Sertoli cell tumor of the testis is a rare sex-cord stromal tumor composed of cells expressing varying degree of features of fetal, prepubertal or adult Sertoli cells [1]. This type of tumor accounts for less than 1% of all testicular tumors, and is classified into three variants by the World Health Organization Classification, namely Sertoli cell tumor not otherwise specified (NOS), large cell calcifying Sertoli cell tumor, and sclerosing Sertoli cell tumor (SSCT) [1]. SSCT is an extremely rare variant of Sertoli cell tumor, first described by Zukerberg et al. in 1991 [2-8], and only 16 cases with histopathological features have been reported in the English literature [2-8]. Herein, we report an additional case of this extremely rare tumor with detailed immunohistochemical analyses and review of the literature.
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