Conditions Glioma, Glioblastoma & Astrocytoma Glioblastoma is a cancer of the brain that’s difficult to treat because it invades the normal brain structure. Learn More at PNI Meningioma Meningiomas are the most common benign brain tumor although up to 10% can exhibit more aggressive growth patterns. Learn More at PNI Metastatic Brain Tumors Metastatic brain tumors (also known as secondary brain tumors) arise from a cancer from another part of the body and occur in 10 – 30% of cancer patients. Learn More at PNI Schwannoma (Trigeminal and Vestibular) Schwannoma (Trigeminal & Vestibular) tumors are typically benign and arise from the nerve sheath (covering) of cranial nerves along-side the cerebellum and brainstem. Learn More at PNI Craniopharyngioma Craniopharyngiomas are benign brain tumors that arise near the Pituitary Gland and Pituitary Stalk and are typically both cystic and solid in structure. Learn More at PNI Chordoma Chordoma are locally invasive slow growing malignant tumors that arise from the remnant of the primitive notochord. Learn More at PNI Colloid Cyst Colloid Cyst are relatively uncommon benign cysts that arise within the fluid filled regions of the brain, the ventricles. Learn More at PNI Epidermoid Cyst Epidermoid Cyst are relatively uncommon benign cysts or tumors that arise from stratified squamous epithelium along the surface of the brain. Learn More at PNI Hemangioblastoma Hemangioblastoma are relatively uncommon benign tumors that are comprised of blood vessels and typically arise in the cerebellum, but can also occur in the brainstem and spinal cord. Learn More at PNI Intraventricular Tumors The ventricles of the brain are fluid-filled structures that produce the cerebrospinal fluid that bathes the brain and spinal cord. Learn More at PNI Olfactory Neuroblastoma (Esthesioneuroblastoma) Olfactory neuroblastomas (ONBs) are rare malignant tumors that arise from the olfactory nerve (sense of smell) and extend into the nasal cavity. Learn More at PNI Pineal Regional Tumors The pineal gland lies deep within the brain and regulates circadian rhythm. Occasionally, tumors or cysts can arise from this gland which may require surgery, radiation or chemotherapy. Learn More at PNI Spinal Cord Tumors Spinal cord tumors arise in the spinal cord itself or adjacent to the spinal cord and can occur in the cervical, thoracic or lumbar regions. Learn More at PNI