Specificity and Sensitivity of Vasal Lumen Smear for Diagnosing “Vas Deferenses” After Vasectomy

Histological confirmation of resected specimens of vas deferenses after vasectomy is important, particularly from medicolegal aspects in cases of procedure failure. Non-availability of pathologists in small towns imposes difficulties for surgeons performing vasectomy. Availability of cytologists is more likely, and they can examine the smear of vasal lumen easily for this purpose. We carried out this study in 1998 in Gilan Family Planning Research Center, whether pathological reports of vas deferenses could be were substituted with vas smear. After obtaining 300 smears, all specimens were also sent for pathological examination. The specificity of vas lumen smear in recognizing “vas deferenses” was 100% and the sensitivity was 99.32%. It is recommended that in case of shortage of pathological facilities, cytologic report can be so helpful to confirm the vas deferense.