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Ramsey MC, Sabatini PJB, Watson G, Chawla T, Ko M, Sakhdari A. Case Report: Identification of a novel STAT3 mutation in EBV-positive inflammatory follicular dendritic cell sarcoma. Front Oncol 2023; 13:1266897. [PMID: 37965457 PMCID: PMC10640977 DOI: 10.3389/fonc.2023.1266897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023] Open
Abstract
EBV-positive inflammatory follicular dendritic cell sarcoma (EBV+ IFDCS) is an uncommon disease primarily observed in Asia. It is characterized by the development of tumors believed to originate from follicular dendritic cells (FDC). The consistent association between this condition and clonal EBV infection suggests EBV's involvement as an etiological factor. However, diagnosing EBV+ IFDCS can be challenging due to its morphological variability and diverse immunohistochemical staining patterns. The genetic characteristics of EBV+ IFDCS remain insufficiently understood. To address this knowledge gap, we present a case study of a 47-year-old male patient diagnosed with EBV+ IFDCS. We utilized a Next-generation sequencing (NGS) platform to investigate the genetic profile of the tumor cells. We identified a single pathogenic mutation (G618R) in the STAT3 gene. This finding provides valuable insights into the genetic alterations associated with EBV+ IFDCS and potentially contributes to our understanding of the disease's pathogenesis.
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Affiliation(s)
- Megan C. Ramsey
- Hematopathology Department, Toronto General Hospital, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Peter J. B. Sabatini
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Division of Clinical Laboratory Genetics, Laboratory Medicine Program, University Health Network, Toronto, ON, Canada
- Advanced Molecular Diagnostic Laboratory, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | | | - Tanya Chawla
- Joint Department of Medical Imaging, Mount Sinai Hospital, Toronto, ON, Canada
| | - Michael Ko
- Thoracic Surgery, Unity Health Network, St Joseph’s Hospital Site, Toronto, ON, Canada
| | - Ali Sakhdari
- Hematopathology Department, Toronto General Hospital, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
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Ding F, Wang C, Xu C, Tang H. Case report: Hepatic inflammatory pseudotumor-like follicular dendritic cell sarcoma: A rare case and minireview of the literature. Front Med (Lausanne) 2022; 9:1002324. [PMID: 36425103 PMCID: PMC9679012 DOI: 10.3389/fmed.2022.1002324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022] Open
Abstract
Inflammatory pseudotumor (IPT)-like follicular dendritic cell sarcoma (FDCS) is a rare neoplasm referred to as the FDCS variant. Here we report a 66-year-old female patient suffering from hepatic IPT-like FDCS and summarize IPT-like FDCS reported in the literature. The patient presented with obvious abdominal pain without significant laboratory abnormalities and subsequently underwent surgical resection of a hepatic lesion. Postoperative pathological results demonstrated a vascular tissue-rich neoplasm (7.0-cm maximum diameter). The tumor cells expressed CD21 and CD35, and in situ hybridization detected Epstein–Barr virus-encoded RNA (EBER). Metastasis or recurrence was not detected during the 7-year follow-up.
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Affiliation(s)
- Fan Ding
- Center of Gallbladder Disease, East Hospital of Tongji University, Shanghai, China
- Institute of Gallstone Disease, Tongji University School of Medicine, Shanghai, China
| | - Chao Wang
- Department of Radiology, Nanxiang Hospital of Jiading District, Shanghai, China
| | - Chi Xu
- Department of Hepatic Surgery and Liver Transplantation Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Organ Transplantation Institute, Sun Yat-sen University, Guangzhou, China
- Chi Xu,
| | - Hui Tang
- Department of Hepatic Surgery and Liver Transplantation Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Organ Transplantation Institute, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Hui Tang,
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