Myofibroblastoma of the tunica testis: evolving phase of so-called fibrous pseudotumor?
A collagen-rich stromal tumor attached to the testicular tunica albuginea of a 22-year-old male is reported. Immunocytochemical and ultrastructural characterization revealed a predominant population of myofibroblasts, an as yet unrecognized observation in tumors arising from testicular tunics. The possible relationship with so-called fibrous pseudotumor (nodular fibrous proliferation) is discussed. The myofibroblastic nature of the cell population would support the hypothesis of a reactive contractile process if one accepts this tumor as an evolving phase of fibrous pseudotumor.
Bégin
L R
LR
Department of Pathology, McGill University, Montreal, Quebec, Canada.
Frail
D
D
Brzezinski
A
A
D000328:Adult; D005347:Fibroblasts / Q000648:ultrastructure; D006801:Humans; D007889:Leiomyoma / Q000473:pathology*; D008297:Male; D008854:Microscopy, Electron; D013736:Testicular Neoplasms / Q000473:pathology*