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HOME > J Pathol Transl Med > Volume 33(4); 1999 > Article
Case Report Solitary Fibrous Tumor of the Scrotum: A case report.
Jung Weon Shim, Jae Y Ro
Journal of Pathology and Translational Medicine 1999;33(4):295-298
DOI: https://doi.org/
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1Department of Pathology, College of Medicine, Hallym University, Seoul 150-071, Korea.
2Ulsan University College of Medicine, Korea.

Solitary fibrous tumor (SFT) is a rare spindle cell neoplasm that usually arises in the pleura and has been recently reported from unusual locations. We present a case of SFT that occurred in the scrotum. The patient was a 38-year-old man who presented with a painless, left, scrotal mass of five years' duration. Scrotal sonography and pelvic CT scan showed a soft-tissue mass of 11 cm in diameter. The resected tumor measured 11 8 7 cm and was well demarcated from the surrounding soft tissue. The cut surface revealed homogenously grayish-white and gelatinous appearance. No hemorrhage or necrosis was found. Microscopically, the tumor showed hypercellular spindle cell areas intermixed with hypocellular areas lying in a myxoid or collagenous stroma. The spindle cells had no mitosis or low mitotic figures, and little or no nuclear atypia. They exhibited a variety of growth patterns, including "patternless" pattern, and a prominent vasculature with hemangiopericytic pattern. Vimentin, CD34, and bcl-2 protein immunoreactivity were observed. Characteristic histologic and immunohistochemical features of this lesion were consistent with SFT. To arrive at a correct diagnosis of this lesion, especially when it occurs in unusual sites, immunohistochemical study including CD34 & bcl-2 protein is required in addition to characteristic histologic features.

JPTM : Journal of Pathology and Translational Medicine