Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12857/116780
Title: Primary seminal vesicle carcinoma. The usefulness of PAX8 immunohistochemical expression for the differential diagnosis
Authors: Posenato, Ilaria 
Caliò, Anna 
Segala, Diego 
Sgroi, Salvatore
Polara, Andrea
Brunelli, Matteo
Martignoni, Guido 
Keywords: Carcinoma;Differential diagnosis;Immunohistochemistry;PAX8;Seminal vesicle
Keywords Plus: PRIMARY ADENOCARCINOMA;UROTHELIAL CARCINOMA;CANCER;TRACT
Mesh headings: Biomarkers, Tumor;Carcinoma;Genital Neoplasms, Male;Immunohistochemistry;PAX8 Transcription Factor;Seminal Vesicles
Secondary Mesh headings: Adult;Aged;Cell Nucleus;Diagnosis, Differential;Humans;Magnetic Resonance Imaging;Male;Middle Aged;Predictive Value of Tests
Issue Date: 2017
Publisher: W B SAUNDERS CO-ELSEVIER INC
Journal: Human pathology 
Abstract: 
Primary seminal vesicle carcinoma is a rare entity whose diagnosis can be achieved by ruling out the main carcinomas that commonly invade the seminal vesicles. Although a panel of immunohistochemical markers (cancer antigen 125, cytokeratin [CK] 7, CK20, prostate-specific antigen, and prostate-specific acid phosphatase) has been proposed as unique for primary seminal vesicle carcinoma, a reliable positive marker is lacking. In this article, we report a case of primary seminal vesicle carcinoma in a 57-year-old man. The tumor was localized to the left seminal vesicle and histologically characterized by papillae lined by broad eosinophilic cells with pleomorphic nuclei. The neoplastic cells expressed cancer antigen 125 and CK7, whereas CK20, prostate-specific antigen, and prostate-specific acid phosphatase were negative. A strong and diffuse nuclear labeling for PAX8 was detected. Because carcinomas of the colon, bladder, and prostate, the main differential diagnosis in this setting, have been reported consistently to be PAX8 negative, this marker may be very useful for a prompt diagnosis of seminal vesicle carcinoma.
URI: http://hdl.handle.net/20.500.12857/116780
ISSN: 00468177
DOI: 10.1016/j.humpath.2017.05.003
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