title: Familial occurrence of testicular neoplasms (in cousins).
abstract: Testicular malignancies in closely related family members rarely occur. Only 18 cases have been reported in the literature. Our cases concern two families with testicular tumors occurring in cousins. This is the first such incidence reported. The need for a thorough checkup of other family members is reiterated.
mesh_terms: D000293:Adolescent; D000328:Adult; D002822:Choriocarcinoma / Q000235:genetics*; D004407:Dysgerminoma / Q000235:genetics*; D006801:Humans; D008297:Male; D013724:Teratoma / Q000235:genetics*; D013736:Testicular Neoplasms / Q000235:genetics*