Ectopic vaginal trophoblast in association with a partial mole.

A case of ectopic vaginal trophoblast in association with a blighted ovum showing hydropic degeneration is presented. This combination satisfied the histological criteria of Szulman and Surti for inclusion as a partial mole. Subsequent follow-up revealed non-progression of the condition. The problems of obtaining a satisfactory classification for proliferative trophoblastic lesions are outlined.