Dentro de la patología tumoral excepcional del testículo y paratestículo figuran los tumores de estirpe epitelial común, que aunque de histogénesis discutida se acepta que derivan de restos müllerianos o de diferenciación mesotelial de la vaginal. Guardan estrechas similitudes con sus equivalentes ováricos y en general, se les atribuye buen pronóstico debido a su carácter bordeline o de bajo potencial maligno, pero se precisa de más experiencia con estos raros tumores para evaluar su potencial biológico.
Within the exceptional tumoral pathology of the testis and paratesticular region are the common epithelial type tumors. Although, its histogenesis is under discussion, it has been interpreted as arising from the remnants of the müllerian duct, or from the mesothelium of the tunica vaginalis differentiating in a müllerian direction. Similarities with homologous ovarian tumors are well recognized and in generally we accept a good pronostic due to its low malignant potential or bordeline type, more experience with these uncommon lessions is necessary to evaluate their biologic potential.
