Abstract

Fibrothecoma of testis emerges as an exceptionally discerned, sex cord stromal tumour comprised of spindle shaped, ovoid or spherical cells intermingled with quantifiably variable collagen. Sertoli cell or granulosa cell components are absent although minimal aggregates of diverse sex cord cells may be discerned. Mitotic activity is minimal ≤ 5 mitoses per 10 high power fields although up to 10 mitoses per 10 high power fields may be encountered. Generally, focal haemorrhage and necrosis are absent. Cellular density and stromal collagen is variable. Additionally designated as the cofibroma, testicular fibroma or neoplasm of thecoma/fibroma group, testicular fibrothecoma commonly incriminates testis or paratestis.

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