Grignon D J, Shum D T, Hayman W P
Can J Surg. 1986 Sep;29(5):359-61.
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.
睾丸转移性肿瘤并不常见，占所有睾丸肿瘤的比例略高于2%。最常见的原发部位是肺和前列腺。这些病变在临床上很少作为恶性疾病的首发症状出现，也很少作为已知疾病病程中的并发症出现。作者报告了两例病例，分别说明了这两种情况。第一例是一名患有胆总管癌的男性，最初睾丸出现肿块；第二例是一名前列腺癌患者，其临床病程因右睾丸出现有症状的转移而复杂化。作者还回顾了他们当地的尸检经验，又发现了16例病例。16例中有6例（38%）肉眼可见转移灶。最常见的原发部位是肺（4例）、胃（4例）和前列腺（3例）。文中讨论了转移途径以及发病率低的可能原因。
