3例无痛性睾丸肿块病人,用常用方法作精液的细胞学检查,在精液或前列腺按摩液中所有病人都发现癌细胞,最后的病理检查为精原细胞瘤、绒毛膜癌及混合性畸胎癌。睾丸切除精液中不再能找到恶性细胞。作者认为这是简单的非侵入性方法,配合细胞DNA含量的进一步流式细胞测定,对术前睾丸肿块的鉴别诊断有很大的帮助。 3 cases of painless testicular mass patients, commonly used methods for semen cytology, in patients with semen or prostate massage fluid were found in all patients, the final pathological examination for seminoma, choriocarcinoma and mixed deformity Tumor. Testicular resection of semen can no longer find malignant cells. The authors consider this a simple, noninvasive method that, combined with further flow cytometry of cellular DNA content, is of great help in the differential diagnosis of preoperative testicular lumps.