A Rare Case of a Solitary Fibrous Tumor of the Spermatic Cord

Abstract

Solitary fibrous tumors (SFTs) are rare mesenchymal tumors, originally identified in the pleura. Even though they have subsequently been described in several extrapleural sites, the incidence of SFTs in the spermatic cord is particularly rare. Here, we report a case of a 27-year-old male that presented with a 3-year history of left scrotal swelling. Computed tomography (CT) and ultrasound demonstrated multiple solid, hypoechoic well-circumscribed masses that were separate from the testis. Surgical excision of the mass led to pathologic diagnosis of a solitary fibrous tumor involving the spermatic cord. Solitary fibrous tumors, although rare, are an important differential diagnosis for urogenital tumors.

Figure 1

CT scan of the abdomen and pelvis revealed a large lobulated mass in the left scrotum.

Figure 2

Hematoxylin and eosin stain demonstrating a patternless spindle cell neoplasm (×10 magnification).

Figure 3

CD34 IHC stain demonstrating strong diffuse positivity (×10 magnification).

Figure 4

STAT6 IHC stain demonstrating strong diffuse positivity (×20 magnification).