Yolk sac and allied tumours of the ovary

Abstract
A review is presented of the histological appearances of 38 yolk sac tumours of the ovary and four so‐called embryonal carcinomas together with the associated clinical features. It is suggested that these neoplasms belong to a single taxonomic group of embryonal ovarian tumours differing only in the concomitant types of differentiation. One yolk sac tumour occurred in an individual of 46 XY chromosome constitution and another in a patient with a gonadoblastoma in the contralateral ovary. The value of post‐operative serial assays of serum AFP is stressed.