Solitary fibrous tumor/hemangiopericytoma of the penis

Özet

Solitary fibrous tumor/hemangiopericytoma (SFT-HMP) is a rare spindle-cell mesenchymal tumor, thoughtto be of myofibroblastic origin. Penile SFT-HMP was mentioned in the literature in two separate case reportswhich were published in 2015 and 2017. We present the first case of SFT-HMP which is localized on corpuscavernosum of the penis. A 55-year-old man presented to our clinic with a small and gradually growing lesion on his penis for the past year, which recently caused difficulties during sexual intercourse. On physicalexamination; a well-shaped, nodular non-fluctuant, solid, painless mass, measuring 4x4 cm was palpated.Magnetic resonance imaging showed 5x5 cm mass located on the right corpus cavernosa. Under spinal anesthesia, surgical excision was performed. Pathologically, the tumor had an irregular architecture patterns andwas characterized by hypercellular areas separated by thin-walled, branching vessels, lined with a singlelayer of flattened endothelial cells. SFT-HMP rarely occurs in genital tract and penile presentation is amongthe rarest. It should be classified and considered under penile masses, especially if the mass is well circumscribed, painless and slowly growing in nature. After differential diagnosis, surgical excision is mandatory