Intramedullary spinal cord germinoma: case report. A case of intramedullary spinal cord germinoma within the conus medullaris, with lumbago and pain in the lower extremities, is presented. The intramedullary spinal cord germinoma was determined by a biopsy specimen. After local irradiation of 50 Gy, the tumor markedly decreased in size and clinical symptoms disappeared. 