Symptomatic Spinal Seeding Metastasis of a Low-grade Oligodendroglioma.

Extracranial metastases from primary brain tumours are mostly caused by high-grade tumours. Metastases from low-grade intracranial tumours are much rare and usually asymptomatic. We present a case of a symptomatic spinal cord compression with intradural extramedullary and diffuse leptomeningeal infiltration observed approximately 51 months after the first diagnosis of a 52-year male patient with WHO Grade 2 oligodendroglioma with temporoparietal localisation. This patient, who had the complaint of weakness in the lower extremity, was operated on due to a thoracic intradural extramedullary mass. The result of the pathological examination came out as WHO Grade 2 oligodendroglioma, and radiotherapy was planned for this seeding metastasis. The patient who experienced refractory seizures died before his radiotherapy treatment was completed. It should be kept in mind that spinal metastases may also be seen in low-grade intracranial tumours without malignant transformation as in the present case. Key Words: Spinal seeding, Spinal metastases, Low-grade oligodendroglioma.