Malignant epithelial tumors of the ovary in childhood: a clinicopathological study of 13 cases in Great Britain 1962-1978.

The clinicopathological features of 13 childhood epithelial malignancies of the ovary occurring in Great Britain in the 17-year period 1962-1978 are presented. The majority (10 cases or 77%) were mucinous neoplasms; tumors of borderline malignancy constituted 45% of the total number. These results differ substantially from incidence rates encountered in ovarian neoplasia in adults and suggest that some childhood mucinous neoplasms may be monophyletic teratomas.