Can sperm be frozen at the time of a vasectomy reversal?
It is very rare to find large numbers of active sperm at the cut end of the vas deferens during a reversal. It would be possible to expose the epididymis, “nick” a tubule and recover active sperm, but this increases the risk of obstructing the epididymis at the site of the “nick”. For this reason, we generally do not recommend freezing sperm during a vasovasostomy. However, if a vasoepididymostomy is required, freezing sperm becomes quite feasible. During the course of a vasoepididymostomy, the epididymal tubule is “nicked” to check for active sperm. In this setting, it is very reasonable to collect and freeze epididymal sperm.
