Gliomatosis peritonei with endometriosis externa.

A case of gliomatosis peritonei developed 9 years after the removal of an immature ovarian teratoma is reported. An unique association of gliomatosis with endometriosis externa was found without the usual symptoms of endometriosis. The prognosis of gliomatosis is generally excellent and depends on the histological grade of the primary tumor and on the presence of organ metastasis or immature tumor elements in the implants. Pathogenetical aspects of both lesions are discussed briefly.