Malignant Intracerebral Nerve Sheath Tumor Presenting With Intratumoral Hemorrhage.

Background: Primary central nervous system sarcomas are rare primitive mesenchymal non-meningothelial tumors. Malignant peripheral nerve sheath tumor accounts for 5% of sarcomas, with an incidence of approximately 0.001% and a recognized association with neurofibromatosis type 1.