Title |
Primary follicular dendritic cell sarcoma of the urinary bladder: the first case report and potential diagnostic pitfalls
|
---|---|
Published in |
Diagnostic Pathology, April 2017
|
DOI | 10.1186/s13000-017-0625-4 |
Pubmed ID | |
Authors |
Guang-Jie Duan, You-Li Wu, Hui Sun, Lang Lang, Zhi-Wen Chen, Xiao-Chu Yan |
Abstract |
Extranodal follicular dendritic cell sarcoma (FDCS) is a very rare malignancy with a variable clinical course. It is often not considered and has the potential to result in a misdiagnosis of other common sarcomas or sarcomatoid carcinomas. This is particularly true with the preoperative biopsy specimen, in which the tissue sample is often small. A case of FDCS in a 63-year-old woman, arising in the urinary bladder, a previously unreported site, is described. The patient presented with the typical clinical symptoms of a bladder cancer, and the morphology of the tumor was similar to a lymphoepithelioma-like carcinoma, ultimately resulting in it being misdiagnosed. The patient received radical cystectomy, without further radiotherapy or chemotherapy. Two years after operation, a metastatic tumor to the lung was found. The mass of the right main bronchus lumen was frozen and resected through bronchoscopy, and radiotherapy was performed. The patient has lived with the tumor since then. This paper presents the first FDCS occurring in the urinary bladder with metastasis to the lung and emphasizes potential diagnostic pitfalls. |
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