Pilo-sebaceous cystic ectopy of the uterine cervix.

The infrequent finding of pilo-sebaceous cysts in an uterine cervix is presented. The different histopathogenetic hypothesis and Literature reports are critically reviewed. The histogenesis can be referred to ectodermic embryonal germs which come in the ectopic site following an abnormal cephalic migration. Also stressed is the possibility that neoplasms of the pilo-sebaceous structures could arise in the ectopic site and, thereafter, due to their rarity, might be under-diagnosed at the histology.