title: Metastatic tumours of the testes.
abstract: Metastatic tumours of the testes are uncommon, making up little more than 2% of all testicular neoplasms. The most frequent primary sites are the lung and prostate. Only rarely do these lesions present clinically either as the first sign of malignant disease or as a complicating factor during the course of known disease. The authors present two cases illustrating both of these occurrences. The first, a man with carcinoma of the common bile duct, initially had a mass in the testicle and the second, a patient with carcinoma of the prostate, had his clinical course complicated by a symptomatic metastasis to the right testis. The authors also reviewed their local autopsy experience and identified 16 more cases. Metastases were grossly visible in 38% (6 of 16). The most frequent primary sites were lung (four cases), stomach (four) and prostate (three). Routes of spread as well as possible explanations for the low incidence are discussed.
mesh_terms: D000230:Adenocarcinoma / Q000556:secondary* / Q000601:surgery; D000368:Aged; D002277:Carcinoma / Q000556:secondary*; D003138:Common Bile Duct Neoplasms / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology; D008297:Male; D011471:Prostatic Neoplasms / Q000473:pathology; D013274:Stomach Neoplasms / Q000473:pathology; D013736:Testicular Neoplasms / Q000473:pathology / Q000556:secondary* / Q000601:surgery; D013737:Testis / Q000473:pathology