Female hydrocele of canal of nuck.

Hydrocele of the canal of Nuck is a very rare condition in females. The processus vaginalis within the inguinal canal forms "the canal of Nuck" in females, homologous to the processus vaginalis in males. Failure of obliteration of the processus vaginalis results in either a direct or an indirect inguinal hernia or if a sac of serous fluid is retained, it forms a hydrocele. Very little has been reported on this condition in the literature. We present a case of hydrocele of canal of Nuck in an 8-year-old female.