Neuropathology Roberta J. Seidman, M.D., Associate Professor. meningioma colloid cyst colloid cyst colloid cyst in third ventricle diffuse astrocytoma schwannoma cerebellopontineangle at eighth cranial nerve mestastasis to dura metastatic melanoma spinal cord in neurofibromatosis with multiple schwannomas spinal cord in neurofibromatosis with multiple schwannomas metastatic tumor