas. This article aims to elucidate the cross-sectional imaging findings associated with a wide spectrum of these tumors, providing insights that align with their histopathological features.
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Affiliation(s)
| | | | - Nisha S Ramani
- Department of Pathology, Michael E. DeBakey VA Medical Center, Houston, USA
| | | | - Venkateswar R Surabhi
- Department of Abdominal Imaging, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 1473, Houston, TX, 77030, USA.
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12
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Karibe J, Teranishi J, Kawahara T, Noguchi T, Takeshima T, Osaka K, Kumagai E, Sawazumi T, Fujii S, Uemura H. A diagnostically challenging case of inflammatory myofibroblastic tumor primary to the peritoneum. IJU Case Rep 2024; 7:206-209. [PMID: 38686080 PMCID: PMC11056253 DOI: 10.1002/iju5.12701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/24/2024] [Indexed: 05/02/2024] Open
Abstract
Introduction Inflammatory myofibroblastic tumors are difficult to diagnose because of the lack of specific indicators. We describe a diagnostically challenging case of an inflammatory myofibroblastic tumor primary to the peritoneum. Case presentation The patient was a 25-year-old male who presented at our hospital with lower abdominal pain. Computed tomography revealed a mass lesion 80 mm in diameter just above the bladder. This was suspected to be a bleeding tumor of the urachus. Since malignancy could not be ruled out, surgery was planned. This revealed a fragile tumor arising from the peritoneum. Following its removal, the tumor was diagnosed by histopathological analysis as an inflammatory myofibroblastic tumor. Conclusion We describe a case of inflammatory myofibroblastic tumor primary to the peritoneum diagnosed by histopathology. Inflammatory myofibroblastic tumor should be considered in the differential diagnosis of abdominal wall and anterior bladder tumors.
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Affiliation(s)
- Jurii Karibe
- Department of Urology and Renal TransplantationYokohama City University Medical CenterYokohamaJapan
| | - Jun‐ichi Teranishi
- Department of Urology and Renal TransplantationYokohama City University Medical CenterYokohamaJapan
| | - Takashi Kawahara
- Department of Urology and Renal TransplantationYokohama City University Medical CenterYokohamaJapan
| | - Takeaki Noguchi
- Department of Urology and Renal TransplantationYokohama City University Medical CenterYokohamaJapan
| | - Teppei Takeshima
- Department of Urology and Renal TransplantationYokohama City University Medical CenterYokohamaJapan
| | - Kimito Osaka
- Department of Urology and Renal TransplantationYokohama City University Medical CenterYokohamaJapan
| | - Eita Kumagai
- Department of PathologyYokohama City University Medical CenterYokohamaJapan
| | - Tomoe Sawazumi
- Department of PathologyYokohama City University Medical CenterYokohamaJapan
| | - Satoshi Fujii
- Department of PathologyYokohama City University Medical CenterYokohamaJapan
- Department of PathologyYokohama City University HospitalYokohamaJapan
- Department of Molecular PathologyYokohama City University Graduate School of MedicineYokohamaJapan
| | - Hiroji Uemura
- Department of Urology and Renal TransplantationYokohama City University Medical CenterYokohamaJapan
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13
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Billingsley BC, Chaudhary R, Morris MW, Cox JA, Camacho-Gomez SM, Varshney N. Inflammatory Myofibroblastic Tumor of the Esophagus and Stomach Successfully Treated With ALK Inhibitor in a Pediatric Patient: A Case Report and Concise Review of Literature. Int J Surg Pathol 2024:10668969241246470. [PMID: 38656257 DOI: 10.1177/10668969241246470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
An inflammatory myofibroblastic tumor (IMT) is a rare mesenchymal neoplasm of borderline malignant potential. Nearly half of all IMTs have rearrangement of anaplastic lymphoma kinase (ALK) locus on chromosome 2p23 which can be treated with targeted therapy. Herein, we describe an unusual presentation of IMT involving an anatomical region rarely implicated in this disease process. A 15-year-old male patient came to the ER with dysphagia and coffee ground emesis. On esophagogastroscopy, a nodular luminal obstructing 30 × 50 mm mass in the lower esophagus was found, which was continuous with a large, partially circumferential gastric mass extending from the mid-body to the proximal antrum. Biopsies from esophageal and gastric masses revealed submucosal lesions composed of cytologically bland spindle and epithelioid cells, intermingled with inflammatory infiltrate, for which several immunohistochemical (IHC) stains were performed. The molecular study demonstrated ATIC::ALK fusion. Based on morphological, IHC, and molecular study findings, the diagnosis of ALK-positive IMT was rendered. Because surgical excision was deemed infeasible, the patient was started on ALK-inhibiting therapy with crizotinib. The patient responded well with no evidence of residual or recurrent disease on follow-up imaging or surveillance esophagogastroduodenoscopy. Crizotinib was ultimately discontinued after 10 months of therapy, and the patient continues to undergo surveillance imaging for monitoring of disease burden.
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Affiliation(s)
- Benjamin C Billingsley
- Department of Internal Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - Ritica Chaudhary
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Michael W Morris
- Division of Pediatric, Department of Surgery, University of Mississippi Medical Center, Jackson, MS, USA
| | - Jennifer A Cox
- Division of Hematology and Oncology, Department of Pediatrics, University of Mississippi Medical Center, Jackson, MS, USA
| | - Sandra M Camacho-Gomez
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Texas at Austin, Austin, TX, USA
| | - Neha Varshney
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA
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14
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Tong D, Chisholm J, Madden B, Ahmed M. Anaplastic lymphoma kinase-positive pulmonary inflammatory myofibroblastic tumour: a case report. J Med Case Rep 2024; 18:167. [PMID: 38594735 PMCID: PMC11005263 DOI: 10.1186/s13256-024-04472-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 02/23/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Pulmonary inflammatory myofibroblastic tumour (IMT) is a rare condition that usually presents in young individuals and is associated with anaplastic lymphoma kinase (ALK)-translocation. CASE PRESENTATION We report a case of an 18-year-old Caucasian man with ALK-translocated pulmonary IMT treated with multimodality therapy. The patient presented with breathlessness and was found to have a collapsed left lung. Further investigations revealed an ALK-translocated pulmonary IMT. This is usually treated with an ALK-inhibitor but patient declined after discussing potential side-effects and had repeated rigid bronchoscopic interventions for local disease control. Due to persistent local recurrence, patient received radical external beam radiotherapy (EBRT) with pulse steroids, and one year later started on Ibuprofen, a non-steroidal anti-inflammatory agent (NSAID). Following multimodality treatment, he developed a complete response. He remains treatment-free for the past seven years. Eleven years on from his diagnosis, he remains in remission with a ECOG performance status of zero. CONCLUSIONS Achieving long-term local control in pulmonary IMT can be challenging. Multimodality treatment is sometimes needed but the overall outlook remains good.
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Affiliation(s)
- Daniel Tong
- Lung Unit, The Royal Marsden NHS Foundation Trust, Sutton, UK.
| | - Julia Chisholm
- Children and Young People's Unit, Institute of Cancer Research, Royal Marsden Hospital, Sutton, SM2 5NG, UK
| | - Brendan Madden
- Department of Cardiothoracic Medicine, St Georges Hospital, Blackshaw Road, London, SW17 0QT, UK
| | - Merina Ahmed
- Lung Unit, The Royal Marsden NHS Foundation Trust, Sutton, UK
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15
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Sreepriya PP, Ali MM, Rashi R, Kumar A, Sinha AK, Raj S, Kumar B. Inflammatory Myofibroblastic Tumour in Children: A Report of Two Cases and Review of Literature. Afr J Paediatr Surg 2024; 21:134-137. [PMID: 38546252 PMCID: PMC11003571 DOI: 10.4103/ajps.ajps_106_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/03/2022] [Accepted: 10/10/2022] [Indexed: 02/17/2023] Open
Abstract
ABSTRACT Inflammatory myofibroblastic tumour in paediatric patients present with a diagnostic dilemma because of its clinical, radiological and histopathological features overlapping with other mesenchymal tumours common in this age. Because of its rarity, the exact features are still unclear. Here, we are reporting clinical, radiological and histopathological appearances of two such cases. In both cases, the exact diagnosis was confirmed only after immunohistochemistry. There is a need for further detailed study to exactly determine the natural course and prognosis of these tumours.
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Affiliation(s)
- P. P. Sreepriya
- Department of General Surgery, All India Institute of Medical Sciences, Patna, Bihar, India
| | - Md Mokarram Ali
- Department of Paediatric Surgery, Pt B. D. S. PGIMS, Rohtak, Haryana, India
| | - Rashi Rashi
- Department of Paediatric Surgery, All India Institute of Medical Sciences, Patna, Bihar, India
| | - Amit Kumar
- Department of Paediatric Surgery, All India Institute of Medical Sciences, Patna, Bihar, India
| | - Amit Kumar Sinha
- Department of Paediatric Surgery, All India Institute of Medical Sciences, Patna, Bihar, India
| | - Surabhi Raj
- Department of Pathology, All India Institute of Medical Sciences, Patna, Bihar, India
| | - Bindey Kumar
- Department of Paediatric Surgery, All India Institute of Medical Sciences, Patna, Bihar, India
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16
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Hage L, O’Donnell MA, Abou Chakra M, Kime A, Sibony M, Peyromaure M, Duquesne I. Inflammatory myofibroblastic tumor of the urinary bladder: A systematic review of the literature and report of a case. Indian J Urol 2024; 40:88-95. [PMID: 38725889 PMCID: PMC11078447 DOI: 10.4103/iju.iju_50_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 05/12/2024] Open
Abstract
Introduction Inflammatory myofibroblastic tumors (IMTs) are intermediate-grade lesions that frequently recur and rarely metastasize. There are currently no guidelines on the management of bladder IMTs. This systematic review aims to describe the clinical presentation and compare the management options for bladder IMTs. Methods A PubMed/Medline search was conducted, according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, using the following Mesh terms: ("inflammatory myofibroblastic") AND ("tumor") OR ("tumor") AND ("bladder") AND ("case report"). A total of 75 case reports were included in the analysis. Results The mean age of the patients was 36 years. 65% of the cases initially presented with hematuria. 68% of the tumors stained positive for anaplastic lymphoma kinase, and 20% invaded the muscularis. Patients underwent either transurethral resection of the bladder tumor (TURBT) only (34%), TURBT followed by complementary partial cystectomy (16%), or TURBT followed by radical cystectomy (4%). 36% and 9% of the cases underwent partial and radical cystectomy after the initial diagnosis, respectively. Cystectomies were performed using an open (74%), laparoscopic (14%), robotic-assisted (10%), or unknown (2%) approach. At a mean follow-up of 14 months, the recurrence and metastasis rates were about 9% and 4%, respectively. In addition, we present the case of a 49-year-old woman with a bladder IMT who underwent TURBT followed by laparoscopic partial cystectomy. The patient remains tumor free postoperatively (follow-up period of 12 months). Conclusion A complete surgical excision of the bladder IMT is crucial for the optimal management of these cases. Proper differentiation of this tumor from sarcoma or leiomyosarcoma leads to the best outcomes.
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Affiliation(s)
- Lory Hage
- Department of Urology, Cochin Hospital, Assistance Publique-Hopitaux de Paris, Universite Paris Cite, Paris, France
| | - Michael A O’Donnell
- Department of Urology, The University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Mohamad Abou Chakra
- Department of Urology, The University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Amel Kime
- Department of Pathology, Cochin Hospital, Assistance Publique-Hopitaux de Paris, Universite Paris Cite, Paris, France
| | - Mathilde Sibony
- Department of Pathology, Cochin Hospital, Assistance Publique-Hopitaux de Paris, Universite Paris Cite, Paris, France
| | - Michaël Peyromaure
- Department of Urology, Cochin Hospital, Assistance Publique-Hopitaux de Paris, Universite Paris Cite, Paris, France
| | - Igor Duquesne
- Department of Urology, Cochin Hospital, Assistance Publique-Hopitaux de Paris, Universite Paris Cite, Paris, France
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17
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Masuda Y, Kanazawa Y, Goto O, Kakinuma D, Higuchi K, Koizumi E, Nakata R, Sakurazawa N, Ando F, Suzuki M, Yoshiyuki T, Kato S, Ohashi R, Kaise M, Iwakiri K, Yoshida H. Primary gastric inflammatory myofibroblastic tumor treated with non-exposed endoscopic wall-inversion surgery (NEWS): A case report and literature review. DEN OPEN 2024; 4:e243. [PMID: 37168273 PMCID: PMC10165463 DOI: 10.1002/deo2.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/17/2023] [Accepted: 04/22/2023] [Indexed: 05/13/2023]
Abstract
Inflammatory myofibroblastic tumor (IMT) is an intermediate malignancy with myofibroblast proliferation and inflammatory cell infiltration with malignant potential. Primary IMTs are predominantly reported in the lungs, while gastric IMTs are very rare. Therefore, no guidelines exist for the diagnosis and treatment of gastric IMTs. The present case is a 39-year-old man diagnosed with an asymptomatic gastric submucosal tumor. Considering the malignancy of the tumor, we selected non-exposed endoscopic wall-inversion surgery as the resection method and successfully performed local resection. Histopathological analysis showed myofibroblast proliferation and inflammatory cell infiltration, with a diagnosis of primary gastric IMT and negative resection margins. Immunohistochemical staining was negative for anaplastic lymphoma kinase. To the best of our knowledge, including our case, there have been 52 reported cases of primary gastric IMTs that have been treated, with several recurrent cases. In this study, we report the first case of local resection of gastric IMT using non-exposed endoscopic wall-inversion surgery, with a literature review.
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Affiliation(s)
- Yuka Masuda
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Yoshikazu Kanazawa
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Osamu Goto
- Department of GastroenterologyNippon Medical School HospitalTokyoJapan
| | - Daisuke Kakinuma
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Kazutoshi Higuchi
- Department of GastroenterologyNippon Medical School HospitalTokyoJapan
| | - Eriko Koizumi
- Department of GastroenterologyNippon Medical School HospitalTokyoJapan
| | - Ryosuke Nakata
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Nobuyuki Sakurazawa
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Fumihiko Ando
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Mikito Suzuki
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Toshiro Yoshiyuki
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Shunji Kato
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
| | - Ryuji Ohashi
- Department of Diagnostic PathologyNippon Medical School HospitalTokyoJapan
| | - Mitsuru Kaise
- Department of GastroenterologyNippon Medical School HospitalTokyoJapan
| | - Katsuhiko Iwakiri
- Department of GastroenterologyNippon Medical School HospitalTokyoJapan
| | - Hiroshi Yoshida
- Department of Gastrointestinal and Hepato‐biliary‐pancreatic SurgeryNippon Medical School HospitalTokyoJapan
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18
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Parker NC, Singanallur P, Faiek S, Gao J, White P. Inflammatory Myofibroblastic Tumor After Receiving Treatment for Non-small Cell Carcinoma. Cureus 2024; 16:e59359. [PMID: 38817466 PMCID: PMC11138368 DOI: 10.7759/cureus.59359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2024] [Indexed: 06/01/2024] Open
Abstract
Inflammatory pseudotumor encompasses a spectrum of both neoplastic and non-neoplastic conditions characterized by a histological pattern featuring a proliferation of cytologically bland spindle cells, accompanied by a prominent chronic inflammatory infiltrate. Within this spectrum, inflammatory myofibroblastic tumor (IMT) has emerged as a distinct entity over the past two decades, marked by unique clinical, pathological, and molecular characteristics. Typically affecting the visceral soft tissues of children and adolescents, IMT exhibits a propensity for local recurrence while posing a minimal risk of distant metastasis. They are extremely rare in adults, constituting less than 1% of adult lung tumors. Our patient, a 63-year-old female, has an intricate medical background, encompassing chronic obstructive pulmonary disease (COPD), a previous history of smoking (35 pack-years, quit a year before admission), coronary artery disease, non-obstructive hypertrophic cardiomyopathy, and obstructive sleep apnea. Presenting with a diagnostic dilemma, she recently received treatment for non-small cell carcinoma with radiation therapy, which has evolved into a swiftly advancing case of IMT.
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Affiliation(s)
- Neil C Parker
- Internal Medicine, Southern Illinois University School of Medicine, Springfield, USA
| | - Prashanth Singanallur
- Pulmonary and Critical Care Medicine, Southern Illinois University School of Medicine, Springfield, USA
| | - Saif Faiek
- Pulmonology and Critical Care, Southern Illinois University School of Medicine, Springfield, USA
| | - John Gao
- Pathology, Southern Illinois University School of Medicine, Springfield, USA
| | - Peter White
- Pulmonology and Critical Care, Southern Illinois University School of Medicine, Springfield, USA
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19
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Vernemmen AIP, Samarska IV, Speel EJM, Riedl RG, Goudkade D, de Bruïne AP, Wouda S, van Marion AM, Verlinden IV, van Lijnschoten I, Friederich P, Winnepenninckx VJL, Zur Hausen A, Sciot RME, van den Hout MFCM. Abdominal inflammatory myofibroblastic tumour: Clinicopathological and molecular analysis of 20 cases, highlighting potential therapeutic targets. Histopathology 2024; 84:794-809. [PMID: 38155480 DOI: 10.1111/his.15122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/30/2023]
Abstract
AIMS Inflammatory myofibroblastic tumour (IMT) is a rare mesenchymal neoplasm of intermediate malignant potential, occurring at any age and at multiple sites. Epithelioid inflammatory myofibroblastic sarcoma (EIMS) is an aggressive subtype of IMT, typically involving the abdomen. Most IMTs harbour kinase gene fusions, especially involving ALK and ROS1, but 20-30% of IMTs show no detectable translocations. The aim of this study is to further delineate clinicopathological and molecular characteristics of abdominal IMT and discover potential new therapeutic targets. METHODS AND RESULTS In 20 IMTs, including four EIMS, RNA fusion analysis was performed, followed by multiplex DNA analysis if no ALK or ROS1 fusion was detected. Fourteen IMTs (70.0%) had an ALK translocation and the fusion partner was identified in 11, including a RRBP1::ALK fusion, not previously described in classical (non-EIMS) IMT. RANBP2::ALK fusion was demonstrated in all EIMS. One IMT had a ROS1 fusion. In all ALK/ROS1 translocation-negative IMTs mutations or fusions - as yet unreported in primary IMT - were found in genes related to the receptor tyrosine kinase (RTK)/PI3K/AKT pathway. Three of four patients with EIMS died of disease [mean survival 8 months (4-15 months)], whereas only one of 14 classical IMT patients succumbed to disease [mean follow-up time 52 months (2-204 months); P < 0.01]. CONCLUSION This study shows the wide clinical spectrum of abdominal IMTs and affirms the poor prognosis of EIMS, raising discussion about its status as IMT subtype. Furthermore, the newly detected alterations of the RTK/PI3K/AKT pathway expand the molecular landscape of IMTs and provide potential therapeutic targets.
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Affiliation(s)
- Astrid I P Vernemmen
- Department of Pathology, School for Oncology and Reproduction (GROW), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Iryna V Samarska
- Department of Pathology, School for Oncology and Reproduction (GROW), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Ernst-Jan M Speel
- Department of Pathology, School for Oncology and Reproduction (GROW), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Robert G Riedl
- Department of Pathology, Zuyderland Medical Center, Geleen, The Netherlands
| | - Danny Goudkade
- Department of Pathology, Zuyderland Medical Center, Geleen, The Netherlands
| | | | - Siep Wouda
- Department of Pathology, VieCuri Medical Center, Venlo, The Netherlands
| | | | - Ivana V Verlinden
- Department of Pathology, Laurentius Hospital, Roermond, The Netherlands
| | - Ineke van Lijnschoten
- Department of Pathology, PAMM Laboratory for Pathology and Medical Microbiology, Eindhoven, The Netherlands
| | - Pieter Friederich
- Department of Gastroenterology and Hepatology, Catharina Hospital, Eindhoven, The Netherlands
| | - Véronique J L Winnepenninckx
- Department of Pathology, School for Oncology and Reproduction (GROW), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Axel Zur Hausen
- Department of Pathology, School for Oncology and Reproduction (GROW), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Raf M E Sciot
- Department of Pathology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Mari F C M van den Hout
- Department of Pathology, School for Oncology and Reproduction (GROW), Maastricht University Medical Center, Maastricht, The Netherlands
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20
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Balaji K, Siddique SS, Khurana U, Goel G, Tandon A, Joshi D, Chaudhary N, Khurana AK, Goyal A. Cytohistological findings and diagnostic challenges in rare pediatric pulmonary mesenchymal malignancies: A report of two cases. Diagn Cytopathol 2024; 52:E88-E94. [PMID: 38235937 DOI: 10.1002/dc.25273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/19/2024]
Abstract
Pulmonary mesenchymal tumors are uncommon neoplasms and the data available on their clinical, cytohistomorphological, immunohistochemical, and molecular findings are limited, leading to difficulty in timely diagnosis and management. Case 1: A 12-year-old boy presented with a right endobronchial mass. Imprint smears from endobronchial biopsy revealed moderately pleomorphic spindle cell tumor arranged in fascicles and perivascular pattern with attached myxoid material showing occasional mitotic activity suggesting a cytological diagnosis of sarcoma. Biopsy also displayed similar morphology. Extensive immunohistochemistry (IHC) showed diffuse SMA, focal AE1/AE3, and diffuse ALK positivity along with a MIB/Ki67 index of 30%-40% leading to the diagnosis of inflammatory myofibroblastic tumor (IMT; Sarcoma grade). Case 2: A 8-year-old boy presented with a huge left-sided mass replacing the entire lung parenchyma and eroding adjoining ribs. Pleural fluid cytology revealed vague clusters of PAS-positive diastase-sensitive small atypical cells with associated inflammatory cells in the hemorrhagic background, suggesting a diagnosis of malignant small round blue cell tumor. Trucut biopsy from the mass showed spindled to round cells showing diffuse positivity with CD99 and BCL-2. Molecular studies with reverse transcription-PCR (RT-PCR) for SYT-SSX and EWS-FLI1 were negative for synovial sarcoma and Ewing's sarcoma, respectively. Given the clinical setting, PAS positivity, IHC, and molecular studies, the diagnosis of tumors of uncertain differentiation with the possibility of Ewing's sarcoma family of tumors (ESFT) with a translocation between EWS1 and other ETS-family members (ERG, FEV, ETV1, E1AF, etc.) was suggested.
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Affiliation(s)
| | | | - Ujjawal Khurana
- Department of Pathology and Lab Medicine, AIIMS Bhopal, Bhopal, India
| | - Garima Goel
- Department of Pathology and Lab Medicine, AIIMS Bhopal, Bhopal, India
| | - Ashwani Tandon
- Department of Pathology and Lab Medicine, AIIMS Bhopal, Bhopal, India
| | - Deepti Joshi
- Department of Pathology and Lab Medicine, AIIMS Bhopal, Bhopal, India
| | | | | | - Abhishek Goyal
- Department of Pulmonary Medicine, AIIMS Bhopal, Bhopal, India
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21
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Lim JJ, Chen EY, Schaub SK, Wagner MJ. Reclassification of a spindle cell sarcoma after identification of a TFG-ROS1 fusion: A case demonstrating the clinical benefit of next-generation sequencing in sarcoma. Mol Genet Genomic Med 2024; 12:e2423. [PMID: 38622850 PMCID: PMC11019117 DOI: 10.1002/mgg3.2423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 02/14/2024] [Accepted: 03/19/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Inflammatory myofibroblastic tumors (IMTs) are rare mesenchymal soft tissue sarcomas that often present diagnostic challenges due to their wide and varied morphology. A subset of IMTs have fusions involving ALK or ROS1. The role of next-generation sequencing (NGS) for classification of unselected sarcomas remains controversial. METHODS AND RESULTS We report a case of a metastatic sarcoma in a 34-year-old female originally diagnosed as an unclassified spindle cell sarcoma with myofibroblastic differentiation and later reclassified as IMT after NGS revealed a TFG-ROS1 rearrangement. Histologically, the neoplasm had spindle cell morphology with a lobulated to focally infiltrative growth pattern with scant inflammatory cell infiltrate. Immunohistochemistry demonstrated focal desmin and variable smooth muscle actin staining but was negative for SOX10, S100, and CD34. Fluorescence in situ hybridization was negative for USP6 or ALK gene rearrangements. NGS revealed a TFG-ROS1 rearrangement and the patient was treated with crizotinib with clinical benefit. CONCLUSIONS We discuss the role of NGS as well as its potential benefit in patients with unresectable, ALK-negative metastatic disease. Considering this case and previous literature, we support the use of NGS for patients requiring systemic treatment.
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Affiliation(s)
- John J. Lim
- Division of Medical OncologyUniversity of WashingtonSeattleWashingtonUSA
| | - Eleanor Y. Chen
- Department of Laboratory Medicine and PathologyUniversity of WashingtonSeattleWashingtonUSA
| | | | - Michael J. Wagner
- Division of Medical OncologyUniversity of WashingtonSeattleWashingtonUSA
- Clinical Research DivisionFred Hutchinson Cancer CenterSeattleWashingtonUSA
- Present address:
Center for Sarcoma and Bone OncologyDana Farber Cancer InstituteBostonMassachusettsUSA
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22
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Hattori T, Tanizawa Y, Shimoda T, Koseki Y, Furukawa K, Fujiya K, Aizawa D, Sugino T, Terashima M, Bando E. Gastric inflammatory myofibroblastic tumor: a case report. Surg Case Rep 2024; 10:62. [PMID: 38485843 PMCID: PMC10940569 DOI: 10.1186/s40792-024-01844-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/13/2024] [Indexed: 03/18/2024] Open
Abstract
BACKGROUND Inflammatory myofibroblastic tumor (IMT) of the stomach is an uncommon mesenchymal neoplasm. We present a case of gastric submucosal tumor (SMT) where the final diagnosis was IMT. CASE PRESENTATION A 69-year-old man presented with a 24-mm SMT on the posterior wall of the middle third of the stomach that was detected by screening upper gastrointestinal endoscopy. Abdominal contrast-enhanced computed tomography showed that the tumor was well-enhanced. Although endoscopic ultrasonography-guided biopsy was performed, the histological diagnosis was not confirmed preoperatively. Since the tumor was clinically suspected to be a gastrointestinal stromal tumor, we performed gastric wedge resection by laparoscopic-endoscopic cooperative surgery. Pathologically, proliferative spindle cells with a positive reaction for smooth muscle actin, negativity for c-kit, desmin, s-100, CD34, STAT-6, β-catenin and anaplastic lymphoma kinase 1 were identified. Hence, the tumor was finally diagnosed as an IMT originating from the stomach. CONCLUSIONS When an SMT of the stomach is identified, the possibility of gastric IMT should be considered.
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Affiliation(s)
- Taku Hattori
- Divisions of Gastric Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Yutaka Tanizawa
- Divisions of Gastric Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan.
| | - Tadakazu Shimoda
- Divisions of Pathology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Yusuke Koseki
- Divisions of Gastric Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Kenichiro Furukawa
- Divisions of Gastric Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Keiichi Fujiya
- Divisions of Gastric Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Daisuke Aizawa
- Divisions of Pathology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Takashi Sugino
- Divisions of Pathology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Masanori Terashima
- Divisions of Gastric Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
| | - Etsuro Bando
- Divisions of Gastric Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-Cho, Sunto-Gun, Shizuoka, 411-8777, Japan
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23
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Yuan H, Wang Z, Sun J, Chu J, Duan S, Wang M. A rare huge bladder inflammatory myofibroblastic tumor treated by en bloc resection with diode laser: a case report and literature review. Front Oncol 2024; 14:1327899. [PMID: 38529377 PMCID: PMC10961466 DOI: 10.3389/fonc.2024.1327899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 02/28/2024] [Indexed: 03/27/2024] Open
Abstract
Background Inflammatory myofibroblastic tumor (IMT) is a rare neoplasm with malignant potential. Bladder IMT is even rarer and mainly treated by surgical resection However, partial or radical cystectomy would affect the quality of life of patients due to major surgical trauma, and classical TURBT is hard to avoid intraoperative complications including obturator nerve reflex and bleeding etc. Therefore, the safe and effective better choice of surgical approaches become critical to bladder IMT. Case presentation A 42-year-old male patient was admitted to the department of urology with persistent painless gross hematuria for more than 10 days without the presentation of hypertension. Preoperative routine urine examination of red blood cells was 7738.9/HPF (normal range ≤ 3/HPF). CTU indicated a space occupying lesion (6.0 cm×5.0 cm) in the left posterior wall of the bladder with heterogeneous enhancement in the excretory phase. MRI also indicated bladder tumor with slightly equal SI on T1WI and mixed high SI on T2WI (6.0 cm×5.1cm×3.5cm) in the left posterior wall of the bladder. En bloc resection of bladder IMT with 1470 nm diode laser in combination of removing the enucleated tumor by the morcellator system was performed. Postoperative pathological examination revealed bladder IMT, with IHC positive for Ki-67 (15-20%), CK AE1/AE3, SMA, and Desmin of bladder IMT and negative for ALK of bladder IMT as well as FISH negative for ALK gene rearrangement. Second TUR with 1470 nm diode laser was performed within 6 weeks to reduce postoperative risk of recurrence due to highly malignant potential for the high expression of Ki-67 (15-20%) and negative ALK in IHC staining. The second postoperative pathology report showed chronic inflammation concomitant with edema of the bladder mucosa without bladder IMT, furthermore no tumor was observed in muscularis propria layer of bladder. No recurrence occurred during the period of 24-month follow-up. Conclusion En bloc resection of bladder IMT in combination of the following second transurethral resection with 1470 nm diode laser is a safe and effective surgical approach for the huge bladder IMT with highly malignant potential.
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Affiliation(s)
- Huisheng Yuan
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zilong Wang
- Department of Andrology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jiaxing Sun
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Junhao Chu
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Shishuai Duan
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Muwen Wang
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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Fukiage K, Fujita K, Toyoda S, Nishimoto M, Kikuchi T, Chikugo T, Yoshimura K, Esa A, Ito A, Uemura H. Inflammatory myofibroblastic tumor of the prostate. IJU Case Rep 2024; 7:141-143. [PMID: 38440704 PMCID: PMC10909128 DOI: 10.1002/iju5.12687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 12/17/2023] [Indexed: 03/06/2024] Open
Abstract
Introduction Inflammatory myofibroblastic tumors are borderline malignant soft tissue tumors primarily affecting the lungs and pelvic organs. This report presents a rare case of an inflammatory myofibroblastic tumor originating from the prostate gland in a young male. Case presentation A 20-year-old man developed gross hematuria and dysuria, revealing a prostatic mass. Pathological examination of a biopsy displayed spindle-shaped myofibroblast proliferation and an infiltrate of inflammatory cells, leading to a diagnosis of inflammatory myofibroblastic tumor. Following fertility preservation measures, the patient underwent a robot-assisted laparoscopic total prostatectomy with bilateral nerve sparing, resulting in a postoperative diagnosis of inflammatory myofibroblastic tumor. No recurrence was observed in subsequent imaging, and urinary continence was maintained. Conclusion Surgical resection appears effective in managing inflammatory myofibroblastic tumors of the prostate. This case underscores the importance of complete tumor resection due to the significant recurrence risk associated with inflammatory myofibroblastic tumors. Radical total prostatectomy emerges as a potential treatment strategy for prostate originating inflammatory myofibroblastic tumors.
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Affiliation(s)
- Ken Fukiage
- Department of UrologyKindai University Faculty of MedicineOsakasayamaJapan
| | - Kazutoshi Fujita
- Department of UrologyKindai University Faculty of MedicineOsakasayamaJapan
| | - Shingo Toyoda
- Department of UrologyKindai University Faculty of MedicineOsakasayamaJapan
| | | | - Takashi Kikuchi
- Department of UrologyKindai University Faculty of MedicineOsakasayamaJapan
| | - Takaaki Chikugo
- Department of UrologyKindai University Faculty of MedicineOsakasayamaJapan
| | - Kazuhiro Yoshimura
- Department of UrologyKindai University Faculty of MedicineOsakasayamaJapan
| | - Atsunobu Esa
- Department of UrologyKaizuka Municipal HospitalKaizukaJapan
| | - Akihiko Ito
- Department of UrologyKindai University Faculty of MedicineOsakasayamaJapan
| | - Hirotsugu Uemura
- Department of PathologyKinki University School of MedicineOsakasayamaJapan
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Li J, Liu J, Yao X, Yang J. A rare inflammatory myofibroblastic tumor appearing both inside and outside the heart. Eur J Med Res 2024; 29:132. [PMID: 38368344 PMCID: PMC10874007 DOI: 10.1186/s40001-024-01710-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 02/02/2024] [Indexed: 02/19/2024] Open
Abstract
BACKGROUND Inflammatory myofibroblastic tumor (IMT) is an uncommon cardiac tumor that primarily affects infants, children, and young adults. While complete surgical resection generally leads to a favorable prognosis, accurate diagnostic tests remain limited. CASE PRESENTATION We describe the case of a 26-year-old female who had a dual tumor inside and outside the heart and was misdiagnosed by echocardiography and MRI. We also review 71 cases of cardiac IMTs from the literature regarding their epidemiology, clinical presentation, and outcome. CONCLUSION Early detection of this rare disorder is essential for optimal surgical management.
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Affiliation(s)
- Jiarong Li
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Middle Renmin Road 139, Changsha, 410011, China
| | - Jijia Liu
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Middle Renmin Road 139, Changsha, 410011, China
| | - Xingwang Yao
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital, Central South University, Changsha, 410011, China.
| | - Jinfu Yang
- Department of Cardiovascular Surgery, The Second Xiangya Hospital, Central South University, Middle Renmin Road 139, Changsha, 410011, China.
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26
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Luo FR, Lin YF, Lin JL, Liang XS, Xiao HJ, Huang RG. Inflammatory myofibroblastic tumor of the heart in an older woman with paroxysmal atrial fibrillation: a case report and review of the literature. J Cardiothorac Surg 2024; 19:47. [PMID: 38310322 PMCID: PMC10838421 DOI: 10.1186/s13019-024-02525-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 01/28/2024] [Indexed: 02/05/2024] Open
Abstract
Inflammatory myofibroblastic tumors (IMTs) of the heart are rarely observed in the eldly. We report a case involving an elderly woman with an IMT situated on the right atrial wall. The tumor was fully excised. The patient had a smooth recovery post-surgery and remained free of recurrence for three years.
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Affiliation(s)
- Fu-Rong Luo
- Department of Radiology, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
| | - Yi-Fen Lin
- Department of Radiology, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
| | - Jing-Lian Lin
- Department of Radiology, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
| | - Xiao-Shan Liang
- Department of Radiology, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
| | - Hui-Jun Xiao
- Department of Radiology, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China.
| | - Rui-Gang Huang
- Department of Radiology, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China.
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27
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Vounckx M, Jansen YJL, Fadaei S, Geers C, De Pauw V, Smets D. Unraveling the spectrum of inflammatory myofibroblastic tumors in the lung: A comprehensive case series highlighting endobronchial, pleural, and lung parenchymal tumors. JTCVS OPEN 2024; 17:297-305. [PMID: 38420532 PMCID: PMC10897672 DOI: 10.1016/j.xjon.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/14/2023] [Accepted: 12/04/2023] [Indexed: 03/02/2024]
Abstract
Objectives Diverse cases of inflammatory myofibroblastic tumors (IMTs) in the lung (pleural, endobronchial, and parenchymal) are presented while discussing the (preoperative) diagnostic challenges and treatment modalities. Other objectives include emphasizing the significance of gene rearrangements and highlighting the multidisciplinary approach in addressing IMTs. Methods Four cases of IMT in the lung are presented, including a young adolescent girl with an ETV6-neurotrophic tyrosine receptor kinase 3 (NTRK3) gene rearrangement, a 5-year-old boy with challenging preoperative diagnosis, and 2 middle-aged women with respectively pleural and endobronchial tumors with one peribronchial relapse. Results The cases demonstrate the diverse clinical presentations and diagnostic complexities associated with IMT in the lung. Surgical resection remains the primary treatment modality, with complete resection leading to a cure in most patients. Unfortunately, aggressive relapse can occur, as in our last case of an endobronchial tumor. Frozen section may confirm the presence of malignant cells perioperatively and impact further treatment. The presence of gene rearrangements, such as ETV6-NTRK3, suggests potential therapeutic implications. Conclusions Early detection and complete surgical removal of IMT are crucial for effective treatment. Identifying gene rearrangements such as ETV6-NTRK3 holds promise for targeted therapies. Diagnostic challenges, including the controversy of biopsies and preoperative evaluations, underscore the importance of a multidisciplinary approach. Anatomopathological recognition of IMT stays demanding. Close surveillance is necessary due to potential relapse, whereas frozen section perioperatively can help further treatment. This case series emphasizes the diagnostic challenges and therapeutic considerations for IMT in the lung.
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Affiliation(s)
- Manon Vounckx
- Department of Thoracic Surgery, UZ Brussel, Jette, Belgium
| | - Yanina J L Jansen
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Lung Transplant Unit, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
- Department of Thoracic Surgery, University Hospitals Leuven, Leuven, Belgium
| | | | - Caroline Geers
- Department of Anatomopathology, UZ Brussel, Jette, Belgium
| | | | - Dirk Smets
- Department of Thoracic Surgery, UZ Brussel, Jette, Belgium
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28
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Takayama T, Nakame A, Suzuki M, Asano H, Jin L. Inflammatory Myofibroblastic Tumor of the Anus: A Case Report. J Anus Rectum Colon 2024; 8:39-42. [PMID: 38313745 PMCID: PMC10831981 DOI: 10.23922/jarc.2022-043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 11/08/2023] [Indexed: 02/06/2024] Open
Abstract
Inflammatory myofibroblastic tumors (IMTs) are neoplastic lesions characterized by the proliferation of spindle cells with myofibroblastic features and lymphocyte infiltration. Primary lesions can develop in several locations but rarely arise in the colon as described herein. The present case was that of a 69-year-old woman who visited our hospital with complaints of bloody bowel discharge and a prolapsed mass from the anus. A 20-mm tumor was identified on visual and digital examination. Lower gastrointestinal endoscopy revealed a pedunculated, elevated lesion above the dentate line, which showed contrast enhancement on abdominal computed tomography. The patient was preoperatively diagnosed with an anal polyp, which was resected transanally. During the procedure, a mobile tumor coated by anal epithelium was observed at the 11 o'clock position above the dentate line. Deeper parts of the tumor were contiguous with the internal anal sphincter (IAS) muscle. Suspecting a neoplastic lesion, we resected the mass en bloc with part of the IAS. Tumor histopathology after surgery led to a final diagnosis of an IMT of the anus. IMT is difficult to diagnose preoperatively. No adjuvant therapy has been formally established; thus, an adequate surgical margin and close monitoring are essential.
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Affiliation(s)
| | - Ayako Nakame
- Department of General Surgery, Saitama Medical University, Saitama, Japan
| | - Masaomi Suzuki
- Department of General Surgery, Saitama Medical University, Saitama, Japan
| | - Hiroshi Asano
- Department of General Surgery, Saitama Medical University, Saitama, Japan
| | - Ling Jin
- Department of Pathology, Saitama Medical University, Saitama, Japan
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29
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Yamashita T, Matsubayashi Y, Mochizuki T. Traumatic tumor hemorrhage of inflammatory myofibroblastic tumor of the lung. Respir Med Case Rep 2024; 47:101981. [PMID: 38288137 PMCID: PMC10823134 DOI: 10.1016/j.rmcr.2024.101981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/31/2023] [Accepted: 01/08/2024] [Indexed: 01/31/2024] Open
Abstract
A 23-year-old female with a history of idiopathic epilepsy was found to have a right chest cavity shadow in a school health checkup 5 years before. CT revealed a thin-walled cavity lesion in the right middle lobe containing a ball-like mass, showing air crescent sign. After falling due to a seizure, she was transported by ambulance and admitted. CT revealed diffuse ground-glass opacities throughout the right lung field. Bronchoscopy revealed bloody bronchial alveolar lavage fluid. Due to the tumor hemorrhage, an elective simple right middle lobe resection was performed without complications. The initial immunohistochemical staining was negative for ALK using ALK1 clone; however, subsequent staining of ALK by D5F3 and 5A4 clone was positive. Immunostaining findings led to a diagnosis of inflammatory myofibroblastic tumor. The patient remains under regular observation and has experienced no recurrence over the 6-year postoperative period. This case contains two different points: the first is that a cavity lesion of inflammatory myofibroblastic tumor may cause traumatic bleeding and should be treated with caution; the second is that attention should be paid to differences in stainability among clones when diagnosing inflammatory myofibroblastic tumor.
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Affiliation(s)
- Takashi Yamashita
- Department of Thoracic Surgery, Iwata City Hospital, 512-3, Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Yuta Matsubayashi
- Department of Thoracic Surgery, Iwata City Hospital, 512-3, Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Takahiro Mochizuki
- Department of Thoracic Surgery, Iwata City Hospital, 512-3, Ohkubo, Iwata, Shizuoka, 438-8550, Japan
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30
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Rerkpichaisuth V, Hung YP. Mesenchymal tumours of the pleura: review and update. Histopathology 2024; 84:163-182. [PMID: 37691389 DOI: 10.1111/his.15035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/10/2023] [Accepted: 08/14/2023] [Indexed: 09/12/2023]
Abstract
Primary mesenchymal tumours of the pleura are uncommon and can be diagnostically challenging due to their overlapping histopathologic and immunophenotypic features. Herein we discuss selected mesenchymal tumours of the pleura, including solitary fibrous tumour, calcifying fibrous tumour, desmoid fibromatosis, synovial sarcoma, schwannoma, malignant peripheral nerve sheath tumour, inflammatory myofibroblastic tumour, follicular dendritic cell sarcoma, epithelioid hemangioendothelioma, and desmoplastic small round cell tumour. We review their clinicopathologic characteristics, along with an update on the relevant immunohistochemical and molecular features.
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Affiliation(s)
- Vilasinee Rerkpichaisuth
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Yin P Hung
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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31
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Yuan C, Fan J, Xu L. Inflammatory myofibroblastic tumor of the upper arm: A case report. Medicine (Baltimore) 2023; 102:e36558. [PMID: 38115338 PMCID: PMC10727551 DOI: 10.1097/md.0000000000036558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 11/14/2023] [Accepted: 11/20/2023] [Indexed: 12/21/2023] Open
Abstract
RATIONALE Inflammatory myofibroblastic tumor (IMT) is an uncommon benign myofibroblastic tumor that usually occurs in the lung, mediastinum, abdomen and vulvovaginal region. IMT of the upper arm is exceedingly rare with unknown etiology. Pathology plays a major role in the diagnosis of IMT, and radiological characteristics of the condition are crucial for differential diagnosis. PATIENT CONCERNS A 62-year-old woman was admitted to our hospital for a complaint of a mass in her left upper limb with progressive numbness in the extremity. Ultrasound examination of the brachial artery (BA) revealed a hypoechoic mass with well-defined borders and a substantial blood flow, and the mass was also shown to be greatly enhanced on computed tomography (CT) and magnetic resonance imaging (MRI). DIAGNOSIS The subsequent histopathological and immunohistochemical studies led to the diagnosis of IMT. INTERVENTION The patient was referred for surgery. The soft tissue tumor resection, left median nerve release operation, brachial artery vascular grafting, and arterial anastomosis were performed. OUTCOME Favorable outcome was observed. The patient recovered well from the procedure and did not experience any further complications or tumor recurrence. LESSONS In this report, we describe a case of IMT of the upper arm with BA involvement. The case expands the differential diagnosis of limb neoplasm and broadens the understanding of its ultrasonic and radiological imaging features. It also serves as a further example of an uncommon region distinct from conventional IMT. Further studies on the etiology and therapeutic strategies are needed.
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Affiliation(s)
- Caidi Yuan
- Department of Ultrasound, Shaoxing Second Hospital, Shaoxing, Zhejiang, China
- Department of Clinical Medicine, School of Medicine, Shaoxing University, Shaoxing, Zhejiang, China
| | - Jie Fan
- Department of Pathology, Huashan Hospital, Fudan University, Shanghai, China
| | - Lingjia Xu
- Department of Clinical Medicine, School of Medicine, Shaoxing University, Shaoxing, Zhejiang, China
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32
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Yamada H, Funasaka K, Nakagawa M, Hirayama Y, Horiguchi N, Nagasaka M, Nakagawa Y, Kuzuya T, Hashimoto S, Miyahara R, Shibata T, Tachi Y, Tsukamoto T, Hirooka Y. Large Inflammatory Myofibroblastic Tumor of the Esophagus: A Case Report and Literature Review. Intern Med 2023; 62:3473-3477. [PMID: 37081675 PMCID: PMC10749801 DOI: 10.2169/internalmedicine.0987-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 02/27/2023] [Indexed: 04/22/2023] Open
Abstract
Inflammatory myofibroblastic tumor (IMT) is a rare tumor composed of myofibroblasts with inflammatory blood cell infiltration. It commonly occurs in the lungs and rarely in the esophagus. We herein report a valuable case of IMT originating in the esophagus. A 60-year-old Japanese woman with dysphagia had a large subepithelial lesion in the cervical esophagus, which was 15 cm in length. Surgical resection was performed to confirm the pathological diagnosis and improve the symptoms. The postoperative diagnosis was IMT composed of multiple nodules. There was no recurrence or metastasis within one year after surgery.
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Affiliation(s)
- Hyuga Yamada
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Kohei Funasaka
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Mitsuru Nakagawa
- Department of Diagnostic Pathology, Fujita Health University, Japan
| | - Yutaka Hirayama
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Noriyuki Horiguchi
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Mitsuo Nagasaka
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Yoshiyuki Nakagawa
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Teiji Kuzuya
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Senju Hashimoto
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Ryoji Miyahara
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Tomoyuki Shibata
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
| | - Yoshihiko Tachi
- Department of Internal Medicine (Gastroenterology), Fujita Health University Okazaki Medical Center, Japan
| | | | - Yoshiki Hirooka
- Department of Gastroenterology and Hepatology, Fujita Health University, Japan
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33
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Foster CR, Strauss M, Hornick JL, Habeeb O. Desmoid Fibromatosis With TP53 Mutation and Striking Nuclear Pleomorphism. Int J Surg Pathol 2023; 31:1565-1571. [PMID: 36908221 DOI: 10.1177/10668969231160255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Desmoid fibromatosis is a myofibroblastic neoplasm of intermediate biologic potential, which has a strong predilection for local recurrence but does not metastasize. Arranged in long, sweeping fascicles with infiltrative borders, desmoid fibromatosis typically consists of uniform, bland myofibroblastic spindle cells that harbor mutation of CTNNB1 (or less often APC). In this report, we present a remarkable case of desmoid fibromatosis associated with striking nuclear pleomorphism. We hypothesize that this striking pleomorphism is due to a germline TP53 mutation, a finding first suspected due to strong and diffuse p53 staining by immunohistochemistry and subsequently confirmed by molecular testing. The combination of the pleomorphism and TP53 mutation in desmoid fibromatosis represents a novel finding unreported in the literature.
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Affiliation(s)
- Charlotte R Foster
- Histopathology Department, LabPlus, Auckland City Hospital, Auckland, New Zealand
| | - Magreet Strauss
- Histopathology Department, LabPlus, Auckland City Hospital, Auckland, New Zealand
| | | | - Omar Habeeb
- Histopathology Department, Middlemore Hospital, Auckland, New Zealand
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34
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Wang QA, Chen HW, Wu RC, Wu CE. Update of Diagnosis and Targeted Therapy for ALK + Inflammation Myofibroblastic Tumor. Curr Treat Options Oncol 2023; 24:1683-1702. [PMID: 37938503 PMCID: PMC10781869 DOI: 10.1007/s11864-023-01144-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2023] [Indexed: 11/09/2023]
Abstract
OPINION STATEMENT: Inflammatory myofibroblastic tumor (IMT), characterized by intermediate malignancy and a propensity for recurrence, has presented a formidable clinical challenge in diagnosis and treatment. Its pathological characteristics may resemble other neoplasms or reactive lesions, and the treatment was limited, taking chemotherapies as the only option for those inoperable. However, discovering anaplastic lymphoma kinase (ALK) protein expression in approximately 50% of IMT cases has shed light on a new diagnostic approach and application of targeted therapies. With the previous success of combating ALK+ non-small-cell lung cancers with ALK tyrosine kinase inhibitors (TKIs), crizotinib, a first-generation ALK-TKI, was officially approved by the U.S. Food and Drug Administration in 2020, to treat unresectable ALK+ IMT. After the approval of crizotinib, other ALK-TKIs, such as ceritinib, alectinib, brigatinib, and lorlatinib, have proven their efficacy on ALK+ IMT with sporadic case reports. The sequential treatments of targeted therapies in may provide the insight into the choice of ALK-TKIs in different lines of treatment for unresectable ALK+ IMT.
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Affiliation(s)
- Qi-An Wang
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Huan-Wu Chen
- Division of Emergency and Critical Care Radiology, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Chang Gung University, Linkou, Taiwan
| | - Ren-Chin Wu
- Department of Pathology, Chang Gung Memorial Hospital at Linkou and Chang Gung University, Taoyuan, Taiwan
| | - Chiao-En Wu
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Chang Gung University College of Medicine, Taoyuan, Taiwan.
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35
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Wangsiricharoen S, Gjeorgjievski SG, Bahrami A, Torres-Mora J, Zou YS, Michal M, Charville GW, Gross JM. Non-cutaneous syncytial myoepitheliomas are identical to cutaneous counterparts: a clinicopathologic study of 24 tumors occurring at diverse locations. Virchows Arch 2023; 483:665-675. [PMID: 37548750 DOI: 10.1007/s00428-023-03609-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/13/2023] [Accepted: 07/21/2023] [Indexed: 08/08/2023]
Abstract
AIMS Cutaneous syncytial myoepithelioma (CSM) is a rare myoepithelioma variant of skin, characterized by intradermal syncytial growth of spindle cells with a distinct immunophenotype of EMA and S100 positivity and infrequent keratin expression. While CSM was first described as a cutaneous tumor, singular non-cutaneous cases have since been reported in bone. We aimed to investigate the clinicopathological features of this variant across all anatomic sites through a large multi-institutional study. METHODS AND RESULTS We complied a total of 24 myoepitheliomas with syncytial growth from our files. The tumors occurred in 12 male and 12 female patients (M:F = 1:1), with a median age of 31 years (range, 9-69 years). While the majority of tumors (75%, n = 18) occurred in skin, a significant subset (25%, n = 6) arose in non-cutaneous sites, including bone (n = 3), bronchus/trachea (n = 2), and interosseous membrane of tibia/fibula (n = 1). Tumor size ranged from 0.4 to 5.9 cm. Clinical follow-up (7 patients; range 14-202 months; median 56.5 months) showed a single local recurrence 8 years after incomplete skin excision but no metastases; all patients were alive at the time of last follow-up without evidence of disease. Histologically, all tumors were pink at low-power and characterized by a syncytial growth of bland ovoid, spindled, or histiocytoid cells with eosinophilic cytoplasm and prominent perivascular lymphoplasmacytic inflammation. One-third displayed adipocytic metaplasia (8/24). Rare cytologic atypia was seen but was not associated with increased mitotic activity. All tumors expressed S100, SMA, and/or EMA. Keratin expression was absent in most cases. Molecular analysis was performed in 16 cases, all showing EWSR1-rearrangments. In total, 15/15 (100%) harbored an EWSR1::PBX3 fusion, whereas 1 case EWSR1 FISH was the only molecular study performed. CONCLUSION Syncytial myoepithelioma is a rare but recognizable morphologic variant of myoepithelioma which may have a predilection for skin but also occurs in diverse non-cutaneous sites. Our series provides evidence supporting a reappraisal of the term "cutaneous syncytial myoepithelioma," as 25% of patients in our series presented with non-cutaneous tumors; thus, we propose the term "syncytial myoepithelioma" to aid pathologist recognition and avoidance of potentially confusing terminology when referring to non-cutaneous examples. The behavior of syncytial myoepithelioma, whether it arises in cutaneous or non-cutaneous sites, is indolent and perhaps benign with a small capacity for local recurrence.
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Affiliation(s)
| | | | - Armita Bahrami
- Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | | | - Ying S Zou
- Department of Pathology, Johns Hopkins University School of Medicine, 401 N Broadway, Weinberg Building 2245, Baltimore, MD, 21231, USA
| | - Michael Michal
- Department of Pathology, Faculty of Medicine in Plzen, Charles University, Pilsen, Czech Republic
- Bioptical Laboratory, Ltd., Pilsen, Czech Republic
| | - Gregory W Charville
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - John M Gross
- Department of Pathology, Johns Hopkins University School of Medicine, 401 N Broadway, Weinberg Building 2245, Baltimore, MD, 21231, USA.
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36
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Brenner C, Sanders C, Vokuhl C. [Receptor tyrosine kinase- fusions in paediatric spindle cell tumors]. PATHOLOGIE (HEIDELBERG, GERMANY) 2023; 44:357-365. [PMID: 37819532 DOI: 10.1007/s00292-023-01228-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/17/2023] [Indexed: 10/13/2023]
Abstract
Pediatric spindle cell tumors are rare and often difficult to diagnose due to a similar morphology and a non-specific immunohistochemical profile. Genetic characterization of these lesions has been constantly improving, which has led to the identification of new subgroups that were partly included in the WHO classification. Receptor tyrosine kinase fusions play a special role in these tumors and their verification has diagnostic relevance and can be an option for target-oriented therapies. In the case of pediatric spindle cell tumors, genetic fusions form especially with NTRK1‑3, ALK, RET, and ROS1. Overall, pediatric tumors with receptor tyrosine kinase fusions are predominantly low-grade tumors, which are often subdivided into the group of intermediate-malign tumors.
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Affiliation(s)
- Christiane Brenner
- Sektion Kinderpathologie, Institut für Pathologie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland.
| | - Christine Sanders
- Institut für Pathologie, Universitätsklinikum Bonn, Bonn, Deutschland
| | - Christian Vokuhl
- Sektion Kinderpathologie, Institut für Pathologie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland
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Kimura N, Hiraki M, Akashi M, Miyahara K, Imamura M, Furukawa S, Samejima R. A rare case of inflammatory myofibroblast tumor of the stomach successfully treated by inverted laparoscopic and endoscopic cooperative surgery. Surg Case Rep 2023; 9:189. [PMID: 37902858 PMCID: PMC10616023 DOI: 10.1186/s40792-023-01767-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/14/2023] [Indexed: 11/01/2023] Open
Abstract
BACKGROUND An Inflammatory myofibroblastic tumor (IMT) is a rare intermediate malignancy characterized by myofibroblast proliferation and inflammatory cell infiltration. Various organs are the primary sites of origin. However, primary tumors originating in the stomach tend to be extremely rare, making the diagnosis difficult. Herein, we present a case of IMT originating in the stomach that was effectively managed using inverted laparoscopic endoscopic cooperative surgery (LECS). CASE PRESENTATION A 47-year-old male who was admitted to the hospital because of a submucosal tumor that was discovered during upper gastrointestinal endoscopy. The diameter of the tumor was approximately 20 mm. A KIT-negative gastrointestinal stromal tumor was suspected based on the biopsy findings. Therefore, partial resection of the stomach was performed using inverted laparoscopic and endoscopic cooperative surgery. Histopathological examination revealed collagen fiber proliferation from the submucosal layer to the muscular layer, accompanied by infiltration of spindle-shaped cells, lymphocytes, and numerous inflammatory cells. Immunohistochemistry results were positive for SMA and negative for CD34, desmin, and c-kit. IgG4-positive cells were observed with an IgG4/IgG ratio > 50%, and specific nuclei were positive for ALK. Therefore, IMT was diagnosed. This condition may be difficult to diagnose both before and after surgery because of its rarity and submucosal tumor-like morphology. CONCLUSION When a submucosal tumor originating in the stomach is observed, IMT should be considered. Partial resection of the stomach with LECS and immunohistochemical diagnosis may be useful.
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Affiliation(s)
- Naoya Kimura
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Masatsugu Hiraki
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan.
| | - Michiaki Akashi
- Department of Pathology, Japan Red Cross Society Karatsu Red Cross Hospital, Karatsu, Saga, Japan
| | - Koichi Miyahara
- Department of Internal Medicine, Japan Red Cross Society Karatsu Red Cross Hospital, Karatsu, Saga, Japan
| | - Minori Imamura
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Shunsuke Furukawa
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Ryuichiro Samejima
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
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Geng ZY, Li ZH, Li SH, Wu B, Sheng YL, Yuan P, Li F, Qi Y. Case report: Uniportal video-assisted thoracoscopic sleeve lobectomy in a 6-year-old patient with inflammatory myofibroblastic tumor (IMT). Front Pediatr 2023; 11:1285181. [PMID: 37915983 PMCID: PMC10616251 DOI: 10.3389/fped.2023.1285181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/03/2023] [Indexed: 11/03/2023] Open
Abstract
Inflammatory myofibroblastic tumor (IMT) is a rare neoplasm that can occur in various organs, including the lung. Surgical resection is usually the preferred treatment for localized IMT.A 6-year-old female was admitted to our hospital with complaints of "coughing and vomiting for 6 days". A chest CT scan revealed occlusion of the left main bronchus, segmental atelectasis of the left lower lung, and cystic low-density shadows along the bronchial pathway. Subsequent fiberoptic bronchoscopy confirmed the diagnosis of IMT through pathological biopsy. After excluding surgical contraindications, the patient underwent uniportal video-assisted thoracoscopic sleeve lobectomy for treatment. The patient had an uneventful postoperative course and was discharged four days after surgery. After one month, the patient received a follow-up examination and reported no significant discomfort. A chest CT scan revealed no postoperative complications.Our experience suggests that uniportal video-assisted thoracoscopic surgery may be a safe and effective approach for the treatment of pediatric patients with IMT requiring complex surgical procedures such as sleeve lobectomy and tracheoplasty.
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Affiliation(s)
| | | | | | | | | | | | | | - Yu Qi
- Department of Thoracic Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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39
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Asbah M, Shrateh ON, Musleh A, Abbadi K, Amro W, Shaltaf A. Huge mesenteric inflammatory myofibroblastic tumor as a rare cause of intussusception with recurrence after 10 months: Case report and literature review. Int J Surg Case Rep 2023; 111:108871. [PMID: 37757735 PMCID: PMC10539857 DOI: 10.1016/j.ijscr.2023.108871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 09/29/2023] Open
Abstract
INTRODUCTION AND IMPORTANCE Inflammatory myofibroblastic tumor (IMT) is an infrequent, generally non-cancerous mesenchymal growth. IMT can affect individuals across various age groups, with a higher prevalence in children and adolescents. While it can emerge in any bodily region, it has a tendency to develop more often in the lungs and mesentery. IMT occurrence in the small bowel is exceptionally uncommon. It's a rare cause of intussusception and has unpredictable recurrence rate. CASE PRESENTATION This report highlights a unique clinical presentation involving a mesenteric IMT, which presented as small intestine intussusception in a 2-year-old child. Additionally, the patient was found to have an asymptomatic mass in the right upper quadrant, later identified as a recurrent IMT 10 months after surgical intervention for intussusception caused by the same tumor. CLINICAL DISCUSSION IMTs originate from mesenchymal tissues and encompass a blend of fibroinflammatory conditions. They exhibit a diverse combination of inflammatory and spindle cells. Diagnosing IMTs prior to surgery is intricate, as they can mimic malignant growths. Histopathology following surgery is usually needed for confirmation. Complete removal with a clear margin is the favored treatment approach. CONCLUSION Intestinal IMT is an infrequent and often overlooked condition, but it should be taken into account when diagnosing small bowel intussusception. The best chance of preventing recurrence in cases of intestinal IMT is through complete surgical removal with a negative margin. Nonetheless, the most effective approach for managing local recurrence and metastasis is still uncertain and necessitates ongoing long-term observation.
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Affiliation(s)
- Malvina Asbah
- Department of General Surgery, Palestinian Medical Complex (PMC), Ramallah, Palestine
| | - Oadi N Shrateh
- Faculty of Medicine, Al-Quds University, Jerusalem, Palestine
| | - Asil Musleh
- Department of General Surgery, Palestinian Medical Complex (PMC), Ramallah, Palestine
| | - Khaled Abbadi
- Department of General Surgery, Palestinian Medical Complex (PMC), Ramallah, Palestine.
| | - Wael Amro
- Department of Pediatric Surgery, Palestinian Medical Complex (PMC), Ramallah, Palestine
| | - Ahmad Shaltaf
- Department of Pediatric Surgery, Palestinian Medical Complex (PMC), Ramallah, Palestine
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Jot K, Nayyar V, Surya V, Mishra D, Sowmya SV, Augustine D, Indu M, Haragannavar VC. A multicentric case study of fibroblastic and myofibroblastic oral spindle cell lesions. J Oral Maxillofac Pathol 2023; 27:629-641. [PMID: 38304501 PMCID: PMC10829460 DOI: 10.4103/jomfp.jomfp_282_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 02/03/2024] Open
Abstract
Context Spindle cell lesions comprise a vast plethora of benign and malignant lesions with similar clinical and radiographic features. Their overlapping histopathologic features ensure a diagnostic dilemma. Aim The current multicentric study aims to delineate fibroblastic and myofibroblastic oral spindle cell lesions based on cytomorphology and comprehensive immunohistochemical analysis. Settings and Design The experimental study was conducted at MS Ramaiah University of Applied Sciences, Bangalore, and All India Institute of Applied Sciences, Delhi. Methods and Material A comprehensive histological scoring criteria and panel of immunohistochemical makers (STAT6, CD31, CD34, S100, SMA, vimentin, pan-CK, HHF-35, Ki67, ALK, desmin, HMB-45, SATB2, ERG, EMA and CD99) were employed concurrently for the first time for fibroblastic and myofibroblastic oral spindle cell lesions. The data obtained was tabulated and studied. Statistical Analysis Used NA. Results: Using cytological scoring criteria and panel of immunohistochemical makers, the cases analysed and characterized were desmoplastic fibroma, fibrosarcoma, leiomyosarcoma, nodular fasciitis, neurofibroma and epithelioid inflammatory myofibroblastic sarcoma (EIMS). Conclusions The diagnostic strategies need to be upgraded for the diagnosis of spindle cell lesions. Emphasis must be placed on cytomorphology, an immunohistochemistry (IHC) panel of markers is imperative for the accurate diagnosis of fibroblastic and myofibroblastic oral spindle cell lesions.
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Affiliation(s)
- Kiran Jot
- Department of Oral Pathology and Microbiology, Fifth Floor, Centre for Dental Education and Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Vivek Nayyar
- Department of Oral Pathology and Microbiology, Fifth Floor, Centre for Dental Education and Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Varun Surya
- Department of Oral Pathology and Microbiology, Fifth Floor, Centre for Dental Education and Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Deepika Mishra
- Department of Oral Pathology and Microbiology, Fifth Floor, Centre for Dental Education and Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - SV Sowmya
- Department of Oral Pathology and Microbiology, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, MSR Nagar, Bengaluru, Karnataka, India
| | - Dominic Augustine
- Department of Oral Pathology and Microbiology, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, MSR Nagar, Bengaluru, Karnataka, India
| | - M Indu
- Department of Oral Pathology, Government Dental College, Kottayam, Kerala, India
| | - Vanishri C. Haragannavar
- Department of Oral Pathology and Microbiology, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, MSR Nagar, Bengaluru, Karnataka, India
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41
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Dou W, Guan Y, Liu T, Zheng H, Feng S, Wu Y, Wang X, Liu Z. Epithelioid inflammatory myofibroblastic sarcoma: a case report and brief literature review. Front Oncol 2023; 13:1212529. [PMID: 37841422 PMCID: PMC10571703 DOI: 10.3389/fonc.2023.1212529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 09/01/2023] [Indexed: 10/17/2023] Open
Abstract
Epithelioid inflammatory myofibroblastic sarcoma (EIMS) is a rare variant of the inflammatory myofibroblastic tumor, characterized by more aggressive clinical course and nuclear membrane staining of anaplastic lymphoma kinase (ALK) with ALK rearrangement. An elderly male came to the clinic because of an accidental abdominal mass. Abdominal and pelvic enhanced CT revealed a tumor apparently orginated from mesenchymal tissue. Subsequently, the abdominal mass and multiple organ resection was performed, and the mass was pathologically confirmed as EIMS. The patient developed Clavien-Dindo Grade III postoperative complications and was discharged after his condition improved. He received doxorubicin monotherapy after operation, but only one cycle was administered due to severe vomiting. The follow-up of 5 months after operation showed no evidence of recurrence. Given the rarity of EIMS, and ALk inhibitors have a long and robust effect on patients with ALK gene tumors, it is very important for clinicians to be familiar with the clinicopathological features of EIMS, which will contribute to the accurate diagnosis of EIMS and reduce misdiagnosis.
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Affiliation(s)
| | | | | | | | | | | | - Xin Wang
- Department of General Surgery, Peking University First Hospital, Peking University, Beijing, China
| | - Zhanbing Liu
- Department of General Surgery, Peking University First Hospital, Peking University, Beijing, China
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42
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Sivesind TE, Anderson A, Small JM, Opperman D. Inflammatory Myofibroblastic Tumor of the Larynx: Report of a Case. J Voice 2023; 37:799.e17-799.e19. [PMID: 34162497 DOI: 10.1016/j.jvoice.2021.04.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 12/23/2022]
Abstract
PURPOSE Inflammatory myofibroblastic tumor (IMT) is a rare tumor composed of mesenchymal myofibroblastic spindle cells enveloped by an inflammatory infiltrate. Historically, this tumor sparked debate regarding whether it was a true malignancy with metastatic potential or merely a locally destructive physiologic inflammatory response. Few reports of IMT exist in the recent literature, with the majority of cases occurring in the pediatric population and favoring the lungs. Here we present an exceedingly rare case of IMT involving the larynx of a 22-year-old female. RESULTS A hemorrhagic and solid mass of the right true membranous vocal fold was excised and sent for histopathological assessment. Features of the surgical specimens were diagnostic for IMT. Intralesional steroid therapy was selected for additional treatment. Panendoscopy facilitated surveillance for any additional or recurrent lesions, of which there were none. At 11 months post-excision, follow-up MRI revealed symmetric vocal cords without evidence of any masses. CONCLUSIONS Although rare, laryngeal IMT should be considered in any patient presenting with hoarseness due to a vocal fold mass. Based on the successful treatment of our patient, we suggest that our approach of surgical excision followed by intralesional corticosteroid injection may be an efficacious treatment approach for this rare tumor. However, more research is warranted to elucidate the most effective, safe, and cost-effective treatment approach.
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Affiliation(s)
- Torunn E Sivesind
- University of Colorado School of Medicine, Department of Dermatology, Aurora, CO
| | - Austen Anderson
- Department of Pathology. For Opperman: Medical Director, Colorado Voice Clinic, Rocky Vista University, College of Osteopathic Medicine, Parker, CO
| | - James M Small
- Department of Pathology. For Opperman: Medical Director, Colorado Voice Clinic, Rocky Vista University, College of Osteopathic Medicine, Parker, CO
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Chandramouli R, Sowmya YS, Raghava Ks A, Gochhait D, Jagadesan P. Inflammatory Myofibroblastic Tumor of the Testis in a Patient With Cecal Carcinoma. Cureus 2023; 15:e44573. [PMID: 37662511 PMCID: PMC10474877 DOI: 10.7759/cureus.44573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2023] [Indexed: 09/05/2023] Open
Abstract
Inflammatory myofibroblastic tumors (IMTs) are uncommon tumors that can be classified among fibroinflammatory disorders. IMTs are diagnosed after excluding all other entities, which can be considered differential diagnoses of IMTs. Microscopic examination of IMTs shows multiple myofibroblastic spindle cells, which are surrounded by inflammation. IMTs have lesser chances of progression to malignancy. The case defined below is one of the few cases in the literature that reports the presentation of IMT and another malignancy. We describe a 72-year-old man who was found to have cecal carcinoma and later diagnosed with an IMT of the testis. IMTs are generally benign tumors with a tendency for local recurrence. Patients affected by IMTs usually get diagnosed only after more than one biopsy. IMT is diagnosed only after ruling out other differential diagnoses. They rarely show invasiveness and metastasize. The presence of metastasis, recurrence, and other malignancies probably indicate poor prognosis and poor survival. The course of IMTs is usually benign, with good outcomes after surgery. IMTs have been known to recur, invade, or metastasize in sites such as paranasal sinuses, mediastinum, and the abdomen. In the case that we researched, vimentin and smooth muscle actin were strongly positive in the spindle-shaped cells, whereas anaplastic lymphoma kinase-1 was negative.
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Affiliation(s)
- R Chandramouli
- Radiation Oncology, Krishna Cancer Institute, Cuddalore, IND
| | - Y Sree Sowmya
- Radiation Oncology, Great Eastern Medical School and Hospital, Ragolu, IND
| | | | - Debasis Gochhait
- Pathology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, IND
| | - Pandjatcharam Jagadesan
- Radiation Oncology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, IND
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44
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Fernández AG, Ayestarán NZ, Miguélez SH. Tracheal Inflammatory Myofibroblastic Tumour ALK+ as Cause of Dyspnea in a 10 Years Old Child. Indian J Otolaryngol Head Neck Surg 2023; 75:2511-2514. [PMID: 37636695 PMCID: PMC10447711 DOI: 10.1007/s12070-023-03775-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 04/03/2023] [Indexed: 08/29/2023] Open
Abstract
Inflammatory myofibroblastic tumours are rare lesions that could occur in airways. We report a 10 years old male who complains about dyspnea after physical exercise. Making CT and RMI images and a biopsy, we make an accurate diagnosis of an inflammatory myofibroblastic tumour ALK+. After treatment with a subtotal resection and crizotinib as adjuvant, we achieve a complete remission. Supplementary Information The online version contains supplementary material available at 10.1007/s12070-023-03775-5.
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Affiliation(s)
- Andrés González Fernández
- Department of Otolaryngology and head and neck surgery, Virgen del Camino Hospital. Pamplona, Calle Atenas 5, 8ºA (Atenas Street 5, 8ºA), 31016 Navarra, Spain
| | - Nerea Zubicaray Ayestarán
- Department of Otolaryngology and head and neck surgery, Virgen del Camino Hospital. Pamplona, Calle Atenas 5, 8ºA (Atenas Street 5, 8ºA), 31016 Navarra, Spain
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45
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Kawakita Y, Anan K, Kurata K, Koga K, Saimura M, Tamiya S, Nishihara K, Mitsuyama S, Nakano T. Anaplastic lymphoma kinase-positive inflammatory myofibroblastic tumor of the breast: a case report and review of the literature. Surg Case Rep 2023; 9:152. [PMID: 37656266 PMCID: PMC10474000 DOI: 10.1186/s40792-023-01732-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/20/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND Few reports of inflammatory myofibroblastic tumor (IMT) of the breast have been published worldwide. Furthermore, primary anaplastic lymphoma kinase (ALK)-positive IMT of the breast is extremely rare. To date, only six patients with ALK-positive IMT have been reported in the literature. CASE PRESENTATION A 52-year-old woman underwent a medical examination, and a left breast mass was detected. She did not feel a mass in her chest. Mammography showed a focal asymmetric density at the lower outer portion of the left breast. Breast ultrasonography showed a 1.2-cm hypoechoic lesion with relatively clear boundaries and poor blood flow. Magnetic resonance imaging and computed tomography revealed a solitary heterogeneous mass in the left breast. Pathologic examination revealed a fibrosing lesion with proliferation of fibroblastic cells arranged in a storiform pattern and admixed inflammatory cells. Immunohistochemical examination showed that the tumor cells were positive for ALK. Under the preoperative diagnosis of IMT, we performed partial mastectomy with adequate margins. The postoperative diagnosis was pathologically confirmed as IMT. Immunohistochemical staining also showed overexpression of ALK-1 in the tumor. The patient had a good clinical course for 24 months postoperatively, without recurrence or metastasis. CONCLUSIONS IMT of the breast shows nonspecific imaging findings, making preoperative diagnosis difficult. Nevertheless, IMT has the characteristics of low-grade neoplasms with recurrence, invasion, and metastatic potential. Our report emphasizes the importance of determining a treatment plan as soon as possible based on an accurate diagnosis to improve the prognosis of this disease.
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Affiliation(s)
- Yasutaka Kawakita
- Department of Surgery, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan.
- Department of Surgery 1, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka Yahatanishi-Ku, Kitakyushu, Fukuoka, 807-8555, Japan.
| | - Keisei Anan
- Department of Surgery, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan
| | - Kanako Kurata
- Department of Surgery, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan
| | - Kenichiro Koga
- Department of Surgery, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan
| | - Michiyo Saimura
- Department of Surgery, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan
| | - Sadafumi Tamiya
- Department of Pathology, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan
| | - Kazuyoshi Nishihara
- Department of Surgery, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan
| | - Shoshu Mitsuyama
- Department of Surgery, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan
| | - Toru Nakano
- Department of Surgery, Kitakyushu Municipal Medical Center, 2-1-1 Bashaku Kokurakita-Ku, Kitakyushu, Fukuoka, 802-0077, Japan
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Papke DJ. Mesenchymal Neoplasms of the Liver. Surg Pathol Clin 2023; 16:609-634. [PMID: 37536892 DOI: 10.1016/j.path.2023.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Mesenchymal neoplasms of the liver can be diagnostically challenging, particularly on core needle biopsies. Here, I discuss recent updates in neoplasms that are specific to the liver (mesenchymal hamartoma, undifferentiated embryonal sarcoma, calcifying nested stromal-epithelial tumor), vascular tumors of the liver (anastomosing hemangioma, hepatic small vessel neoplasm, epithelioid hemangioendothelioma, angiosarcoma), and other tumor types that can occur primarily in the liver (PEComa/angiomyolipoma, inflammatory pseudotumor-like follicular dendritic cell sarcoma, EBV-associated smooth muscle tumor, inflammatory myofibroblastic tumor, malignant rhabdoid tumor). Lastly, I discuss metastatic sarcomas to the liver, as well as pitfalls presented by metastatic melanoma and sarcomatoid carcinoma.
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Affiliation(s)
- David J Papke
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA.
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47
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Inserra MC, Cannizzaro MT, Passaniti G, Celona A, Secinaro A, Curione D, D'Angelo T, Garretto O, Romeo P. MR imaging of primary benign cardiac tumors in the pediatric population. Heliyon 2023; 9:e19932. [PMID: 37809686 PMCID: PMC10559362 DOI: 10.1016/j.heliyon.2023.e19932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 07/25/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023] Open
Abstract
Primary cardiac tumors are rare in all ages, especially in children, with a reported prevalence range of 0.0017-0.28% in autopsy series. Due to their rarity, the diagnostic and therapeutic pathways reserved to them are usually described by single case reports, leading to the point where a common diagnostic protocol is imperative to obtain a differential diagnosis. The first diagnostic approach is done with transthoracic echocardiogram (TTE), due to its wide availability, low cost, absence of ionizing radiations and non-invasiveness. Several tumors are discovered incidentally and, in many cases, TTE is helpful to determine location, size and anatomical features, playing a key role in the differential diagnosis. In the last few years, cardiac magnetic resonance imaging (CMR) has had an increased role in the diagnostic pathway of pediatric cardiac masses, due to its high accuracy in characterizing mass tissue properties (especially for soft tissue), and in detecting tumor size, extent, pericardial/pleural effusion, leading to the correct diagnosis, treatment and follow-up. Therefore, nowadays, several consensus statements consider CMR as a leading imaging technique, thanks to its non-invasive tissue characterization, without the use of ionizing radiation, in an unrestricted field of view. As suggested by the most recent literature, the pediatric protocol is not so different from the adult one, adapted to the size and cardiac frequency of the patient, sometimes requiring special conditions such as free-breathing sequences and/or sedation or general anesthesia in non-cooperating patients.
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Affiliation(s)
| | | | - Giulia Passaniti
- Division of Cardiology, A.O.U. Policlinico “G. Rodolico - San Marco”, Catania, Italy
| | - Antonio Celona
- UOC Radiodiagnostica, San Vincenzo Hospital, Provincial Health Agency of Messina, Taormina, Italy
| | - Aurelio Secinaro
- Advanced Cardiothoracic Imaging, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Davide Curione
- Advanced Cardiothoracic Imaging, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Tommaso D'Angelo
- Diagnostic and Interventional Radiology Unit, BIOMORF Department, University Hospital “Policlinico G. Martino”, Messina Italy
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, the Netherlands
| | - Orazio Garretto
- UOSD Radiologia 2 CAST, A.O.U. Policlinico “G. Rodolico - San Marco”, Catania, Italy
| | - Placido Romeo
- Radiology Department of AO “San Marco”, A.O.U. Policlinico “G. Rodolico - San Marco”, Catania, Italy
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Cordier F, Hoorens A, Ferdinande L, Van Dorpe J, Creytens D. Inflammatory myofibroblastic tumor of the distal common bile duct: Literature review with focus on pathological examination. World J Clin Cases 2023; 11:4734-4739. [PMID: 37584005 PMCID: PMC10424039 DOI: 10.12998/wjcc.v11.i20.4734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/31/2023] [Accepted: 06/26/2023] [Indexed: 07/06/2023] Open
Abstract
Inflammatory myofibroblastic tumor (IMT) of the biliary tract is rare, and often difficult to diagnose or to distinguish from other tumors due to its atypical clinical presentation and nonspecific radiological features. Histologically, IMTs are (myo)fibroblastic neoplasms with a prominent inflammatory infiltrate. They are characterized by receptor tyrosine kinase gene rearrangements, most often involving an anaplastic lymphoma kinase (ALK) translocation. The final diagnosis of IMT depends on histopathology and immunohistochemical examination. In this manuscript, we provide a clinical and morphomolecular overview of IMT and the difficulties that may arise in using immunohistochemical and molecular techniques in diagnosing IMT.
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Affiliation(s)
- Fleur Cordier
- Department of Pathology, Ghent University Hospital, Ghent 9000, Belgium
| | - Anne Hoorens
- Department of Pathology, Ghent University Hospital, Ghent 9000, Belgium
| | | | - Jo Van Dorpe
- Department of Pathology, Ghent University Hospital, Ghent 9000, Belgium
| | - David Creytens
- Department of Pathology, Ghent University Hospital, Ghent 9000, Belgium
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Tong M, Zhang BC, Jia FY, Wang J, Liu JH. Hepatic inflammatory myofibroblastic tumor: A case report. World J Clin Cases 2023; 11:4318-4325. [PMID: 37449218 PMCID: PMC10336984 DOI: 10.12998/wjcc.v11.i18.4318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/15/2023] [Accepted: 05/23/2023] [Indexed: 06/26/2023] Open
Abstract
BACKGROUND Hepatic inflammatory myofibroblastic tumor (HIMT) is a rare type of hepatic tumor. It is always misdiagnosed and mistreated because it is primarily found with no obvious specific manifestation, and its imaging findings are diverse.
CASE SUMMARY Here, we report a case of HIMT that was initially diagnosed as liver malignancy but was confirmed as HIMT by histopathology after hepatectomy. Mostly, HIMTs are infiltrated with plasma cells and stain positively for anaplastic lymphoma kinase on immunohistochemistry as well as for some other kinases.
CONCLUSION HIMT can be treated with single nonsteroidal anti-inflammatory drugs and without surgery when it is diagnosed accurately. Because the etiology of HIMT is unknown and the diagnosis is difficult, the pathogenesis and clinical process need to be further studied.
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Affiliation(s)
- Meng Tong
- Department of General Surgery, Jinzhou Medical University, Jinzhou 121001, Liaoning Province, China
| | - Bo-Cheng Zhang
- Department of General Surgery, Jinzhou Medical University, Jinzhou 121001, Liaoning Province, China
| | - Fei-Yu Jia
- Graduate Management Office, Education and Teaching Department, Linyi People’s Hospital, Linyi 276000, Shandong Province, China
| | - Jing Wang
- Department of Radiology, Linyi People’s Hospital, Linyi 276000, Shandong Province, China
| | - Jing-Hua Liu
- Department of Hepatobiliary Surgery and Minimally Invasive Institute of Digestive Surgery and Prof. Cai’s Laboratory, Linyi People’s Hospital, Linyi 276000, Shandong Province, China
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Taiymi A, Meryem N, Bouziane M, Zazour A, Kharrasse G, Khannoussi W, Ismaili Z. Abdominal Inflammatory Myofibroblastic Tumour Presenting as a Pancreatic Mass: A Case Report. Cureus 2023; 15:e41213. [PMID: 37525776 PMCID: PMC10387333 DOI: 10.7759/cureus.41213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2023] [Indexed: 08/02/2023] Open
Abstract
An abdominal inflammatory myofibroblastic tumor (AIMT), is a rare benign tumor composed of inflammatory and other mesenchymal cells. It can affect the entire body, predominantly in children and young adults. The diagnosis is challenging considering the wide clinical presentation and can often be mistaken for malignant tumors. We report a rare case of a 46-year-old female patient, who presented with intermittent abdominal pain weight loss, and an abdominal palpable mass. Abdominal ultrasound found a well-defined 18 cm, rounded mass, with solid and cystic components. Abdominal CT demonstrated a well-defined, hypodense, retro gastric mass of 20 cm, with thickened wall and heterogenous enhancement. The mass had contact with the pancreatic tail, transverse colon, spleen, left kidney pedicles, abdominal aorta, superior mesenteric vein, and mesaraic trunk with no invasion signs. The mass was initially thought to be pancreatic cancer, but given the large size, other diagnoses like sarcoma, lymphoma, or abdominal hydatid cyst were suggested. Endoscopic ultrasound found a rounded retro gastric mass of 18/12 cm, with a thickened wall and well-limited calcifications. The content was both cystic and solid with mobile vegetations, with no visible Doppler flow. The mass had contact with the body and tail of the pancreas, spleen hilum, the upper pole of the spleen, and the hepatic pedicle behind, with no invasion sign. After a multidisciplinary team meeting, a decision was taken to perform surgical resection with mass resection, distal splenopancreatectomy, and transverse and sigmoid colectomy. Pathological and immunostaining results were consistent with inflammatory pseudotumor. The postoperative recovery was uncomplicated. The patient remains asymptomatic with no obvious signs of metastasis or recurrence. AIMT represents a reel diagnostic challenge. Clinical symptoms are unspecific. Radiological and endoscopic features can often be mistaken for malignant tumors. Surgical management remains to be the best therapeutic option. We report a rare case of AIMT treated by surgery with complete resection. We suggested a long-term follow-up given the local recurrence risk.
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Affiliation(s)
- Afafe Taiymi
- Gastroenterology and Hepatology, Digestive Disease Research Laboratory, Mohammed First University, Oujda, MAR
| | - Nasiri Meryem
- Gastroenterology and Hepatology, Mohammed VI University Hospital, Oujda, MAR
| | | | - Abdelkrim Zazour
- Gastroenterology and Hepatology, Mohammed VI University Hospital, Oujda, MAR
| | - Ghizlane Kharrasse
- Gastroenterology and Hepatology, Mohammed VI University Hospital, Oujda, MAR
- Gastroenterology and Hepatology, Digestive Disease Research Laboratory, Mohammed First University, Oujda, MAR
| | - Wafaa Khannoussi
- Gastroenterology and Hepatology, Mohammed VI University Hospital, Oujda, MAR
- Gastroenterology and Hepatology, Digestive Disease Research Laboratory, Mohammed First University, Oujda, MAR
| | - Zahi Ismaili
- Gastroenterology and Hepatology, Mohammed VI University Hospital, Oujda, MAR
- Gastroenterology and Hepatology, Digestive Disease Research Laboratory, Oujda, MAR
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