Carlsson B, Havel G, Kindblom L G, Knutson F, Mark J
Department of Pathology, Kärnsjukhuset, Skövde, Sweden.
APMIS. 1989 Nov;97(11):1007-12.
A case of primary malignant ovarian ependymoma is described. The course of the tumor disease was extremely prolonged with a 50 year history. The diagnosis is supported by immunohistochemical and ultrastructural evidence of ependymal differentiation. The histogenesis and the origin from a possible preexisting ovarian teratoma are discussed.
