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Khosh E, Kazemi A, Abbaspour E, Vahdati S, Mirenayat MS, Ghaderi-Sohi S, Haseli S, Askari E. Unusual manifestation of synovial sarcoma: A rare case report with elevated beta HCG level. Radiol Case Rep 2024; 19:5262-5267. [PMID: 39359876 PMCID: PMC11445589 DOI: 10.1016/j.radcr.2024.07.178] [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: 05/23/2024] [Revised: 07/29/2024] [Accepted: 07/30/2024] [Indexed: 10/04/2024] Open
Abstract
Synovial sarcoma is a rare type of soft tissue sarcoma that typically arises in the lower extremities and rarely in the upper extremities. Here, we present an unusual case of a middle-aged man who complained of dyspnea, dry cough, and chest pain and was found to have a mass-like lesion on the ulnar side of his left wrist during physical examination. The patient also exhibited gynecomastia and had elevated β-human chorionic gonadotropin (βHCG) levels. Subsequent imaging and histopathological analysis of the wrist mass confirmed the diagnosis of synovial sarcoma with disseminated lung metastasis. This article aims to provide a comprehensive overview of the clinical and pathological characteristics of synovial sarcoma, highlight the importance of considering synovial sarcoma as a differential diagnosis in patients with abnormal hormonal assays, and emphasize the need for clinicians to be vigilant about any pathologic lesions existing on the upper extremity to avoid late diagnosis and the development of advanced cancerous diseases.
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Affiliation(s)
- Elnaz Khosh
- Department of Radiology, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Arya Kazemi
- Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elahe Abbaspour
- Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Sanaz Vahdati
- Radiology Informatics Lab (RIL), Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
| | - Maryam Sadat Mirenayat
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Sara Haseli
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Askari
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
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2
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Chen Y, Chen T, Zhu W, Li L, Fang C, Zhang H. Rare primary intrapulmonary malignant peripheral nerve sheath tumor showing significant response to sintilimab: A case report and literature review. Oncol Lett 2024; 28:423. [PMID: 39035047 PMCID: PMC11258603 DOI: 10.3892/ol.2024.14556] [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: 03/27/2024] [Accepted: 06/11/2024] [Indexed: 07/23/2024] Open
Abstract
Primary pulmonary malignant peripheral nerve sheath tumor (MPNST) is a rare soft tissue sarcoma with a low incidence, poor prognosis and limited treatment options. The present study reported a case of lung MPNST in a 63-year-old male patient without any pulmonary symptoms. Immunohistochemical analysis of the tumor indicated a programmed death-ligand 1 (PD-L1) expression tumor proportion score of 60%. A total of six courses of sintilimab were used in this patient and a remarkable response was achieved. In summary, sintilimab single-agent immunotherapy may be a novel treatment for pulmonary MPNST. When encountering analogous cases in the future, oncologists can test for the expression of PD-L1 in patients to guide the therapy's design.
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Affiliation(s)
- Yunqi Chen
- Oncology Department, Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese Medicine, Zhongshan, Guangdong 528400, P.R. China
| | - Ting Chen
- Oncology Department, Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese Medicine, Zhongshan, Guangdong 528400, P.R. China
| | - Wanshan Zhu
- Oncology Department, Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese Medicine, Zhongshan, Guangdong 528400, P.R. China
| | - Luzhen Li
- Oncology Department, Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese Medicine, Zhongshan, Guangdong 528400, P.R. China
| | - Cantu Fang
- Oncology Department, Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese Medicine, Zhongshan, Guangdong 528400, P.R. China
| | - Huatang Zhang
- Oncology Department, Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese Medicine, Zhongshan, Guangdong 528400, P.R. China
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3
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Folpe AL, Tetzlaff MT, Billings SD, Torres-Mora J, Borowsky AD, Santiago TC, Ameline B, Baumhoer D. Superficial Neurocristic EWSR1::FLI1 Fusion Tumor: A Distinctive, Clinically Indolent, S100 Protein/SOX10-Positive Neoplasm. Mod Pathol 2024; 37:100537. [PMID: 38866368 DOI: 10.1016/j.modpat.2024.100537] [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: 03/20/2024] [Revised: 05/24/2024] [Accepted: 06/04/2024] [Indexed: 06/14/2024]
Abstract
It is now understood that identical gene fusions may be shared by different entities. We report a distinctive neoplasm of the skin and subcutis, harboring the Ewing sarcoma-associated EWSR1::FLI1 fusion but differing otherwise from Ewing sarcoma. Slides and blocks for 5 cutaneous neoplasms coded as other than Ewing sarcoma and harboring EWSR1::FLI1 were retrieved. Immunohistochemical and molecular genetic results were abstracted from reports. Methylation profiling was performed. Clinical information was obtained. The tumors occurred in 4 men and 1 woman (median: 25 years of age; range: 19-69 years) and involved the skin/subcutis of the back (2), thigh, buttock, and chest wall (median: 2.4 cm; range: 1-11 cm). Two tumors were present "years" before coming to clinical attention. The lesions were multinodular and circumscribed and consisted of nests of bland, round cells admixed with hyalinized collagenous bands containing spindled cells. Hemorrhage and cystic change were often present; necrosis was absent. All were diffusely S100 protein/SOX10-positive; 4 of 5 were CD99-negative. One tested case was strongly positive for NKX2.2. A variety of other tested markers were either focally positive (glial fibrillary acidic protein, p63) or negative. Molecular genetic results were as follows: EWSR1 exon 7::FLI1 exon 8, EWSR1 exon 11::FLI1 exon 5, EWSR1 exon 11::FLI1 exon 6, EWSR1 exon 7::FLI1 exon 6, and EWSR1 exon 10::FLI1 exon 6. Methylation profiling (3 cases) showed these to form a unique cluster, distinct from Ewing sarcoma. All patients underwent excision with negative margins; one received 1 cycle of chemotherapy. Clinical follow-up showed all patients to be alive without disease (median: 17 months; range: 11-62 months). Despite similar gene fusions, the morphologic, immunohistochemical, epigenetic, and clinical features of these unique EWSR1::FLI1-fused neoplasms of the skin and subcutis differ substantially from Ewing sarcoma. Interestingly, EWSR1 rearrangements involved exons 10 or 11, only rarely seen in Ewing sarcoma, in a majority of cases. Superficial neurocristic EWSR1::FLI1 fusion tumors should be rigorously distinguished from true cutaneous Ewing sarcomas.
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Affiliation(s)
- Andrew L Folpe
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota.
| | - Michael T Tetzlaff
- Departments of Pathology and Dermatology, University of California-San Francisco, San Francisco, California
| | - Steven D Billings
- Department of Pathology, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Jorge Torres-Mora
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | | | | | - Baptiste Ameline
- Bone Tumor Reference Center at the Institute of Medical Genetics and Pathology, University Hospital and University of Basel, Basel, Switzerland
| | - Daniel Baumhoer
- Bone Tumor Reference Center at the Institute of Medical Genetics and Pathology, University Hospital and University of Basel, Basel, Switzerland; Basel Research Centre for Child Health, Basel, Switzerland
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4
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Guedes F, Llorian E, Henriques VM, Torrão-Junior FJL. Brachial plexus peripheral nerve sheath tumors (PNSTs): clinical and surgical management in the pediatric population. Childs Nerv Syst 2024:10.1007/s00381-024-06509-2. [PMID: 38940956 DOI: 10.1007/s00381-024-06509-2] [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: 05/10/2024] [Accepted: 06/17/2024] [Indexed: 06/29/2024]
Abstract
PURPOSE Peripheral nerve sheath tumors (PNSTs) are rare in pediatric patients, especially in the brachial plexus. Research on PNSTs is lacking. This article presents a retrospective cohort study of pediatric patients diagnosed and treated with PNSTs, specifically brachial plexus tumors. METHODS All pediatric patients intervened in a single center between 2007 and 2023 with brachial plexus tumors were systemically analyzed. RESULTS Eleven pediatric patients with 14 brachial plexus PNSTs were studied. The gender distribution was 64% female and 36% male, with an average age of 10.7 years. Ninety-one percent had a previous NF-1 diagnosis. Right brachial plexus presented a higher prevalence (64%). Pain, Tinel's sign, and stiffness masses were common during diagnosis. Motor deficits were noted in 43% of the patients. Surgery was indicated for symptoms, particularly pain and rapid growth, increasing malignancy risk. Due to suspected malignancy, an en bloc resection with safety margins was performed. Among the patients, 57% received a histopathological diagnosis of MPNST (malignant peripheral nerve sheath tumor). Treatment included radiotherapy and chemotherapy. Clinical follow-up was conducted for all cases, involving clinical and oncological evaluations for all MPNSTs. CONCLUSIONS This article present a series of pediatric brachial plexus tumors, especially in NF-1, and emphasizes the importance of thorough evaluation for this group. Swift diagnosis is crucial in pediatrics, enabling successful surgery for small lesions with limited neurological symptoms, improving long-term outcomes. Prompt referral to specialized services is urged for suspected masses, irrespective of neurological symptoms. Benign tumor postsurgical progression shows better outcomes than MPNSTs, with complete resection as the primary goal. Needle-guided biopsy is not recommended.
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Affiliation(s)
- Fernando Guedes
- Department of Surgery, School of Medicine, Division of Neurosurgery, Gaffrée and Guinle University Hospital, Federal University of Rio de Janeiro State (UNIRIO), 775 Mariz E Barros Street, Rio de Janeiro, RJ, Brazil.
| | - Evelina Llorian
- Department of Surgery, School of Medicine, Division of Neurosurgery, Gaffrée and Guinle University Hospital, Federal University of Rio de Janeiro State (UNIRIO), 775 Mariz E Barros Street, Rio de Janeiro, RJ, Brazil
| | - Vinícius M Henriques
- Department of Surgery, School of Medicine, Division of Neurosurgery, Gaffrée and Guinle University Hospital, Federal University of Rio de Janeiro State (UNIRIO), 775 Mariz E Barros Street, Rio de Janeiro, RJ, Brazil
| | - Francisco José Lourenço Torrão-Junior
- Department of Surgery, School of Medicine, Division of Neurosurgery, Gaffrée and Guinle University Hospital, Federal University of Rio de Janeiro State (UNIRIO), 775 Mariz E Barros Street, Rio de Janeiro, RJ, Brazil
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5
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Praveen BK, Das S, Gupta M, Joshi D, Panwar H. Primary Spinal Intradural Extramedullary Ewing's Sarcoma/Peripheral Neuroectodermal Tumour Masquerading Clinically as a Neurogenic Tumour: A Case Report and Review of Literature. Ann Neurosci 2023; 30:251-255. [PMID: 38020397 PMCID: PMC10662269 DOI: 10.1177/09727531231190979] [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: 06/21/2022] [Accepted: 03/15/2023] [Indexed: 12/01/2023] Open
Abstract
Ewing's Sarcomas (ES)/Peripheral neuroectodermal tumour (pPNET) are heterogenous group of rare, highly malignant, undifferentiated primitive round-cell neoplasms of neuroectodermal origin. pPNETs are seldom observed to involve the spine of which Spinal Intradural Extramedullary Extraosseous Primary ES/pPNET are extremely rare. We report a case of a 23-year-old male with complaints of low backache and hip pain radiating to the left inguinal region for four months. Radiology findings were suggestive of a neurogenic tumour. Cytomorphology, histomorphology and immunohistochemistry evaluation were done. Diagnosis was consistent with ES/pPNET. Careful correlation between clinical history, cytomorphology, histopathology, immunohistochemical and molecular analysis can help to distinguish primary spinal ES/PNET from other primary spinal tumours and will help clinicians to start treatment at the earliest.
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Affiliation(s)
- B. K. Praveen
- Department of Pathology and Lab Medicine, All India Institute of Medical Science Bhopal, Saket Nagar, Habib Ganj, Bhopal, Madya Pradesh, India
| | - Saikat Das
- Department of Radiotherapy, All India Institute of Medical Science Bhopal, Saket Nagar, Habib Ganj, Bhopal, Madya Pradesh, India
| | - Manish Gupta
- Department of Radiotherapy, All India Institute of Medical Science Bhopal, Saket Nagar, Habib Ganj, Bhopal, Madya Pradesh, India
| | - Deepti Joshi
- Department of Pathology and Lab Medicine, All India Institute of Medical Science Bhopal, Saket Nagar, Habib Ganj, Bhopal, Madya Pradesh, India
| | - Hemlata Panwar
- Department of Pathology and Lab Medicine, All India Institute of Medical Science Bhopal, Saket Nagar, Habib Ganj, Bhopal, Madya Pradesh, India
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6
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Blay JY, von Mehren M, Jones RL, Martin-Broto J, Stacchiotti S, Bauer S, Gelderblom H, Orbach D, Hindi N, Dei Tos A, Nathenson M. Synovial sarcoma: characteristics, challenges, and evolving therapeutic strategies. ESMO Open 2023; 8:101618. [PMID: 37625194 PMCID: PMC10470271 DOI: 10.1016/j.esmoop.2023.101618] [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: 04/18/2023] [Revised: 07/12/2023] [Accepted: 07/20/2023] [Indexed: 08/27/2023] Open
Abstract
Synovial sarcoma (SS) is a rare and aggressive disease that accounts for 5%-10% of all soft tissue sarcomas. Although it can occur at any age, it typically affects younger adults and children, with a peak incidence in the fourth decade of life. In >95% of cases, the oncogenic driver is a translocation between chromosomes X and 18 that leads to the formation of the SS18::SSX fusion oncogenes. Early and accurate diagnosis is often a challenge; optimal outcomes are achieved by referral to a specialist center for diagnosis and management by a multidisciplinary team as soon as SS is suspected. Surgery with or without radiotherapy and/or chemotherapy can be effective in localized disease, especially in children. However, the prognosis in the advanced stages is poor, with treatment strategies that have relied heavily on traditional cytotoxic chemotherapies. Therefore, there is an unmet need for novel effective management strategies for advanced disease. An improved understanding of disease pathology and its molecular basis has paved the way for novel targeted agents and immunotherapies that are being investigated in clinical trials. This review provides an overview of the epidemiology and characteristics of SS in children and adults, as well as the patient journey from diagnosis to treatment. Current and future management strategies, focusing particularly on the potential of immunotherapies to improve clinical outcomes, are also summarized.
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Affiliation(s)
- J-Y Blay
- Department of Medicine, Centre Léon Bérard & University Claude Bernard Lyon I & UNICANCER Lyon, France.
| | - M von Mehren
- Department of Hematology and Medical Oncology, Fox Chase Cancer Center, Philadelphia, USA
| | - R L Jones
- Sarcoma Unit, The Royal Marsden NHS Foundation Trust and Institute of Cancer Research, London, UK
| | - J Martin-Broto
- Medical Oncology Department, Fundación Jimenez Diaz University Hospital, Madrid; Department of Oncology, University Hospital General de Villalba, Madrid; Instituto de Investigacion Sanitaria Fundacion Jimenez Diaz (IIS/FJD; UAM), Madrid, Spain
| | - S Stacchiotti
- Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - S Bauer
- Department of Oncology, West German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - H Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - D Orbach
- SIREDO Oncology Center (Care, Innovation and Research for Children, Adolescents and Young Adults with Cancer), Institut Curie, PSL University, Paris, France
| | - N Hindi
- Medical Oncology Department, Fundación Jimenez Diaz University Hospital, Madrid; Department of Oncology, University Hospital General de Villalba, Madrid; Instituto de Investigacion Sanitaria Fundacion Jimenez Diaz (IIS/FJD; UAM), Madrid, Spain
| | - A Dei Tos
- Department of Medicine, University of Padua School of Medicine and Department of Integrated Diagnostics, Azienda Ospedale-Università Padova, Padua, Italy
| | - M Nathenson
- Oncology Clinical Development, Cell and Gene Therapy, GSK, Waltham, USA
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7
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Challa B, Mohanty SK, Jha S, Sampat NY, Sardana R, Lobo A, Sharma S, Arora S, Rath D, Munjal G, Pattnaik N, Jain D, Jain E, Dewan A, Dixit M, Malik V, Shinde S, Balzer BL, Parwani A. SS18-SSX Expression in a Contemporary Cohort of Primary Renal Synovial Sarcoma: A Multi-Institutional Experience of Fourteen Patients. Int J Surg Pathol 2023; 31:1232-1243. [PMID: 36591871 DOI: 10.1177/10668969221143481] [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: 01/03/2023]
Abstract
Primary renal synovial sarcoma is a rare aggressive mesenchymal neoplasm of the kidney that accounts for less than 1% of renal sarcomas. Herein, we describe the clinicopathologic and molecular findings of 14 renal synovial sarcoma patients in one of the largest case series to date and to our knowledge, the only renal synovial sarcoma series to use novel SS18-SSX IHC. Clinicopathologic, IHC, molecular, management, and follow-up data were reviewed and analyzed. Macroscopically, the tumors had either homogeneous, tan-white, and solid (n = 10), variegated and solid (n = 3), or variegated and solid-cystic (n = 1) cut surfaces. Spindle cell (n = 10), round cell (n = 3), and round to epithelioid morphologies (n = 1) were observed. SS18-SSX IHC was positive in all 14 tumors (diffuse, n = 10; multifocal, n = 2; focal, n = 2). All the tumors harbored SS18::SSX1/2 gene rearrangement. Metastases to the liver, brain, and lung (n = 1); liver and bone (n = 1); liver and diaphragm (n = 1) were identified. Adjuvant chemotherapy was administered in 11/12 patients. Follow-up was available for 10 patients (time period range: 5 to 24 months). Four patients died of disease, and six patients are alive with no recurrence or metastasis. As SS18-SSX IHC showed an excellent concordance with the FISH results, this may reliably be used in the IHC panel of spindle/round cell sarcomas of the kidney and as a molecular surrogate for renal synovial sarcoma, particularly in a resource-limited setting. Also, the tumors with focal SS18-SSX expression had lower break apart signals in the FISH assay (19% and 23% in two tumors with focal SS18-SSX IHC positivity).
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Affiliation(s)
- Bindu Challa
- Departments of Pathology and Laboratory Medicine, Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Sambit K Mohanty
- Departments of Pathology and Laboratory Medicine, Advanced Medical and Research Institute, Bhubaneswar, India
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Shilpy Jha
- Departments of Pathology and Laboratory Medicine, Advanced Medical and Research Institute, Bhubaneswar, India
| | - Nakul Y Sampat
- Departments of Pathology and Laboratory Medicine, Advanced Medical and Research Institute, Bhubaneswar, India
| | - Ruhani Sardana
- Departments of Pathology and Laboratory Medicine, Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Anandi Lobo
- Departments of Pathology and Laboratory Medicine, Kapoor Center of Urology and Pathology, Raipur, India
| | - Shivani Sharma
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Samriti Arora
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Debadarshi Rath
- Departments of Pathology and Laboratory Medicine, Advanced Urology Maxport Hospital, Bhubaneswar, India
| | - Gauri Munjal
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Niharika Pattnaik
- Departments of Pathology and Laboratory Medicine, Advanced Medical and Research Institute, Bhubaneswar, India
| | - Deepika Jain
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Ekta Jain
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Aditi Dewan
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Mallika Dixit
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Vipra Malik
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Sayali Shinde
- Departments of Pathology and Laboratory Medicine, CORE Diagnostics, Gurgaon, India
| | - Bonnie L Balzer
- Departments of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Anil Parwani
- Departments of Pathology and Laboratory Medicine, Ohio State University Wexner Medical Center, Columbus, OH, USA
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8
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Nery B, de Alencar Neto JF, Melo LRDS, Costa RAF, Quaggio E, de Medeiros LS, de Sousa Segundo JA, de Lima NF, Rivero RL. Olfactory groove monophasic sinovial sarcoma and von Recklinghausen's disease: A case report and literature review. Surg Neurol Int 2023; 14:231. [PMID: 37560581 PMCID: PMC10408634 DOI: 10.25259/sni_338_2023] [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: 04/18/2023] [Accepted: 06/13/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Soft-tissue sarcomas are a rare and diverse group of neoplastic lesions. They represent only 1% of malignant tumors in adults and 15% in children. Synovial sarcoma (SS) is a type of soft-tissue sarcoma, accounting for 5-10% of cases, and commonly affecting extremities. Diagnosis, treatment, and prognosis remain challenging especially when localized in uncommon areas, such as intracranial lesions. CASE DESCRIPTION A 13-year-old male patient with a clinical history of neurofibromatosis Type I (NF1) presenting holocranial headache with jet vomiting and apathy 2 days before admission, without neurological deficits and/or focal findings. On magnetic resonance imaging: an extra-axial infiltrative lesion with contrast uptake at the base of the skull in the olfactory groove topography. After total tumor resection, the anatomopathological examination showed monophasic SS. The patient returned after 6 months with similar symptoms, and the lesion recurred and was reoperated. Unfortunately, 7 months after the second surgery, the patient died. CONCLUSION SS can occur extraarticulously and with a variable clinical presentation and poor prognosis despite adjuvant therapies with radiotherapy and chemotherapy. In individuals with clinical history of NF1, there is still no direct correlation between the two manifestations, although current descriptions are suggestive of a possible interaction.
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9
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Do Q, Katiyar V, Rizzo J, Singh V. Primary pleuropulmonary synovial sarcoma presenting with recurrent spontaneous pneumothorax. BMJ Case Rep 2023; 16:e254560. [PMID: 37142283 PMCID: PMC10163521 DOI: 10.1136/bcr-2023-254560] [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] [Indexed: 05/06/2023] Open
Abstract
Primary pleuropulmonary synovial sarcoma (PPSS) is a rare mesenchymal neoplasm, accounting for less than 0.5% of all primary lung tumours. Presentation is often vague and may include cough, chest pain or dyspnoea. Due to the tumour's rarity, diagnosis can be challenging, and not much is known about the disease process or optimal treatment course. In this case report, we describe an older female patient who underwent blebectomy for recurrent pneumothorax. No masses or suspected lesions were found on CT imaging besides the bleb. The bleb was then found to be PPSS via RT-PCR cytology. This case aims to increase awareness of malignant tumours clinically presenting as recurrent pneumothorax with no discrete lung mass on CT imaging. We also highlight the importance of cytogenetics to confirm the diagnosis of this rare tumour.
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Affiliation(s)
- Quan Do
- Internal Medicine, University of Louisville School of Medicine, Louisville, Kentucky, USA
| | - Vatsala Katiyar
- Medical Oncology/Hematology, University of Louisville, Louisville, Kentucky, USA
| | - James Rizzo
- Pathology, Baptist Health Floyd, New Albany, Indiana, USA
| | - Vikas Singh
- Medical Oncology/Hematology, University of Louisville, Louisville, Kentucky, USA
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10
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Zota V, Siegal GP, Kelly D, Bridge JA, Berglund A, Bui K, Khalil F, R Reed D, Altiok S, Magliocco A, Bui MM. Validation of PRKCB Immunohistochemistry as a Biomarker for the Diagnosis of Ewing Sarcoma. Fetal Pediatr Pathol 2023; 42:241-252. [PMID: 36062956 DOI: 10.1080/15513815.2022.2117579] [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] [Indexed: 11/04/2022]
Abstract
Background: Ewing sarcoma (ES) can be confirmed by identifying the EWSR1-FLI1 fusion transcript. This study is to investigate whether immunostaining (IHC) of PRKCB-a protein directly regulated by EWSR1-FLI1 is a surrogate maker for diagnosing ES in routine practice. Methods: Microarray gene expression analyses were conducted. RKCB IHC was applied to 69 ES confirmed by morphology and molecular methods, and 41 non-Ewing small round cell tumors. EWSR1 rearrangement, EWSR1-FLI1 fusion or t(11;22)(q24;q12) were identified by fluorescence in situ hybridization, reverse transcriptase polymerase chain reaction, or cytogenetic analysis, respectively. Results: Gene array analyses showed significant overexpression of the PRKCB in ES. PRKCB IHC was positive in 19 cases of ES with EWSR1-FLI1 fusion, 3 cases with cytogenetic 11:22 translocation and 59 cases with EWSR1 rearrangement while negative in only one EWSR1 rearranged case. PRKCB IHC is sensitive (98%) and specific (96%) in detecting EWSR1 rearranged ES. Conclusions: PRKCB is a reliable antibody for diagnosing ES in routine practice.
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Affiliation(s)
- Victor Zota
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Center, Tampa, FL, USA
| | - Gene P Siegal
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - David Kelly
- Department of Pathology and Laboratory, Children's of Alabama, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Julia A Bridge
- Molecular Pathology, ProPath, Dallas, TX, USA
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Anders Berglund
- Biostatistics and Bioinformatics Core, H. Lee Moffitt Cancer Center and Research Center, Tampa, FL, USA
| | - Katherine Bui
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Center, Tampa, FL, USA
| | - Farah Khalil
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Center, Tampa, FL, USA
| | - Damon R Reed
- Department of Individualized Cancer Management, H. Lee Moffitt Cancer Center and Research Center, Tampa, FL, USA
| | - Soner Altiok
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Center, Tampa, FL, USA
| | - Anthony Magliocco
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Center, Tampa, FL, USA
| | - Marilyn M Bui
- Department of Pathology, H. Lee Moffitt Cancer Center and Research Center, Tampa, FL, USA
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11
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Marak JR, Singh N, Pathak S, Awasthi NP. Extraskeletal Ewing sarcoma presenting as an axillary mass with pulmonary metastases. BMJ Case Rep 2023; 16:e255060. [PMID: 36990653 PMCID: PMC10069519 DOI: 10.1136/bcr-2023-255060] [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: 03/31/2023] Open
Abstract
Extraskeletal Ewing sarcoma (EES) is a tumour of rare variant of the Ewing sarcoma family of tumours. This family of tumours can have different features; however, these tumours are categorised on the basis of genetic translocation, specific molecular and immunohistochemical features. EES is seen commonly affecting young adults with poor prognosis and high mortality rates. It can be detected in various locations making its diagnosis more difficult. It can present with varied imaging features, often non-specific. However, imaging plays a vital role in the primary tumour assessment, local staging, preoperative management and surveillance. Management involves surgery with chemotherapy. Long-term prognosis in cases of metastatic disease is very poor. In literature, only three cases of axillary EES have been reported so far. Here, we report the fourth case of large EES originating in the left axillary region in a woman in her 20s. The patient was given neoadjuvant chemotherapy; however, the size of the tumour increased, which was later surgically treated with complete excision of the tumour. Unfortunately, the tumour metastasised to the lung for which the patient was irradiated. Afterwards, the patient presented to the emergency room with respiratory distress for which she was on ventilator support; sadly, the patient died after 1 week.
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Affiliation(s)
- James R Marak
- Radiodiagnosis, Dr Ram Manohar Lohia Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Neha Singh
- Radiodiagnosis & Imaging, CSMMU, Lucknow, India
| | - Swasti Pathak
- Radiodiagnosis, Dr Ram Manohar Lohia Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Namrata P Awasthi
- Pathology, Dr Ram Manohar Lohia Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
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12
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Hones K, Krekora U, Nasri E, Altshuler E. Metastatic malignant peripheral nerve sheath tumour in a patient with neurofibromatosis 1 and review of contemporary systemic treatments. BMJ Case Rep 2022; 15:e250462. [PMID: 36192032 PMCID: PMC9535141 DOI: 10.1136/bcr-2022-250462] [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: 09/23/2022] [Indexed: 06/16/2023] Open
Abstract
Malignant peripheral nerve sheath tumours are rare soft tissue sarcomas commonly seen in patients with neurofibromatosis type 1. They typically manifest in the fibrous sheaths of major nerve trunks in the extremities or in an axial location. Presenting symptoms are generally non-specific, including pain and weakness, and survival is dependent on size and location of the tumour. Surgical resection is the primary treatment modality followed by radiotherapy or chemotherapy; however, prognosis is poor. Medications such as tyrosine kinase inhibitors and mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway inhibitors are increasingly being recognised as potentially effective therapy for these malignancies. We report a case of a patient with neurofibromatosis type 1 presenting with a malignant peripheral nerve sheath tumour along the tibial nerve that was initially diagnosed as a muscle strain. We discuss the utility of diagnostic imaging and pathology in correctly identifying this aggressive tumour as well as review the drugs used in her care.
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Affiliation(s)
- Keegan Hones
- College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Urszula Krekora
- College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Elham Nasri
- Department of Pathology, Immunology and Laboratory Health, University of Florida Health, Gainesville, Florida, USA
| | - Ellery Altshuler
- Internal Medicine, University of Florida, Gainesville, Florida, USA
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13
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Tokur O, Aydın S, Karavas E. Commentary on "Primary orbital monophasic synovial sarcoma with calcification: A case report". World J Clin Cases 2022; 10:8054-8056. [PMID: 36158504 PMCID: PMC9372840 DOI: 10.12998/wjcc.v10.i22.8054] [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: 03/13/2022] [Revised: 05/30/2022] [Accepted: 06/24/2022] [Indexed: 02/06/2023] Open
Abstract
The present letter to the editor is related to the study titled “Primary orbital monophasic synovial sarcoma with calcification: A case report’’. Orbital synovial sarcoma is one of the rare intraorbital masses seen in adult and pediatric populations. Some case reports in the literature revealed that synovial sarcoma may contain calcifications. Therefore, it is important to make differential diagnosis among calcified orbital masses in childhood.
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Affiliation(s)
- Oguzhan Tokur
- Department of Radiology, Ankara Training and Research Hospital, Ankara 06230, Turkey
| | - Sonay Aydın
- Department of Radiology, Erzincan University, Erzincan 24100, Turkey
| | - Erdal Karavas
- Department of Radiology, Erzincan University, Erzincan 24100, Turkey
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14
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Richards R, Jour G, Tafe LJ, Pinto A, Brčić I, Linos K, Kerr DA. Primary Pulmonary Round Cell Sarcomas: Multiple Potential Pitfalls for the Pathologist. Int J Surg Pathol 2022; 30:844-852. [PMID: 35404156 DOI: 10.1177/10668969221091586] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Primary sarcomas of the lung are extremely uncommon. A diverse group of round cell sarcomas has been reported to originate in this location, including Ewing sarcoma, desmoplastic small round cell tumor, rhabdomyosarcoma, and poorly differentiated synovial sarcoma. The rarity of these tumors presents a potential pitfall; without careful study, they may easily be misidentified as the significantly more common poorly differentiated carcinoma. While histomorphology is a key aspect of correctly identifying a sarcoma, ancillary testing has become increasingly important in making a definitive diagnosis, as more and more recurrent genetic alterations are discovered and new entities are defined. We present three cases of primary round cell sarcomas of the lung that proved diagnostically challenging, describe the features and ancillary testing that led to the correct diagnoses, and discuss classic and evolving entities among sarcomas with round cell morphology.
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Affiliation(s)
- Ryland Richards
- Department of Pathology and Laboratory Medicine, 22916Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - George Jour
- Department of Pathology, New York University Langone Health, New York, NY, USA
| | - Laura J Tafe
- Department of Pathology and Laboratory Medicine, 22916Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.,Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
| | - Andre Pinto
- 12235Department of Pathology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Iva Brčić
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Konstantinos Linos
- Department of Pathology and Laboratory Medicine, 22916Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.,Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
| | - Darcy A Kerr
- Department of Pathology and Laboratory Medicine, 22916Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.,Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
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15
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Karguppikar MB, Oza CM, Khadilkar V, Khadilkar A. Rare case of renal Ewing sarcoma presenting as ectopic Cushing syndrome in a 12-year-old girl. BMJ Case Rep 2022; 15:e246751. [PMID: 35131789 PMCID: PMC8823052 DOI: 10.1136/bcr-2021-246751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2021] [Indexed: 11/04/2022] Open
Abstract
We present a 12-year-old girl with recent onset weight gain and purple striae over the abdomen. Examination revealed her to be hypertensive. On evaluation for Cushing syndrome (CS), her cortisol and adrenocorticotropic hormone (ACTH) were found to be high. MRI brain showed a suspicious lesion (thought to be pituitary microadenoma). Inferior petrosal sinus sampling was not conclusive of pituitary source of ACTH. High dose dexamethasone suppression test confirmed an ectopic source of ACTH secretion and CT scan revealed a mass in the right kidney which was laparoscopically excised. Histopathology and immunohistochemistry confirmed Ewing sarcoma. Our case highlights the rare presentation of renal Ewing sarcoma (RES) as CS. To the best of our knowledge, this is only the second case report of RES/primitive neuroectodermal tumour of the kidney presenting as CS in paediatric age group and first with a concomitant pituitary incidentaloma.
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Affiliation(s)
- Madhura Bharat Karguppikar
- Growth and Endocrine Unit, Hirabai Cowasji Jehangir Medical Research Institute, Pune, Maharashtra, India
| | - Chirantap Markand Oza
- Growth and Endocrine Unit, Hirabai Cowasji Jehangir Medical Research Institute, Pune, Maharashtra, India
| | - Vaman Khadilkar
- Growth and Endocrine Unit, Hirabai Cowasji Jehangir Medical Research Institute, Pune, Maharashtra, India
- Interdisciplinary School of Health Sciences, Savitribai Phule Pune University, Pune, Maharashtra, India
| | - Anuradha Khadilkar
- Growth and Endocrine Unit, Hirabai Cowasji Jehangir Medical Research Institute, Pune, Maharashtra, India
- Interdisciplinary School of Health Sciences, Savitribai Phule Pune University, Pune, Maharashtra, India
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16
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Trikalinos NA, Chrisinger JSA, Van Tine BA. Common Pitfalls in Ewing Sarcoma and Desmoplastic Small Round Cell Tumor Diagnosis Seen in a Study of 115 Cases. Med Sci (Basel) 2021; 9:medsci9040062. [PMID: 34698236 PMCID: PMC8544526 DOI: 10.3390/medsci9040062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/05/2021] [Accepted: 10/08/2021] [Indexed: 01/02/2023] Open
Abstract
Ewing sarcoma (ES), “Ewing-like sarcoma” (ELS) and desmoplastic small round cell tumors (DSRCT) can masquerade as other tumor types, particularly neuroendocrine neoplasms and receive inappropriate treatment. We retrieved 115 cases of ES, ELS and DSRCT seen over 17 years in a tertiary center. An initial misdiagnosis or incomplete diagnosis occurred in 6/93 (6.4%) of ES/ELS and 5/22 (22.7%) of DSRCT cases. The most frequent misdiagnosis was small cell neuroendocrine carcinoma. While any misdiagnosis or incomplete classification is almost certainly multifactorial, the most common identified reason for erroneous/incomplete initial reporting was expression of neuroendocrine markers. Other contributing factors included keratin expression, older patient age and apparently unusual tumor location. Most patients treated with a non-sarcoma chemotherapy regimen expired, while those who received a sarcoma-related regimen were alive as of last evaluation. Increased awareness of this diagnostic pitfall is needed in evaluating cases of round cell malignancies.
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Affiliation(s)
- Nikolaos A. Trikalinos
- Division of Medical Oncology, Washington University in St. Louis, St. Louis, MO 63110, USA;
- Siteman Cancer Center, St. Louis, MO 63110, USA
- Correspondence: ; Tel.: +314-747-7955; Fax: +314-747-5123
| | - John S. A. Chrisinger
- Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, MO 63110, USA;
| | - Brian A. Van Tine
- Division of Medical Oncology, Washington University in St. Louis, St. Louis, MO 63110, USA;
- Siteman Cancer Center, St. Louis, MO 63110, USA
- Department of Pediatric Hematology/Oncology, St. Louis Children’s Hospital, St. Louis, MO 63110, USA
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17
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Do Q, Katiyar V, Breaux A, Singh V. Primary monophasic breast synovial sarcoma in a female patient. BMJ Case Rep 2021; 14:e242313. [PMID: 34373249 PMCID: PMC8354260 DOI: 10.1136/bcr-2021-242313] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2021] [Indexed: 11/03/2022] Open
Abstract
Synovial sarcoma (SS) is a rare soft tissue sarcoma usually arising in the deep soft tissues of the limbs, trunk, and head and neck region. Due to its rarity, diagnosis can be difficult to establish, especially when it involves an uncommon location like the breast. In this case report, we describe a young woman who was found to have primary SS of the breast. Initial immunohistochemistry staining was focally positive for cytokeratin and S100 and she was misdiagnosed with atypical spindle cell carcinoma. Due to the unusual presentation, further testing was performed which showed TLE1 and epithelial membrane antigen positivity, establishing the diagnosis of SS of the breast. A FISH was later sent out and was positive for SS18-SSX fusion transcript. This case highlights the importance of considering rare histopathology in breast lesions and using additional staining and cytogenetics to confirm diagnosis.
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Affiliation(s)
- Quan Do
- Internal Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Vatsala Katiyar
- Medical Oncology/Hematology, University of Louisville, Louisville, Kentucky, USA
| | - Andrea Breaux
- Pathology and Laboratory Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Vikas Singh
- Medical Oncology/Hematology, University of Louisville, Louisville, Kentucky, USA
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18
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Kasajima A, Konukiewitz B, Schlitter AM, Weichert W, Bräsen JH, Agaimy A, Klöppel G. Mesenchymal/non-epithelial mimickers of neuroendocrine neoplasms with a focus on fusion gene-associated and SWI/SNF-deficient tumors. Virchows Arch 2021; 479:1209-1219. [PMID: 34350470 PMCID: PMC8724147 DOI: 10.1007/s00428-021-03156-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 12/24/2022]
Abstract
Mimickers of neuroendocrine neoplasms (NEN) include a number of important pitfall tumors. Here, we describe our experience with mesenchymal mimics of NENs to illustrate their spectrum and draw the attention particularly to a group of mesenchymal/non-epithelial neoplasms (MN) that combine epithelioid histology with neuroendocrine (NE-) features and peculiar genetic abnormalities. In a consultation series of 4498 cases collected between 2009 and 2021, 2099 neoplasms expressing synaptophysin and/or chromograninA were reviewed and analyzed. A total of 364 (18%) were diagnosed as non-NENs, while the remaining tumors were NEN. The group of mesenchymal/non-epithelial neoplasms with NE-features (MN-NE) included 31/364 (8%) cases. These mostly malignant neoplasms showed an epithelioid morphology. While all but one tumor expressed synaptophysin, mostly patchy, only 10/29 (34%) co-expressed chromograninA. A total of 13/31 (42%) of the MN-NE showed EWSR1-related gene fusions (6 Ewing sarcomas, 5 clear cell sarcomas, and 1 desmoplastic small round cell tumor, 1 neoplasm with FUS-CREM gene fusion) and 7 (23%) were SWI/SNF (SMARCB1 or SMARCA4)-deficient neoplasms. The remaining MN-NE included synovial sarcoma, sclerosing epithelioid mesenchymal neoplasm, melanoma, alveolar soft part sarcoma, solitary fibrous tumor, and chordoma. A total of 27/31 MN-NE were from the last 8 years, and 6 of them were located in the pancreas. Eleven MN-NE were initially diagnosed as neuroendocrine carcinomas (NECs). MN-NE with epithelioid features play an increasing role as mimickers of NECs. They mostly belong to tumors with gene fusions involving the EWSR1 gene, or with SWI/SNF complex deficiency. Synaptophysin expression is mostly patchy and chromograninA expression is infrequent in MN-NE of this series and data extracted from literature.
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Affiliation(s)
- Atsuko Kasajima
- Department of Pathology, Technical University Munich, Trogerstr. 18, 81675, Munich, Germany.
- The German Cancer Consortium (DKTK), Heidelberg, Germany.
| | - Björn Konukiewitz
- Department of Pathology, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Anna Melissa Schlitter
- Department of Pathology, Technical University Munich, Trogerstr. 18, 81675, Munich, Germany
- The German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Wilko Weichert
- Department of Pathology, Technical University Munich, Trogerstr. 18, 81675, Munich, Germany
- The German Cancer Consortium (DKTK), Heidelberg, Germany
| | | | - Abbas Agaimy
- Institute of Pathology, Friedrich-Alexander-University, Erlangen-Nürnberg, University Hospital, Erlangen, Germany
| | - Günter Klöppel
- Department of Pathology, Technical University Munich, Trogerstr. 18, 81675, Munich, Germany
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19
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Clinicopathological study of hepatic mesenchymal hamartoma and undifferentiated embryonal sarcoma of the liver: a single center study from Iran. Diagn Pathol 2021; 16:55. [PMID: 34162402 PMCID: PMC8223305 DOI: 10.1186/s13000-021-01117-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 06/10/2021] [Indexed: 12/04/2022] Open
Abstract
Background Undifferentiated embryonal sarcoma of liver (UESL) and hepatic mesenchymal hamartoma (HMH) are two rare entities which mainly affect the pediatric population. The aim of this investigation was to provide a comprehensive overview of the clinicopathologic characteristics of the patients diagnosed with these two conditions in a tertiary referral center in Iran. Methods In this retrospective study patients diagnosed with UESL or HMH between 2012 and 2020 were studied. A comprehensive histopathologic evaluation of the cases along with immunohistochemistry evaluation using a panel of antibodies was conducted. Furthermore, clinical, paraclinical, and treatment data and follow up information was collected. Results A total of 16 patients (8 UESL, 8 HMH) were studied in this investigation. Patients with UESL had a significantly (p = 0.002) higher age at diagnosis compared with those with HMH. Histologically, UESL cases were characterized by anaplastic cells with eosinophilic cytoplasm and bizarre nuclei and frequent atypical mitosis and spindling in a myxoid stroma while disordered arrangement of hepatic parenchyma, bile ducts, and primitive mesenchyme was seen in HMH. Furthermore, small round cells and extramedullary hematopoiesis were seen in 2 UESL and 3 HMH cases, respectively. Concurrent HMH was also seen in two UESL cases. Immunohistochemistry panel showed positive staining for Vimentin, Glypican-3, Desmin, CD56, CD10, and BCL2 in UESL cases and immunoreactivity for Vimentin, HepPar 1, Glypican-3, SMA, CD56, BCL2, and CD34 in various components of HMH. Conclusions In this study, the clinicopathologic features of UESL and HMH cases are presented. We also evaluated the utility of an immunohistochemistry panel in the diagnosis of these two rare entities and suggested novel markers. Our study corroborated the findings of previous investigations and expanded the clinicopathologic features of these two rare entities with diagnostic and potential therapeutic implications.
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20
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Abstract
Synovial sarcoma (SS), an aggressive soft tissue sarcoma with a predilection for the extremities of young adults, harbors the pathognomonic t(X;18)(p11;q11) translocation, resulting in SS18-SSX rearrangements. SS includes monophasic, biphasic, and poorly differentiated variants, which show considerable histologic overlap with a range of other tumor types, making the diagnosis challenging on limited biopsies. Immunohistochemistry (IHC) is routinely used in the differential diagnosis; however, presently available markers lack specificity. Thus, cytogenetic or molecular genetic techniques are often employed to confirm the diagnosis. Here, we report the development and characterization of 2 novel antibodies: an SS18-SSX fusion-specific antibody (E9X9V, designed to the breakpoint) as well as an SSX-specific antibody (E5A2C, designed to the SSX C-terminus). We validated the selectivity and specificity of the antibodies using immunoblotting, immunoprecipitation, and chromatin immunoprecipitation followed by next-generation sequencing in SS cell lines and demonstrated that both antibodies capture SS18-SSX on chromatin at established target sites (eg, TLE1 and BCL2) genome-wide. Using IHC in whole sections from 400 tumors including 100 genetically confirmed cases of SS and 300 histologic mimics, the SS18-SSX fusion-specific antibody revealed strong diffuse nuclear staining in 95 of 100 (95%) SS cases, whereas none of the 300 control tumors showed any staining. The SSX antibody showed strong diffuse nuclear staining in all 100 (100%) SS cases; 13 (4%) of the 300 other tumors were also positive, 5 of which displayed >50% nuclear staining. In summary, a novel SS18-SSX fusion-specific antibody is highly sensitive (95%) and specific (100%) for SS, and an antibody to the SSX C-terminus is also highly sensitive (100%), but slightly less specific (96%). IHC using the SS18-SSX antibody could replace molecular genetic or cytogenetic testing in most cases, and these reagents together will also provide the research community with valuable tools for further biochemical and genomic interrogation of the SS18-SSX fusion protein.
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21
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Li P, Laskin W, Wang WL, Demicco EG, Panse G. Primary superficial synovial sarcoma: clinical and histopathological characteristics in eight cases with molecular confirmation. J Cutan Pathol 2020; 48:263-268. [PMID: 32996614 DOI: 10.1111/cup.13887] [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: 05/29/2020] [Revised: 09/12/2020] [Accepted: 09/18/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIMS Synovial sarcoma (SS) is a spindled cell sarcoma demonstrating varying degrees of epithelial differentiation and characterized by a pathognomonic t(X;18) translocation. SS most frequently involves deep soft tissue of the extremities in young adults. Superficial SS involving dermis and/or subcutaneous tissue is exceedingly rare. METHODS AND RESULTS We identified eight cases of primary superficial synovial sarcomas across three tertiary institutions. All cases were confined to the dermis/subcutis based on imaging or gross and microscopic examination. The average patient age was 36 years (range 14-50). The average tumor size was 2.4 cm (range 0.9-3.9 cm) and lesions showed classic monophasic (n = 4) or biphasic (n = 4) morphology. All tumors expressed keratin AE1/AE3 and/or epithelial membrane antigen (EMA), but were negative for CD34. The diagnosis for each case was confirmed by molecular detection of t(X;18). Six of the eight cases were treated with curative excision while the other two received additional radiotherapy. Follow-up was available for six patients (mean 68 months, range 2-108 months) and no patient experienced recurrence or metastatic disease. CONCLUSIONS We present the largest series to date of primary superficial SS with molecular confirmation for all cases. SS should be considered when evaluating a cutaneous monomorphic spindle cell neoplasm.
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Affiliation(s)
- Philippa Li
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut, USA
| | - William Laskin
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Wei-Lien Wang
- Departments of Pathology and Translational Molecular Pathology, MD Anderson Cancer Center, Houston, Texas, USA
| | - Elizabeth G Demicco
- Department of Pathology and Laboratory Medicine, Sinai Health System, Toronto, Canada
| | - Gauri Panse
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut, USA.,Department of Dermatology, Yale School of Medicine, New Haven, Connecticut, USA
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22
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Malignant gastrointestinal neuroectodermal tumour in soft tissue. Pathology 2020; 53:276-278. [PMID: 32994046 DOI: 10.1016/j.pathol.2020.06.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 06/12/2020] [Accepted: 06/22/2020] [Indexed: 12/24/2022]
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23
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Geller JI, Pressey JG, Smith MA, Kudgus RA, Cajaiba M, Reid JM, Hall D, Barkauskas DA, Voss SD, Cho SY, Berg SL, Dome JS, Fox E, Weigel BJ. ADVL1522: A phase 2 study of lorvotuzumab mertansine (IMGN901) in children with relapsed or refractory wilms tumor, rhabdomyosarcoma, neuroblastoma, pleuropulmonary blastoma, malignant peripheral nerve sheath tumor, or synovial sarcoma-A Children's Oncology Group study. Cancer 2020; 126:5303-5310. [PMID: 32914879 DOI: 10.1002/cncr.33195] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/29/2020] [Accepted: 06/29/2020] [Indexed: 01/27/2023]
Abstract
BACKGROUND Lorvotuzumab mertansine (IMGN901) is an antibody-drug conjugate linking an antimitotic agent (DM1) to an anti-CD56 antibody (lorvotuzumab). Preclinical efficacy has been noted in Wilms tumor, rhabdomyosarcoma, and neuroblastoma. Synovial sarcoma, malignant peripheral nerve sheath tumor (MPNST), and pleuropulmonary blastoma also express CD56. A phase 2 trial of lorvotuzumab mertansine was conducted to assess its efficacy, recommended phase 2 dose, and toxicities. METHODS Eligible patients had relapsed after or progressed on standard therapy for their tumor type. Lorvotuzumab mertansine (110 mg/m2 per dose) was administered at the adult recommended phase 2 dose intravenously on days 1 and 8 of 21-day cycles. Dexamethasone premedication was used. Pharmacokinetic samples, peripheral blood CD56-positive cell counts, and tumor CD56 expression were assessed. RESULTS Sixty-two patients enrolled. The median age was 14.3 years (range, 2.8-29.9 years); 35 were male. Diagnoses included Wilms tumor (n = 17), rhabdomyosarcoma (n = 17), neuroblastoma (n = 12), synovial sarcoma (n = 10), MPNST (n = 5), and pleuropulmonary blastoma (n = 1). Five patients experienced 9 dose-limiting toxicities: hyperglycemia (n = 1), colonic fistula (n = 1) with perforation (n = 1), nausea (n = 1) with vomiting (n = 1), increased alanine aminotransferase in cycle 1 (n = 2), and increased alanine aminotransferase in cycle 2 (n = 1) with increased aspartate aminotransferase (n = 1). Non-dose-limiting toxicities (grade 3 or higher) attributed to lorvotuzumab mertansine were rare. The median values of the maximum concentration, half-life, and area under the curve from zero to infinity for DM1 were 0.87 µg/mL, 35 hours, and 27.9 µg/mL h, respectively. Peripheral blood CD56+ leukocytes decreased by 71.9% on day 8. One patient with rhabdomyosarcoma had a partial response, and 1 patient with synovial sarcoma achieved a delayed complete response. CONCLUSIONS Lorvotuzumab mertansine (110 mg/m2 ) is tolerated in children at the adult recommended phase 2 dose; clinical activity is limited.
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Affiliation(s)
- James I Geller
- Division of Oncology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
| | - Joseph G Pressey
- Division of Oncology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
| | - Malcolm A Smith
- Cancer Therapy Evaluation Program, National Institutes of Health, Bethesda, Maryland
| | - Rachel A Kudgus
- Mayo Clinic Comprehensive Cancer Center, Rochester, Minnesota
| | | | - Joel M Reid
- Mayo Clinic Comprehensive Cancer Center, Rochester, Minnesota
| | - David Hall
- Children's Oncology Group, Monrovia, California
| | - Donald A Barkauskas
- Keck School of Medicine, University of Southern California, Los Angeles, California
| | | | - Steve Y Cho
- University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Stacey L Berg
- Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas
| | | | - Elizabeth Fox
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Brenda J Weigel
- University of Minnesota Medical Center, Minneapolis, Minnesota
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24
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Strimbu CV, Deacanu AB, Esanu AC, Luca AE, Cracana SN. Ewing Sarcoma of Fibula: A Pediatric Case of Disease Regression and Bone Regeneration. Case Report and Literature Review. CURRENT HEALTH SCIENCES JOURNAL 2020; 46:207-212. [PMID: 32874696 PMCID: PMC7445639 DOI: 10.12865/chsj.46.02.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 05/28/2020] [Indexed: 12/05/2022]
Abstract
Ewing's sarcoma is a rare type of bone malignancy that occurs mostly in the bones of the pelvis and the limbs. We report a case of Ewing's sarcoma developed in the peroneal bone of a 10-year-old boy, with a severe affectation of the bone and pulmonary metastasis. Chemotherapy was administered to the patient. Approximately two years after first presentation, radiological exams indicated a nearly complete regenerated fibula and PET-CT scan indicated an inactive right lung mass. This case showed the incredible potency of recovery in pediatric patients and highlights the need for a personalized approach in pediatric orthopedic oncology.
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Gajdzis P, Laé M, Pierron G, Brisse HJ, Orbach D, Fréneaux P, Laurence V, Klijanienko J. Fine-Needle Aspiration Features of BCOR-CCNB3 Sarcoma. Am J Clin Pathol 2020; 153:315-321. [PMID: 31679010 DOI: 10.1093/ajcp/aqz159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES BCOR-CCNB3 sarcoma (BCS) is an undifferentiated tumor that has some clinical and morphologic similarity to classic Ewing sarcoma, but it is characterized by a distinct BCOR-CCNB3 gene fusion. There are no reports describing its cytomorphologic findings. METHODS We describe cytologic findings of five molecularly proven BCS cases (four males and one female, aged 8.5-22 years). RESULTS Smears showed mainly round cells, but some spindle cells and rhabdoid-like cells were also observed. Dispersed cells dominated in smears, but also distinct pseudopapillary structures with vascular cores were noted in four cases. Scant connective tissue fragments were found in four cases. There was no rosette formation in any case. CONCLUSIONS BCS should be differentiated from other round cell tumors. Some cytologic features, especially rhabdoid-like cells, connective tissue fragments, and pseudopapillary formations, combined with immunohistochemical and molecular studies, may be helpful in making the appropriate diagnosis.
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Affiliation(s)
- Pawel Gajdzis
- Department of Pathology, Institut Curie, Paris, France
- Department of Pathomorphology and Oncological Cytology, Medical University of Wroclaw, Wroclaw, Poland
| | - Marick Laé
- Department of Pathology, Institut Curie, Paris, France
- Service de Pathologie, Centre Henri Becquerel, Rouen, France
| | | | | | - Daniel Orbach
- SIREDO (Care, Innovation and Research for Children, Adolescents and Young Adults With Cancer) Oncology Center, Institut Curie, Paris, France
- PSL University, Paris, France
| | - Paul Fréneaux
- Department of Pathology, Institut Curie, Paris, France
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Desmoplastic small round cell tumor showing solid proliferation with limited desmoplasia and confusing immunohistochemical findings: an autopsy report. Med Mol Morphol 2020; 53:177-182. [PMID: 31907620 DOI: 10.1007/s00795-019-00242-5] [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: 11/14/2019] [Accepted: 12/19/2019] [Indexed: 10/25/2022]
Abstract
We herein report a variant case of desmoplastic small round cell tumor (DSRCT) showing limited desmoplasia and confusing immunohistochemical findings. A 26-year-old male was referred for multiple abdominal masses. Laparoscopic biopsy showed only the solid proliferation of small round cells, and he was initially diagnosed with small cell carcinoma. At autopsy, the tumor spread diffusely throughout the abdominal and pelvic cavities. Although the tumor was composed of a predominantly solid pattern of small round cells, multiple samples revealed a fibrous stroma in limited areas only. While immunohistochemistry showed the diffuse expression of desmin, CD99, and bcl-2, epithelial differentiation was unclear with few cytokeratin-positive cells and no staining for the epithelial membrane antigen. Although fluorescence in situ hybridization analysis indicated the EWSR1 gene rearrangement, we were unable to exclude Ewing sarcoma considering the morphological and immunohistochemical findings. The diagnosis of DSRCT was confirmed with a reverse transcription-polymerase chain reaction for EWSR1-WT1 fusion transcripts. DSRCT must be included in a differential diagnosis of small round cell tumors even if desmoplasia is not immediately detected, and thorough sampling and a molecular analysis are mandatory.
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Zheng C, Zhou Y, Luo Y, Zhang H, Tu C, Min L. Case Report: Primary Ewing Sarcoma of the Penis With Multiple Metastases. Front Pediatr 2020; 8:591257. [PMID: 33489999 PMCID: PMC7817810 DOI: 10.3389/fped.2020.591257] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/25/2020] [Indexed: 02/05/2023] Open
Abstract
Background: Ewing sarcoma is the second most common malignant bone tumor in children, but it rarely originates from extra-skeletal sites. The commonly involved sites of soft tissue include paravertebral spaces, lower extremities, the pelvis, head, and neck, while primary extra-skeletal Ewing sarcoma (EES) located in the genitals is extremely rare. Case Presentation: We report a young patient who presented to our hospital with a painful erection of the penis and limited motion of the left hip. Magnetic resonance imaging showed a hyperintense mass with invasion of adjacent tissue in the penis and a heterogeneously high signal lesion in the left proximal femur. 18F-fluorodeoxyglucose positron-emission tomography detected widespread metastatic lesions in the bilateral lung and multiple skeletons. An incisional biopsy of the penis was performed; the histopathological findings and EWS gene translocation identified by molecular analysis confirmed the diagnosis of Ewing sarcoma. Subsequently, the punch-biopsy specimen from the left femur showed undifferentiated small round cells, a finding consistent with the microscopic presence of Ewing sarcoma metastasis. However, after the first course of multiagent chemotherapy, the penile mass did not obtain stabilization but instead grew progressively with surface ulceration and multidrug resistant bacteria infection. Despite receiving antibiotics and maximal supportive therapy, the patient died from sepsis and lung metastasis complications in the intensive care unit 2 months later. Conclusion: This case indicates that although EES as a subtype of Ewing sarcoma is rare, it can occur virtually in any soft tissue site, even in the genitals. Therefore, clinicians need to distinguish this entity from other soft tissue sarcomas with rapid progression since early diagnosis and timely treatment of EES are pivotal for a favorable prognosis.
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Affiliation(s)
- Chuanxi Zheng
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, China
| | - Yong Zhou
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Luo
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, China
| | - Hongying Zhang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Chongqi Tu
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, China
| | - Li Min
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, China
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28
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Wilkison BD, Dalton SR, Xia Y. Recurrent malignant peripheral nerve sheath tumor as a friable nodule within a scar. Clin Case Rep 2019; 7:2019-2021. [PMID: 31788244 PMCID: PMC6878082 DOI: 10.1002/ccr3.2179] [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: 10/25/2018] [Revised: 03/12/2019] [Accepted: 03/23/2019] [Indexed: 11/06/2022] Open
Abstract
This case enforces the importance of a patient's medical history in assisting with the diagnosis of nonspecific cutaneous lesions. Also, other types of lesions occurring within a scar are reviewed.
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Affiliation(s)
- Bart D. Wilkison
- Department of DermatologySan Antonio Uniformed Services Health Education Consortium (SAUSHEC)San AntonioTexas
| | - Scott R. Dalton
- Department of DermatologySan Antonio Uniformed Services Health Education Consortium (SAUSHEC)San AntonioTexas
- Department of PathologySAUSHECSan AntonioTexas
| | - Yang Xia
- Department of DermatologySan Antonio Uniformed Services Health Education Consortium (SAUSHEC)San AntonioTexas
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29
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Chen J, Cheng R, Fan F, Zheng Y, Li Y, Chen Y, Wang Y. Cranial Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumors: A Retrospective Study Focused on Prognostic Factors and Long-Term Outcomes. Front Oncol 2019; 9:1023. [PMID: 31649882 PMCID: PMC6794714 DOI: 10.3389/fonc.2019.01023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 09/23/2019] [Indexed: 12/04/2022] Open
Abstract
Purpose: Cranial Ewing sarcoma (ES)/peripheral primitive neuroectodermal tumors (pPNETs) are rarely reported because of their extremely low incidence, and the current understanding of these tumors is poor. The purpose of this study was to illustrate the clinical, radiological, and pathological features of cranial ES/pPNETs and to discuss prognostic factors by survival analysis. Methods: A total of 31 patients who were pathologically diagnosed with cranial ES/pPNETs between 2000 and 2019 were enrolled in this study. To identify which parameters were associated with higher progression-free survival (PFS) and overall survival (OS) rates, univariate and multivariate analyses were performed. Results: The mean follow-up period was 24.8 months (range, 1–109 months). Eighteen (58.1%) patients had local recurrence and seven (22.6%) patients had distant metastasis. The results of the univariate analysis suggest that the extent of resection and adjuvant radiotherapy are potential prognostic factors for PFS and OS. Adjuvant chemotherapy was associated with OS (P = 0.027) but not with PFS (P = 0.053). The multivariate analysis revealed that the extent of resection and adjuvant radiotherapy were independent prognostic factors for both PFS and OS. In addition, metastasis was an adverse prognostic factor for OS. Conclusions: Surgical management plays a crucial role in the treatment of cranial ES/pPNETs, and gross total resection should be striven for whenever possible. Post-operative radiotherapy is highly recommended to improve PFS and OS. This study also confirms that metastasis is an adverse prognostic factor for cranial ES/pPNETs.
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Affiliation(s)
- Jun Chen
- Department of Neurosurgery, Xianning Center Hospital, Xianning, China
| | - Ruimin Cheng
- Department of Dermatology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Fanfan Fan
- Department of Neurosurgery, Tongji Medical School, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yifeng Zheng
- Department of Neurosurgery, Tongji Medical School, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yakun Li
- Department of Neurosurgery, Tongji Medical School, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Chen
- Department of Neurosurgery, Tongji Medical School, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Wang
- Department of Neurosurgery, Tongji Medical School, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
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30
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Liu W, Zhang S, Liu J, Shao Z. Intraosseous Malignant Peripheral Nerve Sheath Tumor of 2 Consecutive Lumbar Vertebrae: A Case Report and Literature Review. World Neurosurg 2019; 130:459-466. [PMID: 31349078 DOI: 10.1016/j.wneu.2019.07.117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/13/2019] [Accepted: 07/15/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND Malignant peripheral nerve sheath tumor (MPNST), which refers to any malignant tumor that originates from peripheral nerve sheath cells, is rarely found in the spine. Primary intraosseous spinal MPNSTs are extremely uncommon; in fact, such an occurrence has been reported in a very limited number of cases hitherto. We report here one case of low-grade intraosseous MPNST in the lumbar vertebrae and review clinical research related to this rare tumor and modus operandi to its treatment. CASE DESCRIPTION A 51-year-old man suffering from lower back pain was initially diagnosed with lumbar tuberculosis. The intraoperative histopathologic examination, however, revealed that the occupying lesion was synovial sarcoma when surgeons intended to perform a debridement surgery of what was thought to be tuberculosis. The operation was therefore suspended. Two months later, the patient was referred to our institution. The pathologic sections were reexamined. Its results refuted the earlier thought of being synovial sarcoma, and a final diagnosis of MPNST was made. In addition, preoperative examination revealed that the tumor had advanced rapidly to the adjacent inferior vena cava and pedicle, which ruled out the possibility of performing a total en bloc spondylectomy. Therefore, a marginal resection for 2-level consecutive lumbar vertebrae was performed successfully via an anterior-posterior combined approach. No serious complications were detected at 18-month follow-up. CONCLUSIONS Preoperative biopsy is of great importance for the diagnosis of spinal tumors. Marginal resection of a complicated intraosseous spine MPNST via an anterior-posterior combined approach, despite being technically challenging, resulted in good survival and functional outcomes.
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Affiliation(s)
- Weijian Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Shuo Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Jianxiang Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
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31
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The Utility of NKX2.2 and TLE1 Immunohistochemistry in the Differentiation of Ewing Sarcoma and Synovial Sarcoma. Appl Immunohistochem Mol Morphol 2019; 27:174-179. [DOI: 10.1097/pai.0000000000000573] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Hashimoto K, Nishimura S, Fujii K, Kakinoki R, Akagi M. Intraneural synovial sarcoma of the tibial nerve. Rare Tumors 2018; 10:2036361318776495. [PMID: 29854355 PMCID: PMC5971379 DOI: 10.1177/2036361318776495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 04/12/2018] [Indexed: 01/15/2023] Open
Abstract
Synovial sarcomas are malignant soft tissue tumors that carry a metastatic potential and portend poor prognoses. We report a very rare synovial sarcoma arising from the tibial nerve and describe its successful treatment including limb preservation. To the best of our knowledge, this is the 40th reported incident of intraneural synovial sarcoma, and only the fourth arising from the tibial nerve. Extensive resection of synovial sarcoma arising in the popliteal region is difficult, particularly when limb preservation is desired. Ours is the first reported patient treated for tibial nerve-derived synovial sarcoma whose limbs were preserved.
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Affiliation(s)
- Kazuhiko Hashimoto
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Japan
| | - Shunji Nishimura
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Japan
| | - Kousuke Fujii
- Department of Cardiovascular Surgery, Kindai University Hospital, Osaka-Sayama City, Japan
| | - Ryosuke Kakinoki
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Japan
| | - Masao Akagi
- Department of Orthopedic Surgery, Kindai University Hospital, Osaka-Sayama City, Japan
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34
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Su Z, Zhang J, Gao P, Shi J, Qi M, Chen L, Wang X. Synovial sarcoma of the tongue: report of a case and review of the literature. Ann R Coll Surg Engl 2018; 100:e118-e122. [PMID: 29607724 DOI: 10.1308/rcsann.2018.0045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
This report outlines the work-up and management of a 35-year-old man with a synovial sarcoma of the lateral border of the tongue. Synovial sarcoma of the tongue is an extremely rare tumour with variable morphological microscopic types and characters of immunohistochemical profile. There have only been 15 cases previously reported. This report aims to update the literature on this subject and explore the best treatment options.
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Affiliation(s)
- Z Su
- School of Stomatology, Shandong University, Jinan City, Shandong Province , Jinan City, Shandong Province , China
| | - J Zhang
- Stomatological Hospital of Shandong University , Jinan City, Shandong Province , China
| | - P Gao
- School of Stomatology, Shandong University, Jinan City, Shandong Province , Jinan City, Shandong Province , China
| | - J Shi
- School of Stomatology, Shandong University, Jinan City, Shandong Province , Jinan City, Shandong Province , China
| | - M Qi
- School of Stomatology, Shandong University, Jinan City, Shandong Province , Jinan City, Shandong Province , China
| | - L Chen
- School of Stomatology, Shandong University, Jinan City, Shandong Province , Jinan City, Shandong Province , China
| | - X Wang
- Stomatological Hospital of Shandong University , Jinan City, Shandong Province , China
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35
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Wong KS, Jo VY. Cytologic diagnosis of round cell sarcomas in the era of ancillary testing: an updated review. J Am Soc Cytopathol 2018; 7:119-132. [PMID: 31043308 DOI: 10.1016/j.jasc.2017.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 11/29/2017] [Accepted: 12/11/2017] [Indexed: 10/18/2022]
Abstract
Round cell sarcomas constitute a large proportion of "small round blue cell tumors," which encompass a broad differential diagnosis and can be difficult to distinguish on cytomorphologic grounds alone. Numerous pathogenetic insights and advances in ancillary testing in soft tissue pathology over the last several decades have made accurate classification of soft tissue neoplasms increasingly feasible. Immunohistochemistry and genetic/molecular testing can now be performed on all cytologic preparations, including unstained smears, needle rinses, cell blocks, and liquid-based preparations, and this has greatly increased our diagnostic abilities. Nevertheless, there remain numerous diagnostic challenges, including variable sensitivity and specificity of available immunohistochemical markers, overlapping immunophenotypes between entities, and "promiscuity" of genetic alterations such as EWSR1 rearrangements, present in a multitude of tumor types. Herein we provide a review on the cytologic, immunohistochemical, and genetic features of the more frequently encountered round cell sarcomas, as well as recently described entities, with an emphasis on diagnostic pitfalls and judicious use of ancillary studies.
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Affiliation(s)
- Kristine S Wong
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Vickie Y Jo
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
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36
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Pelosi G, Sonzogni A, Harari S, Albini A, Bresaola E, Marchiò C, Massa F, Righi L, Gatti G, Papanikolaou N, Vijayvergia N, Calabrese F, Papotti M. Classification of pulmonary neuroendocrine tumors: new insights. Transl Lung Cancer Res 2017; 6:513-529. [PMID: 29114468 PMCID: PMC5653522 DOI: 10.21037/tlcr.2017.09.04] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 09/12/2017] [Indexed: 12/11/2022]
Abstract
Neuroendocrine tumors of the lung (Lu-NETs) embrace a heterogeneous family of neoplasms classified into four histological variants, namely typical carcinoid (TC), atypical carcinoid (AC), large cell neuroendocrine carcinoma (LCNEC) and small cell lung carcinoma (SCLC). Defining criteria on resection specimens include mitotic count in 2 mm2 and the presence or absence of necrosis, alongside a constellation of cytological and histological traits including cell size and shape, nuclear features and overall architecture. Clinically, TC are low-grade malignant tumors, AC intermediate-grade malignant tumors and SCLC/LCNEC high-grade malignant full-blown carcinomas with no significant differences in survival between them. Homologous tumors arise in the thymus that occasionally have some difficulties in differentiating from the lung counterparts when presented with large unresectable or metastatic lesions. Immunohistochemistry (IHC) helps refine NE diagnosis at various anatomical sites, particularly on small-sized tissue material, in which only TC and small cell carcinoma categories can be recognized easily on hematoxylin & eosin stain, while AC and LCNEC can only be suggested on such material. The Ki-67 labeling index effectively separates carcinoids from small cell carcinoma and may prove useful for the clinical management of a metastatic disease to help the therapeutic decision-making process. Although carcinoids and high-grade neuroendocrine carcinomas in the lung and elsewhere make up separate tumor categories on molecular grounds, emerging data supports the concept of secondary high-grade NETs arising in the preexisting carcinoids, whose clinical and biological relevance will have to be placed into the proper context for the optimal management of these patients. In this review, we will discuss the selected, recent literature with a focus on current issues regarding Lu-NET nosology, i.e., classification, derivation and tumor evolution.
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Affiliation(s)
- Giuseppe Pelosi
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Milan, Italy
- Inter-hospital Pathology Division, Science & Technology Park, IRCCS MultiMedica Group, Milan, Italy
| | - Angelica Sonzogni
- Department of Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Sergio Harari
- Department of Medical Sciences and Division of Pneumology, San Giuseppe Hospital, Science & Technology Park, IRCCS MultiMedica Group, Milan, Italy
| | - Adriana Albini
- Laboratory of Vascular Biology and Angiogenesis, Science & Technology Park, IRCCS MultiMedica Group, Milan, Italy
| | - Enrica Bresaola
- Department of Pathology and Laboratory Medicine, European Institute of Oncology, Milan, Italy
| | - Caterina Marchiò
- Department of Medical Sciences, University of Turin, and Pathology Division, AOU Città della Salute e della Scienza, Turin, Italy
| | - Federica Massa
- Department of Oncology, University of Turin, and Pathology Division, AOU Città della Salute e della Scienza, Turin, Italy
| | - Luisella Righi
- Department of Oncology, University of Turin, Pathology Division, San Luigi Hospital, University of Turin, Turin, Italy
| | - Gaia Gatti
- Department of Oncology, University of Turin, Pathology Division, San Luigi Hospital, University of Turin, Turin, Italy
| | - Nikolaos Papanikolaou
- Inter-hospital Pathology Division, Science & Technology Park, IRCCS MultiMedica Group, Milan, Italy
| | - Namrata Vijayvergia
- Department of Hematology and Oncology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Fiorella Calabrese
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padova, Italy
| | - Mauro Papotti
- Department of Oncology, University of Turin, and Pathology Division, AOU Città della Salute e della Scienza, Turin, Italy
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Abstract
Synovial sarcoma of peripheral nerve (SSPN) is rare with only 26 cases reported in English. SSPN is often mistaken for a benign or malignant peripheral nerve sheath tumor (PNST) by clinicians and pathologists. Fifteen cases of SSPN were retrieved from the pathology files of 3 institutions. All tumors arose in a nerve based on imaging and/or operative findings and the diagnoses were histologically confirmed. Neuropathic symptoms predominated in 11 women and 4 men, 19- to 62-year-old (median, 39 years) with tumors involving the ulnar (5), median (3), peroneal (3) or sciatic (2) nerve, or the L4 or T1 nerve root (2). Tumor sizes ranged from 2 to 13 cm (median, 3.8 cm). The leading clinical diagnosis was PNST (9). Treatment was surgical (14) supplemented with radiation therapy (8) and chemotherapy (6). Fourteen tumors were monophasic and 1 was biphasic; 4 had poorly differentiated (PD) foci (1 rhabdoid). Diagnoses in 12 cases were verified by fluorescence in situ hybridization, reverse transcription polymerase chain reaction or both methods. Follow-up in 14 patients (median, 32 mo) revealed that 2/4 patients with PD tumors died with pulmonary metastases; another was alive with no current evidence of disease (NED) following 2 local recurrences, while the fourth had NED. In contrast, 9/10 patients without PD tumors were alive (7 NED) and 1 died at 12 months with pulmonary infiltrates. SSPN is under-recognized clinically and histologically as it mimics benign and malignant PNST. Molecular analysis is recommended to confirm the diagnosis. PD foci, including rhabdoid areas, may portend a worse outcome, similar to non-neural-based tumors.
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38
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Charville GW, Wang WL, Ingram DR, Roy A, Thomas D, Patel RM, Hornick JL, van de Rijn M, Lazar AJ. EWSR1 fusion proteins mediate PAX7 expression in Ewing sarcoma. Mod Pathol 2017; 30:1312-1320. [PMID: 28643791 DOI: 10.1038/modpathol.2017.49] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 05/04/2017] [Accepted: 05/21/2017] [Indexed: 01/04/2023]
Abstract
PAX7 is a paired-box transcription factor that is required for the developmental specification of adult skeletal muscle progenitors in mice. We previously demonstrated PAX7 expression as a marker of skeletal muscle differentiation in rhabdomyosarcoma. Here, using analyses of published whole-genome gene expression microarray data, we identify PAX7 as a gene with significantly increased expression in Ewing sarcoma in comparison to CIC-DUX4 round cell sarcoma. Analysis of PAX7 in a large cohort of 103 Ewing sarcoma cases by immunohistochemistry revealed expression in 99.0% of cases (102/103). PAX7 expression was noted in cases demonstrating three distinct Ewing sarcoma EWSR1 translocations involving FLI1, ERG, and NFATc2. No PAX7 expression was observed in any of 27 cases of CIC-DUX4 sarcoma by immunohistochemistry (0%; 0/27). Exploring the mechanism of PAX7 expression in Ewing sarcoma using curated RNA- and ChIP-sequencing data, we demonstrate that the EWSR1 fusion protein is required for PAX7 expression in Ewing sarcoma and identify a candidate EWSR1-FLI1-bound PAX7 enhancer that coincides with both a consensus GGAA repeat-containing binding site and a peak of regulatory H3K27 acetylation. Taken together, our findings provide mechanistic support for the utility of PAX7 immunohistochemistry in the diagnosis of Ewing sarcoma, while linking this sarcoma of uncertain histogenesis to a key transcriptional regulator of mammalian muscle progenitor cells.
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Affiliation(s)
- Gregory W Charville
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Wei-Lien Wang
- Departments of Pathology &Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Davis R Ingram
- Departments of Pathology &Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Angshumoy Roy
- Departments of Pathology &Immunology and Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Dafydd Thomas
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI, USA
| | - Rajiv M Patel
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI, USA
| | - Jason L Hornick
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Matt van de Rijn
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Alexander J Lazar
- Departments of Pathology &Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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39
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Sharif M, Mohamed A, Reinacher M. Malignant renal schwannoma in a cat. Open Vet J 2017; 7:214-220. [PMID: 28795017 PMCID: PMC5538086 DOI: 10.4314/ovj.v7i3.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Accepted: 07/05/2017] [Indexed: 11/21/2022] Open
Abstract
A nine-year-old male European shorthair cat with rapidly enlarging mass at the left kidney doubted to be malignant was presented. The purpose of this study is to present the clinical, radiological and pathological findings of a primary renal tumor in the cat. Grossly, the mass mostly encapsulated the kidney. Histologically, excisional biopsy showed worrying histological features. A sarcoma-like tumor composed mainly of neoplastic spindle-shaped cells. Neoplastic nodules of aggregations of fusiform cells arranged in multidirectional bundles. Immunohistochemically, several immunohistochemical satins (melan-A, S-100, vimentin, actin, desmin, cytokeratin, neurofilament, melan-A, NSE, synaptophysin, chromogranin, Glial Fibrillary Acidic Protein GFAP, Collagen IV and CD99) were used to differentially diagnose the mass. The stained neoplastic sections positively tested to S-100, but negative to the other aforementioned immunohistochemical stains. Immunohistochemistry with S-100 antibody staining showed an unusually strong positive reaction throughout the tumor cells. Based on our comparative diagnosis relative to other tumors, in addition to the progressive clinical signs, histopathological and immunohistochemical results, this case was presumptively diagnosis as a malignant schwannoma. According to our investigation of the relevant literature, this study of malignant renal Schwannoma (malignant peripheral nerve sheath tumor) is a highly rare case not previously characterized in a cat.
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Affiliation(s)
- Monier Sharif
- Department of Pathology and Anatomy, Faculty of Veterinary Medicine, University of Omar Al-Mukhtar, Al-Beida, Libya
| | - Adel Mohamed
- Department of Pathology and Anatomy, Faculty of Veterinary Medicine, University of Omar Al-Mukhtar, Al-Beida, Libya
| | - Manfred Reinacher
- Institute for Veterinary Pathology, Justus-Liebig-University, Frankfurter Str. 96, 35392 Giessen, Germany
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40
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Baldauf MC, Orth MF, Dallmayer M, Marchetto A, Gerke JS, Rubio RA, Kiran MM, Musa J, Knott MML, Ohmura S, Li J, Akpolat N, Akatli AN, Özen Ö, Dirksen U, Hartmann W, de Alava E, Baumhoer D, Sannino G, Kirchner T, Grünewald TGP. Robust diagnosis of Ewing sarcoma by immunohistochemical detection of super-enhancer-driven EWSR1-ETS targets. Oncotarget 2017; 9:1587-1601. [PMID: 29416716 PMCID: PMC5788584 DOI: 10.18632/oncotarget.20098] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 07/23/2017] [Indexed: 12/26/2022] Open
Abstract
Ewing sarcoma is an undifferentiated small-round-cell sarcoma. Although molecular detection of pathognomonic EWSR1-ETS fusions such as EWSR1-FLI1 enables definitive diagnosis, substantial confusion can arise if molecular diagnostics are unavailable. Diagnosis based on the conventional immunohistochemical marker CD99 is unreliable due to its abundant expression in morphological mimics. To identify novel diagnostic immunohistochemical markers for Ewing sarcoma, we performed comparative expression analyses in 768 tumors representing 21 entities including Ewing-like sarcomas, which confirmed that CIC-DUX4-, BCOR-CCNB3-, EWSR1-NFATc2-, and EWSR1-ETS-translocated sarcomas are distinct entities, and revealed that ATP1A1, BCL11B, and GLG1 constitute specific markers for Ewing sarcoma. Their high expression was validated by immunohistochemistry and proved to depend on EWSR1-FLI1-binding to highly active proximal super-enhancers. Automated cut-off-finding and combination-testing in a tissue-microarray comprising 174 samples demonstrated that detection of high BCL11B and/or GLG1 expression is sufficient to reach 96% specificity for Ewing sarcoma. While 88% of tested Ewing-like sarcomas displayed strong CD99-immunoreactivity, none displayed combined strong BCL11B- and GLG1-immunoreactivity. Collectively, we show that ATP1A1, BCL11B, and GLG1 are EWSR1-FLI1 targets, of which BCL11B and GLG1 offer a fast, simple, and cost-efficient way to diagnose Ewing sarcoma by immunohistochemistry. These markers may significantly reduce the number of misdiagnosed patients, and thus improve patient care.
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Affiliation(s)
- Michaela C Baldauf
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Martin F Orth
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Marlene Dallmayer
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Aruna Marchetto
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Julia S Gerke
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Rebeca Alba Rubio
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Merve M Kiran
- Department of Pathology, Medical Faculty, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Julian Musa
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Maximilian M L Knott
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Shunya Ohmura
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Jing Li
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Nusret Akpolat
- Department of Pathology, Turgut Ozal Medical Center, Inonu University, Malatya, Turkey
| | - Ayse N Akatli
- Department of Pathology, Turgut Ozal Medical Center, Inonu University, Malatya, Turkey
| | - Özlem Özen
- Department of Pathology, Başkent University Hospital, Ankara, Turkey
| | - Uta Dirksen
- Department of Pediatric Hematology and Oncology, University Hospital Essen, Essen, Germany
| | - Wolfgang Hartmann
- Gerhard-Domagk-Institute for Pathology, University Hospital Münster, Westfalian Wilhelms University, Münster, Germany
| | - Enrique de Alava
- Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, CIBERONC, Seville, Spain
| | - Daniel Baumhoer
- Bone Tumour Reference Center, Institute of Pathology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Giuseppina Sannino
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Thomas Kirchner
- Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Thomas G P Grünewald
- Max-Eder Research Group for Pediatric Sarcoma Biology, Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany.,Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
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41
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Xu P, Chen J. Primary Synovial Sarcoma of the Orbit. OPHTHALMOLOGY AND EYE DISEASES 2017; 9:1179172117701732. [PMID: 28469480 PMCID: PMC5397295 DOI: 10.1177/1179172117701732] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 01/31/2017] [Indexed: 12/17/2022]
Abstract
Purpose: To describe the clinical, pathological, and immunohistochemical characteristics and therapies of a rare case of primary synovial sarcoma in the orbit. Design: Retrospective interventional case report. Participant: A 6-year-old girl with pathologically proven synovial sarcoma in the orbit. The diagnosis was confirmed by immunohistochemistry. Methods: The patient was treated with right lateral orbital and right temporal tumor resection, followed by chemotherapy. She was followed up every 3 months for 1 year. Results: The tumor was excised, and the patient received 5 courses of chemotherapy. She did well during the initial first-year follow-up with no recurrent signs. Conclusions: We reported the sixth case of primary synovial sarcoma in the orbit and the first case of a 6-year-old girl.
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Affiliation(s)
- Pei Xu
- Department of Ophthalmology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China.,Department of Ophthalmology & Visual Sciences, University of Texas Medical Branch, Galveston, TX, USA.,Department of Neuroscience and Cell biology, University of Texas Medical Branch, Galveston, TX, USA
| | - Jianbin Chen
- Department of Ophthalmology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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42
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Carvalho MPN, Fernandes NCCA, Nemer VC, Neto RND, Teixeira RHF, Miranda BS, Mamprim MJ, Catão-Dias JL, Réssio RA. Benign Peripheral Nerve Sheath Tumor in a Wild Toco Toucan ( Ramphastos toco ). J Avian Med Surg 2016; 30:280-285. [PMID: 27736224 DOI: 10.1647/2015-117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Peripheral nerve sheath tumors are a heterogeneous group of neoplasms that comprise neurofibromas, schwannomas, neurilemmomas, and perineuromas. In animals, peripheral nerve sheath neoplasms are most commonly diagnosed in dogs and cattle, followed by horses, goats, and cats, but their occurrence is uncommon in birds. An adult, free-living, male toco (common) toucan ( Ramphastos toco ) was admitted to the zoo animal clinic with weight loss, dehydration, and presence of a soft nodule adhered to the medial portion of the left pectoral muscle. Clinical, cytologic, and computed tomography scan results were indicative of a neoplasm. The toucan died during surgical resection of the mass. Necropsy, histopathologic, and immunohistochemical findings confirmed the diagnosis of benign peripheral nerve sheath tumor. To our knowledge, benign peripheral nerve sheath tumor has not previously been reported in a toucan or any other species in the order Piciformes.
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43
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Adult Primary Spinal Epidural Extraosseous Ewing's Sarcoma: A Case Report and Review of the Literature. Case Rep Neurol Med 2016; 2016:1217428. [PMID: 27610254 PMCID: PMC5005550 DOI: 10.1155/2016/1217428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 07/17/2016] [Indexed: 01/09/2023] Open
Abstract
Background. Extraosseous Ewing's sarcoma in the spinal epidural space is a rare malignancy, especially in adults. Case Presentation. A 40-year-old male presented with back pain and urinary hesitancy. MRI revealed a thoracic extradural mass with no osseous involvement. He underwent surgery for gross total resection of the mass, which was diagnosed as Ewing's sarcoma. He was subsequently treated with chemoradiotherapy. He remains disease-free 1 year after surgery. Review of the literature indicated only 45 previously reported cases of spinal epidural extraosseous Ewing's sarcoma in adults. Conclusions. Extraosseous Ewing's sarcoma in the spinal epidural space is a rare clinical entity that should be included in the differential for spinal epidural masses. Its treatment is multidisciplinary but frequently requires surgical intervention due to compressive neurologic symptoms. Gross total resection appears to correlate with improved outcomes.
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44
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Ke C, Duan Q, Yang H, Zhu F, Yan M, Xu SP, Zhou S, Wan F, Shu K, Lei T, Xia LM. Meningeal Ewing Sarcoma/Peripheral PNET: Clinicopathological, Immunohistochemical and FISH study of four cases. Neuropathology 2016; 37:35-44. [PMID: 27500883 DOI: 10.1111/neup.12325] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 06/19/2016] [Accepted: 06/19/2016] [Indexed: 01/14/2023]
Abstract
Meningeal Ewing Sarcoma (ES)/peripheral primitive neuroectodermal tumor (pPNET) is a rare diagnostically challenging small round cell tumor in the CNS. This study investigates the clinical pathological features of four cases of this tumor from archives of 6 years in our hospital. Patients were within the median age of 21.5 years and male to female ratio was 1:1. The tumors distributed at the supra-tentorial location, posterior fossa and lumbar vertebral canal, usually presenting as the dura-sited nodule or having close connection with the meninges within the cranium or vertebral canal. Histopathologically, small round undifferentiated tumor cells with hypercellularities, scant cytoplasm and inconspicuous nucleoli were observed, although some components such as atypical larger vesicular nuclei, prominent nucleoli of tumor cells, necrotic foci and mesenchymal collagen proliferation forming the lobular structure, were also appreciated. Immunohistochemally, tumor cells displayed membranous positivity of CD99 (4/4), nuclear positivity of FLI-1 (4/4) and NKX2.2 (4/4), negativity of EMA, GFAP and synaptophysin expression. The histochemical PAS staining showed weak positivity in one case. Fluorescence in situ hybridization (FISH) test using EWSR1 (22q12) dual color break apart rearrangement probe showed positive results in two cases. Results suggest that using a panel of immunohistochemical markers, including NKX2.2, CD99, FLI-1, EMA, GFAP and synaptophysin, combined with the supplementary EWSR1 FISH test, helps to define the diagnosis of meningeal ES/pPNET of CNS.
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Affiliation(s)
- Changshu Ke
- Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Qiuhong Duan
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Hui Yang
- Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Feng Zhu
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Meng Yan
- Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - San-Peng Xu
- Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Sheng Zhou
- Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Feng Wan
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Kai Shu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Ting Lei
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Li-Ming Xia
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
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45
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Jiang AG, Yu H, Gao XY, Lu HY. Primary pulmonary synovial sarcoma presenting with a large lump mass in the left upper mediastinum: A case report. Exp Ther Med 2016; 11:2395-2398. [PMID: 27284326 DOI: 10.3892/etm.2016.3237] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 02/25/2016] [Indexed: 01/27/2023] Open
Abstract
Primary pulmonary synovial sarcoma is a rare lesion that occurs in 0.5% cases of lung malignancies. Chest computed tomography (CT) reveals a heterogeneously enhancing mass in the lobe or hilum of the lungs, frequently calcified and with pleural invasion. Involvement of the mediastinum in the course of primary pulmonary synovial sarcoma, in particular detection of a large mass in the mediastinum as the sole initial imaging manifestation, is extremely rare, which may contribute to a delayed diagnosis or misdiagnosis. The present case report describes an extremely rare case of a patient with primary pulmonary synovial sarcoma presenting with a large mass in the left upper mediastinum. A 59-year-old patient was admitted to the Department of Respiratory Medicine of Taizhou People's Hospital in May 2014, complaining of a persistent cough and blood sputum for 2 weeks. Following admission, a chest CT showed a large mass in the left upper mediastinum. Thoracoscopy was performed and revealed that the left pulmonary artery was engulfed by the mass, and thus surgical resection of the tumor was abandoned. The patient was definitively diagnosed with primary pulmonary synovial sarcoma following the histopathological and immunohistochemical analysis of biopsy specimens obtained via thoracoscopy. Following the final diagnosis, the patient was transferred to the Department of Oncology for chemotherapy treatments with ifosfamide and doxorubicin. Unfortunately, no partial regression was achieved after two rounds of chemotherapy, and the patient was lost to follow-up 3 months after the diagnosis was confirmed. The present case may promote the consideration of primary pulmonary synovial sarcoma in the differential diagnosis of patients who present with a large mass in the mediastinum.
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Affiliation(s)
- Ai-Gui Jiang
- Department of Respiratory Medicine, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Hong Yu
- Department of Pathology, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Xiao-Yan Gao
- Department of Respiratory Medicine, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
| | - Hui-Yu Lu
- Department of Respiratory Medicine, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China
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46
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Abstract
Synovial sarcoma is a malignant mesenchymal tumor with variable epithelial differentiation, which is defined by the presence of a specific t(X;18)(p11.2;q11.2) chromosomal translocation that generates SS18-SSX fusion oncogenes. Synovial sarcoma typically arises within extremity deep soft tissue (particularly around large joints) of young adults, but has been shown to occur at almost any location. When it arises in more unusual sites, such as the abdomen, it can present a significant diagnostic challenge. We describe a case of intraabdominal monophasic synovial sarcoma that immunohistochemically showed strong expression of smooth muscle actin and calponin but only very scanty cytokeratin, and which showed morphologic and immunohistochemical overlap with other spindle cell neoplasms that can arise at this site, such as gastrointestinal stromal tumor and myofibrosarcoma. As correct diagnosis is of clinical and prognostic importance, surgical pathologists should be aware of the potential for synovial sarcoma to occur at a variety of anatomic sites and of its spectrum of immunoreactivity. Synovial sarcoma should be in the differential diagnosis of spindle cell neoplasms with myoid differentiation that do not fall into any definite tumor category, for which there should be a relatively low threshold for performing fluorescence in situ hybridization or reverse transcription-polymerase chain reaction to assess for the specific SS18 gene rearrangement or SS18-SSX fusion transcripts, which remain the diagnostic gold standard.
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47
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Skoda J, Nunukova A, Loja T, Zambo I, Neradil J, Mudry P, Zitterbart K, Hermanova M, Hampl A, Sterba J, Veselska R. Cancer stem cell markers in pediatric sarcomas: Sox2 is associated with tumorigenicity in immunodeficient mice. Tumour Biol 2016; 37:9535-48. [PMID: 26790443 DOI: 10.1007/s13277-016-4837-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 01/11/2016] [Indexed: 12/13/2022] Open
Abstract
The three most frequent pediatric sarcomas, i.e., Ewing's sarcoma, osteosarcoma, and rhabdomyosarcoma, were examined in this study: three cell lines derived from three primary tumor samples were analyzed from each of these tumor types. Detailed comparative analysis of the expression of three putative cancer stem cell markers related to sarcomas-ABCG2, CD133, and nestin-was performed on both primary tumor tissues and corresponding cell lines. The obtained results showed that the frequency of ABCG2-positive and CD133-positive cells was predominantly increased in the respective cell lines but that the high levels of nestin expression were reduced in both osteosarcomas and rhabdomyosarcomas under in vitro conditions. These findings suggest the selection advantage of cells expressing ABCG2 or CD133, but the functional tests in NOD/SCID gamma mice did not confirm the tumorigenic potential of cells harboring this phenotype. Subsequent analysis of the expression of common stem cell markers revealed an evident relationship between the expression of the transcription factor Sox2 and the tumorigenicity of the cell lines in immunodeficient mice: the Sox2 levels were highest in the two cell lines that were demonstrated as tumorigenic. Furthermore, Sox2-positive cells were found in the respective primary tumors and all xenograft tumors showed apparent accumulation of these cells. All of these findings support our conclusion that regardless of the expression of ABCG2, CD133 and nestin, only cells displaying increased Sox2 expression are directly involved in tumor initiation and growth; therefore, these cells fit the definition of the cancer stem cell phenotype.
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Affiliation(s)
- Jan Skoda
- Department of Experimental Biology, School of Science, Masaryk University, Brno, Czech Republic.,Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Alena Nunukova
- Department of Experimental Biology, School of Science, Masaryk University, Brno, Czech Republic
| | - Tomas Loja
- Department of Experimental Biology, School of Science, Masaryk University, Brno, Czech Republic
| | - Iva Zambo
- 1st Institute of Pathologic Anatomy, St. Anne's University Hospital and School of Medicine, Masaryk University, Brno, Czech Republic
| | - Jakub Neradil
- Department of Experimental Biology, School of Science, Masaryk University, Brno, Czech Republic.,Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czech Republic
| | - Peter Mudry
- Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czech Republic
| | - Karel Zitterbart
- Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czech Republic
| | - Marketa Hermanova
- 1st Institute of Pathologic Anatomy, St. Anne's University Hospital and School of Medicine, Masaryk University, Brno, Czech Republic
| | - Ales Hampl
- Department of Histology and Embryology, School of Medicine, Masaryk University, Brno, Czech Republic
| | - Jaroslav Sterba
- Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czech Republic
| | - Renata Veselska
- Department of Experimental Biology, School of Science, Masaryk University, Brno, Czech Republic. .,Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czech Republic. .,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.
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48
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Chemically Induced Oncogenesis in the Peripheral Nervous System Is Suppressed in Congenic BDIX.BDIV-Mss1 and -Mss7 Rats. G3-GENES GENOMES GENETICS 2015; 6:59-65. [PMID: 26530423 PMCID: PMC4704725 DOI: 10.1534/g3.115.021170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Human malignant peripheral nerve sheath tumors (MPNSTs) are highly aggressive soft-tissue sarcomas with a poor prognosis that arise either in the context of neurofibromatosis 1 or sporadically. Inbred BDIX and BDIV rat strains highly susceptible and resistant, respectively, to the development of ethylnitrosourea-induced MPNST enable us to identify, by using methods not applicable in humans, variant alleles involved in the pathways underlying individual MPNST risk. On the basis of a genome-wide association analysis using reciprocal intercrosses of BDIX and BDIV, BDIV alleles of two loci on chromosome 10, Mss1 and Mss7, were predicted to lower the risk of MPNST, the latter locus with a female bias. In this study we confirm the two nonoverlapping loci by exposing two congenic strains, BDIX.BDIV-Mss1 (Mss1) and BDIX.BDIV-Mss7 (Mss7), each carrying a BDIV genomic segment spanning the respective locus, to ethylnitrosourea. Compared with BDIX rats, the rate of MPNST is reduced 6.2-fold and 2.0-fold for Mss1 and Mss7 rats of both sexes, respectively. Although a moderate gain of survival time (30−50 days) is seen in Mss1 rats of both sexes and Mss7 males, Mss7 females survive 134 days longer than BDIX females. BDIV alleles at Mss7 obviously cause a markedly increased intrastrain sex difference regarding survival time in Mss7 compared with BDIX rats. Fine mapping will lead to the identification of allelic variants modulating rat MPNST risk and subsequently to their human counterparts. This is of particular relevance, because so far neither gene nor anonymous sequence variants have been identified that influence the risk of human sporadic Schwann cell malignancy.
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49
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Adamantinoma-like Ewing family tumors of the head and neck: a pitfall in the differential diagnosis of basaloid and myoepithelial carcinomas. Am J Surg Pathol 2015; 39:1267-74. [PMID: 26034869 DOI: 10.1097/pas.0000000000000460] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ewing sarcoma family tumors (EFTs) of the head and neck are rare and may be difficult to diagnose, as they display significant histologic overlap with other more common undifferentiated small blue round cell malignancies. Occasionally, EFTs may exhibit overt epithelial differentiation in the form of diffuse cytokeratin immunoexpression or squamous pearls, resembling the so-called adamantinoma-like EFTs and being challenging to distinguish from bona fide carcinomas. Furthermore, the presence of EWSR1 gene rearrangement correlated with strong keratin expression may suggest a myoepithelial carcinoma. Herein, we analyze a series of 7 adamantinoma-like EFTs of the head and neck, most of them being initially misdiagnosed as carcinomas because of their anatomic location and strong cytokeratin immunoexpression, and subsequently reclassified as EFT by molecular techniques. The tumors arose in the sinonasal tract (n=2), parotid gland (n=2), thyroid gland (n=2), and orbit (n=1), in patients ranging in age from 7 to 56 years (mean, 31 y). Microscopically, they departed from the typical EFT morphology by growing as nests with peripheral nuclear palisading and prominent interlobular fibrosis, imparting a distinctly basaloid appearance. Moreover, 2 cases exhibited overt keratinization in the form of squamous pearls, and 1 sinonasal tumor demonstrated areas of intraepithelial growth. All cases were positive for CD99, pancytokeratin, and p40. A subset of cases showed synaptophysin, S100 protein, and/or p16 reactivity, further confounding the diagnosis. Fluorescence in situ hybridization assays showed EWSR1 and FLI1 rearrangements in all cases. Our results reinforce that a subset of head and neck EFTs may show strong cytokeratin expression or focal keratinization, and are therefore histologically indistinguishable from more common true epithelial neoplasms. Thus, CD99 should be included in the immunopanel of a round cell malignancy regardless of strong cytokeratin expression or anatomic location, and a strong and diffuse CD99 positivity should prompt molecular testing for the presence of EWSR1 gene rearrangements.
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50
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Magro G, Longo FR, Angelico G, Spadola S, Amore FF, Salvatorelli L. Immunohistochemistry as potential diagnostic pitfall in the most common solid tumors of children and adolescents. Acta Histochem 2015; 117:397-414. [PMID: 25881477 DOI: 10.1016/j.acthis.2015.03.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 03/19/2015] [Accepted: 03/25/2015] [Indexed: 12/11/2022]
Abstract
Making a correct diagnosis when dealing with a small round blue cell tumor (SRBCT) of children and adolescents may be relatively straightforward if the tumor arises in the typical clinical setting and the classic pathologic features are all recognizable. However it is widely known that diagnostic difficulties may arise because of: (i) many tumors share overlapping morphological and/or immunohistochemical features; (ii) considerable clinical, pathologic, and immunohistochemical variations do exist; (iii) the increasing use of small biopsies in daily practice makes the diagnosis of these neoplasms more challenging. Accordingly, immunohistochemical analyses are currently mandatory in establishing the correct diagnosis. In this regard there is the need to identify more sensitive and specific immunomarkers useful in the distinction of the several tumor entities. Over the last decades, several markers, such as CD99, WT1 protein, desmin, myogenin, NB84, and INI1 have been identified, providing a considerable help in recognition of the most common solid tumors (ESW/pPNET, rhabdomyosarcoma, neuroblastoma, Wilms' tumor, desmoplastic small round cell tumor; malignant rhabdoid tumor) in children and adolescents. However, at the same time, their unusual, unexpected expression can result in a misinterpretation of the immunohistochemical results, especially by pathologists who are not familiar with oncologic pediatric pathology. Therefore the present review focuses on the potential immunohistochemical pitfalls which should be kept in mind by pathologists to prevent diagnostic errors when dealing with SRBCTs.
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Affiliation(s)
- Gaetano Magro
- Department of Medical and Surgical Sciences and Advanced Technologies, "G.F. Ingrassia", Azienda Ospedaliero-Universitaria "Policlinico-Vittorio Emanuele", Anatomic Pathology Section, University of Catania, Catania, Italy.
| | - Francesca Romana Longo
- Department of Medical and Surgical Sciences and Advanced Technologies, "G.F. Ingrassia", Azienda Ospedaliero-Universitaria "Policlinico-Vittorio Emanuele", Anatomic Pathology Section, University of Catania, Catania, Italy
| | - Giuseppe Angelico
- Department of Medical and Surgical Sciences and Advanced Technologies, "G.F. Ingrassia", Azienda Ospedaliero-Universitaria "Policlinico-Vittorio Emanuele", Anatomic Pathology Section, University of Catania, Catania, Italy
| | - Saveria Spadola
- Department of Medical and Surgical Sciences and Advanced Technologies, "G.F. Ingrassia", Azienda Ospedaliero-Universitaria "Policlinico-Vittorio Emanuele", Anatomic Pathology Section, University of Catania, Catania, Italy
| | - Flavia Francesca Amore
- Department of Medical and Surgical Sciences and Advanced Technologies, "G.F. Ingrassia", Azienda Ospedaliero-Universitaria "Policlinico-Vittorio Emanuele", Anatomic Pathology Section, University of Catania, Catania, Italy
| | - Lucia Salvatorelli
- Department of Medical and Surgical Sciences and Advanced Technologies, "G.F. Ingrassia", Azienda Ospedaliero-Universitaria "Policlinico-Vittorio Emanuele", Anatomic Pathology Section, University of Catania, Catania, Italy
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