Clear cell carcinoma of the ovary with colony-stimulating-factor production. Occurrence of marked granulocytosis in a patient and nude mice.

A case of clear cell carcinoma of the ovary with colony-stimulating-factor (CSF) production is presented. Granulocytosis (54,200/mm3) of unknown cause was observed in a patient at the terminal stage of the clinical course. This tumor was successfully heterotransplanted into athymic nude mice, and transplantable tumor line was designated as OCL-1. OCL-1 tumor reproduced granulocytosis up to 640,000/mm3 in nude mice, and CSF production was demonstrated by colony-forming assay using tumor extract and mouse bone marrow cells in vitro. This is the first report that describes the case of CSF-producing clear cell carcinoma of the ovary and its heterotransplantation in nude mice.