In children and adolescents, ovarian neoplasmas are predominantly germ
cell and sex cord stromal tumors. Carcinomas are quite rare, and, in
particular, endometrioid adenocarcinomas are extremely rare in this ag
e group, We report the case of a 13-year-old girl with FIGO stage I, g
rade I endometrioid adenocarcinoma of the ovary. To our knowledge this
is the first report of an endometrioid carcinoma of the ovary occurin
g in the premenarchal age group and only the second case reported befo
re age 15. Our patient has been treated by conservative surgery withou
t postoperative chemotherapy. Menarche occured 3 months after surgery,
Twelve months after surgery she is free of disease. (C) 1997 Academic
Press.