Fatherhood without apparent spermatozoa after vasectomy.

Smith, J C; Cranston, D; O'Brien, T; Guillebaud, J; Hindmarsh, J; Turner, A G · Lancet · 1994

case_series · Level IV

Where this comes from

Abstract

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.

Medical subject headings