Smith J C, Cranston D, O'Brien T, Guillebaud J, Hindmarsh J, Turner A G
Department of Urology, Churchill Hospital, Oxford, UK.
Lancet. 1994 Jul 2;344(8914):30. doi: 10.1016/s0140-6736(94)91052-9.
Fatherhood after vasectomy is rare. We describe 6 cases of DNA-proven fatherhood after vasectomy in association with persistently negative semen examination. All vasectomy patients and their partners should be counselled about the small possibility of late failure, and warning of failure should be recorded.
输精管结扎术后致孕的情况罕见。我们描述了6例经DNA证实的输精管结扎术后致孕病例，这些病例的精液检查结果持续为阴性。应向所有输精管结扎术患者及其伴侣告知术后晚期失败的微小可能性，并记录失败警示信息。
