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Lobo J, Harik LR, Peyton CC, Morini MA, Zein-Sabatto B, Winokur T, Zotto VD, Magi-Galluzzi C. Solitary fibrous tumours involving the genitourinary tract: a case series in rare locations, highlighting the role of STAT6 immunohistochemistry. Virchows Arch 2024; 484:697-702. [PMID: 37957341 DOI: 10.1007/s00428-023-03694-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/23/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
Solitary fibrous tumour (SFT) is a mesenchymal neoplasm with variable behaviour, very rarely involving the genitourinary (GU) tract. Most reported cases correspond to isolated case reports. STAT6 immunohistochemistry is a more recent and reliable diagnostic marker. The pathology database of two tertiary institutes was searched for SFTs involving the GU tract. STAT6 strong diffuse nuclear staining confirmed the diagnosis in all four cases, and the NAB2::STAT6 fusion was demonstrated by NGS in one case. Two cases were diagnosed in needle biopsy, one involving the prostate and the other involving the seminal vesicle. One case corresponded to a pelvic mass inseparable from and infiltrating the prostate and bladder. The remainder represented an exceedingly rare involvement of the spermatic cord. Involvement by a SFT should be considered in the differential diagnosis of spindle cell lesions involving GU organs. STAT6 strong diffuse nuclear staining is an important ancillary tool, particularly in a biopsy.
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Affiliation(s)
- João Lobo
- Department of Pathology, Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center Raquel Seruca (P.CCC), R. Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal.
- Cancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center Raquel Seruca (P.CCC) & RISE@CI-IPOP (Health Research Network), R. Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal.
- Department of Pathology and Molecular Immunology, ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-513, Porto, Portugal.
| | - Lara R Harik
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Charles C Peyton
- Department of Urology, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Bassel Zein-Sabatto
- Department of Pathology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Thomas Winokur
- Department of Pathology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Valeria Dal Zotto
- Department of Pathology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Cristina Magi-Galluzzi
- Department of Pathology, Heersink School of Medicine The University of Alabama at Birmingham, Birmingham, AL, USA.
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Janik AM, Terlecka A, Spałek MJ, Boye K, Szostakowski B, Chmiel P, Szumera-Ciećkiewicz A, Bobak K, Świtaj T, Rutkowski P, Czarnecka AM. Diagnostics and Treatment of Extrameningeal Solitary Fibrous Tumors. Cancers (Basel) 2023; 15:5854. [PMID: 38136399 PMCID: PMC10742263 DOI: 10.3390/cancers15245854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/07/2023] [Accepted: 12/09/2023] [Indexed: 12/24/2023] Open
Abstract
Solitary fibrous tumors (SFT) are rare mesenchymal neoplasms that account for less than 2% of all soft tissue masses. In the latest WHO 2020 Classification of Soft Tissue Tumors, extrameningeal SFT was listed as intermediate (rarely metastasizing) or malignant neoplasms. Due to the lack of characteristic clinical features, their diagnosis and treatment remain challenging. The pathogenesis of SFT is often associated with the presence of fusions of the NAB2-STAT6 gene on the 12q13 chromosome. Cytoplasmic CD34 positive staining is considerably characteristic for most SFTs; less frequently, factor XII, vimentin, bcl-2, and CD99 are present. A key factor in the diagnosis is the prevalent nuclear location of STAT6 expression. Radical resection is the mainstay of localized SFTs. In the case of unresectable disease, only radiotherapy or radio-chemotherapy may significantly ensure long-term local control of primary and metastatic lesions. To date, no practical guidelines have been published for the treatment of advanced or metastatic disease. Classical anthracycline-based chemotherapy is applicable. The latest studies suggest that antiangiogenic therapies should be considered after first-line treatment. Other drugs, such as imatinib, figitumumab, axitinib, and eribulin, are also being tested. Definitive radiotherapy appears to be a promising therapeutic modality. Since standards for the treatment of advanced and metastatic diseases are not available, further investigation of novel agents is necessary.
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Affiliation(s)
- Anna Maria Janik
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
- Faculty of Medicine, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Anna Terlecka
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
- Faculty of Medicine, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Mateusz J. Spałek
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
- Department of Radiotherapy I, Maria Sklodowska-Curie National Research Institute of Oncology, 02-718 Warsaw, Poland
| | - Kjetil Boye
- Department of Oncology, Oslo University Hospital, 0372 Oslo, Norway;
| | - Bartłomiej Szostakowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
| | - Paulina Chmiel
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
| | - Anna Szumera-Ciećkiewicz
- Department of Pathology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland;
- Diagnostic Hematology Department, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland
| | - Klaudia Bobak
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
| | - Tomasz Świtaj
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
| | - Piotr Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
| | - Anna M. Czarnecka
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland; (A.M.J.); (A.T.); (M.J.S.); (B.S.); (P.C.); (K.B.); (T.Ś.); (P.R.)
- Department of Experimental Pharmacology, Mossakowski Medical Research Institute Polish Academy of Sciences, 02-106 Warsaw, Poland
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A Rare Case of a Solitary Fibrous Tumor of the Spermatic Cord. Case Rep Pathol 2021; 2021:9956305. [PMID: 34094610 PMCID: PMC8164541 DOI: 10.1155/2021/9956305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/11/2021] [Indexed: 01/22/2023] Open
Abstract
Solitary fibrous tumors (SFTs) are rare mesenchymal tumors, originally identified in the pleura. Even though they have subsequently been described in several extrapleural sites, the incidence of SFTs in the spermatic cord is particularly rare. Here, we report a case of a 27-year-old male that presented with a 3-year history of left scrotal swelling. Computed tomography (CT) and ultrasound demonstrated multiple solid, hypoechoic well-circumscribed masses that were separate from the testis. Surgical excision of the mass led to pathologic diagnosis of a solitary fibrous tumor involving the spermatic cord. Solitary fibrous tumors, although rare, are an important differential diagnosis for urogenital tumors.
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Chang TH, Chen M, Lee CC. Solitary fibrous tumor of the scrotum: a case report and review of the literature. BMC Urol 2019; 19:138. [PMID: 31888599 PMCID: PMC6937639 DOI: 10.1186/s12894-019-0573-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 12/22/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Solitary fibrous tumor (SFT) is a rare soft tissue tumor originally reported in the pleura. Although it has been reported in various extra-pleural sites, the occurrence of SFT in the scrotum is extremely rare. Herein, we present a 48-year-old man who had scrotal SFT. There are very few reported cases of genitourinary SFTs, this is only the fifth report of SFT of the scrotum in the English medical literature. CASE PRESENTATION In this study, we report on a 48-year-old man who presented with a 5 × 8 cm scrotal mass between his testes. Physical examination revealed a 4.7 × 8.5 cm lobulated tumor mass located between his testicles. Surgical excision of the tumor with scrotal approach was done and pathology reported a SFT. The patient was alive without tumor recurrence or distant metastasis during ongoing follow-up for 9 months post-operatively.. CONCLUSION Scrotal SFTs are very rare and only five cases have been reported in English literature to date. Treatment often involves surgical resection, and a definite diagnosis is made with the help of immunohistochemistry. The current general consensus for the management of SFTs is long-term follow-up after surgical excision of the tumor.
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Affiliation(s)
- Tsung-Hsin Chang
- Department of Urology, Mackay Memorial hospital, No.92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist, 10449, Taipei City, Taiwan (Republic of China).,Mackay Medical College, No.46, Sec. 3, Zhongzheng Rd., Sanzhi Dist, 252, New Taipei City, Taiwan (Republic of China)
| | - Marcelo Chen
- Department of Urology, Mackay Memorial hospital, No.92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist, 10449, Taipei City, Taiwan (Republic of China).,Mackay Medical College, No.46, Sec. 3, Zhongzheng Rd., Sanzhi Dist, 252, New Taipei City, Taiwan (Republic of China)
| | - Chih-Chiao Lee
- Department of Urology, Mackay Memorial hospital, No.92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist, 10449, Taipei City, Taiwan (Republic of China). .,Mackay Medical College, No.46, Sec. 3, Zhongzheng Rd., Sanzhi Dist, 252, New Taipei City, Taiwan (Republic of China).
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Jiang S, Yang Y, Mo C, Chen L, Qiu S, Huang B, Chen J. Localized giant solitary fibrous tumor of the scrotum: a rare case report and literature review. J Int Med Res 2019; 47:5802-5808. [PMID: 31452410 PMCID: PMC6862882 DOI: 10.1177/0300060519869140] [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] [Indexed: 11/17/2022] Open
Abstract
Background A solitary fibrous tumor (SFT) is a fibroblastic mesenchymal tumor initially thought to originate from the pleura but that may arise at almost any anatomic site. It is mostly benign, and surgical resection is usually the best treatment option. An SFT involving the scrotum is extremely rare. Case presentation: We herein report an uncommon case of a 22-year-old man who presented with a huge asymptomatic scrotal mass that had begun growing 3 years before presentation. Contrast-enhanced computed tomography revealed a heterogeneous, well-circumscribed scrotal mass with soft tissue density. No invasion of the surrounding organs, distal metastasis, or lymph node swelling was present. Complete resection of the mass was successfully performed. The specimen was a 14.5 × 12.0 × 9.5 cm encapsulated tumor that weighed 970 g. After pathological analysis, we confirmed the diagnosis of SFT. This diagnosis was based on clinical findings, histological morphology, and immunohistochemistry. No recurrence or metastasis was observed during a 3-year follow-up. Conclusion SFTs have an unpredictable clinical course, and they are difficult to diagnose and easy to misdiagnose. A scrotal location is extremely rare. Complete resection of the mass is the treatment of choice and is associated with a high success rate and low recurrence rate.
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Affiliation(s)
- Shuangjian Jiang
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yun Yang
- Department of Anesthesia Surgery Center, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Chengqiang Mo
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Lingwu Chen
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Shaopeng Qiu
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Bin Huang
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Junxing Chen
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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Essid MA, Bouzouita A, Blel A, Saadi A. Inguinal Solitary Fibrous Tumor: A Case Report. Perm J 2019; 23:18-236. [PMID: 31314717 DOI: 10.7812/tpp/18-236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION A solitary fibrous tumor (SFT) is a rare mesenchymal neoplasm that may occur in a wide range of sites, more commonly in the pleura. We report a well-documented case of an SFT with malignant histology arising in the inguinal region. CASE PRESENTATION A 59-year-old man, with an unremarkable medical history, presented with a slow-growing painless mass in the left side of the inguinal region, which he had ignored for 3 years. On clinical examination, there was an indurated, irreducible, mobile, and painless mass in the left side of the inguinal area. Magnetic resonance imaging and computed tomography results revealed a 15-cm mass made up of soft tissue and with nonspecific radiologic aspect. The tumor was totally excised, and the results of the pathologic examination concluded it was an SFT. DISCUSSION The aim of our case report is to present a rare extrapleural localization of an SFT. Although its radiologic features are not specific, SFT should be considered in the differential diagnosis of inguinal masses.
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Affiliation(s)
- Mohamed Ali Essid
- Department of Urology, Charles Nicolle University Hospital of Tunis, Tunisia
| | | | - Ahlem Blel
- Department of Pathology, Charles Nicolle University Hospital of Tunis, Tunisia
| | - Ahmed Saadi
- Department of Urology, Charles Nicolle University Hospital of Tunis, Tunisia
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Marquez CP, Zhang H, Goodrum J, Sreshta JN, Afrouzian M. Florid Proliferation of Hyalinized Vessels in a Spermatic Cord STAT6 Positive Solitary Fibrous Tumor and Its Potential Clinical Implications. Case Rep Pathol 2018; 2018:7462032. [PMID: 30050715 PMCID: PMC6046177 DOI: 10.1155/2018/7462032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/23/2018] [Indexed: 01/30/2023] Open
Abstract
A solitary fibrous tumor (SFT) arising in the paratesticular region is a rare event. Typically most SFTs present as a lung mass and have a characteristic microscopic appearance. Although uncommon, SFTs may present at just about any anatomical site. Here we present a case of a SFT arising along the right spermatic cord, with histologic features mimicking a cellular angiofibroma. We describe the diagnostic immunohistochemical markers useful for arriving at its diagnosis. We also summarize our current understanding of the structural and molecular features that make up SFTs and discuss how these features may help us better understand the pathophysiology of pluripotent mesenchymal stem cell differentiation.
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Affiliation(s)
| | - Haiyan Zhang
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA
| | - Jason Goodrum
- Department of Surgery, Division of Urology, University of Texas Medical Branch, Galveston, TX, USA
| | - J. Nicholas Sreshta
- Department of Surgery, Division of Urology, University of Texas Medical Branch, Galveston, TX, USA
| | - Marjan Afrouzian
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA
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Lin X, Xiang Y, Shi H, Zhang F. Primary intrapulmonary solitary fibrous tumours. Oncol Lett 2018; 15:3653-3661. [PMID: 29467886 PMCID: PMC5796318 DOI: 10.3892/ol.2018.7798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 09/18/2017] [Indexed: 01/30/2023] Open
Abstract
Due to the extreme rarity of primary intrapulmonary solitary fibrous tumours (SFTs), their clinical course, imaging characteristics, diagnosis, treatment and prognosis are poorly understood. The present study therefore assessed the diagnosis and management of primary intrapulmonary SFTs and systematically reviewed previously reported cases in the literature. A total of 5 patients who underwent resection for primary intrapulmonary SFTs were enrolled in the present study and their clinical course, tumour characteristics, management and survival were assessed in this retrospective study. Relevant studies regarding primary intrapulmonary SFTs were searched using PubMed and tumour characteristics, clinicopathologic features, therapeutic strategy and survival outcomes were reviewed. Of the 5 cases, all were males, with a mean age of 57.6 years (range, 37-68 years). All patients were asymptomatic and were identified incidentally on routine computed tomography examination. A total of 3 patients underwent thoracotomy and 2 patients underwent video-assisted thoracoscopic surgery. All tumours were completely resected. Postoperative haemorrhage occurred in 1 patient and he received surgical intervention for haemostasis. The average hospital stay was 15 (4-22) days, and no mortality occurred. The mean length of the postoperative follow-up was 37.6 (1-67) months. One patient was lost to follow-up, and 4 patients were asymptomatic. A total of 19 studies were identified from database searches. They included a total of 45 patients: Twenty-three males and 22 females (mean age, 59.4 years; range, 7-81 years). A total of 12 patients were asymptomatic, and pain and coughing were the major symptoms. Five, one, two, four, and 17 tumours occurred in the right upper lobe, right middle lobe, right lower lobe, left upper lobe and left lower lobe, respectively. A total of 39 patients underwent surgery, 1 patient underwent radiotherapy, and 1 patient underwent radiofrequency ablation. A total of 22 patients were followed up and the mean length of the postoperative follow-up was 48 (1-168) months. One patient was diagnosed with chest wall metastases, and 5 patients succumbed to mortality. To conclude, primary intrapulmonary SFTs are extremely rare and typically identified incidentally. The present findings indicated that the left lower lobe was the most common site location and complete surgical resection is a safe and effective treatment.
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Affiliation(s)
- Xia Lin
- Department of Cardiothoracic Surgery, Lishui Center Hospital, Lishui, Zhejiang 323000, P.R. China
| | - Yingming Xiang
- Department of Cardiothoracic Surgery, Lishui Center Hospital, Lishui, Zhejiang 323000, P.R. China
| | - Hongcan Shi
- Department of Cardiothoracic Surgery, Clinical College, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Fangbiao Zhang
- Department of Cardiothoracic Surgery, Lishui Center Hospital, Lishui, Zhejiang 323000, P.R. China
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