The Johns Hopkins Comprehensive Brain Tumor Center is one of the world's largest brain tumor research and treatment centers, consisting of the following specialty tumor centers:
 | Acoustic Neuroma Center Acoustic neuromas, also called vestibular schwannomas, are rare, usually slow-growing tumors of the inner ear, specifically of the nerve that connects the ear to the brain (the hearing nerve). |
 | Glioma Center Gliomas are brain tumors arising from brain glial cells. Glioma brain tumors include astrocytomas, oligodendrogliomas and ependymomas. |
 | Meningioma Center Meningiomas are brain tumors that originate in the linings that cover the brain, called meninges. Meningioma brain tumors include convexity meningiomas and skull base meningiomas. |
 | Metastatic Brain Tumor Center Metastatic brain tumors are tumors that begin growing in another part of the body (the primary cancer, including breast cancer metastases, lung cancer metastases, colon cancer metastases, bladder cancer metastases, renal cells, and melanoma), then spread (metastasize) to the brain. |
 | Neurofibromatosis (NF) Center Neurofibromatosis type 1, also called Recklinghausen's disease, Von Recklinghausen neurofibromatosis, and peripheral NF, is a common inherited neurological disorder, affecting 1 in every 3,000 people. Neurofibromatosis type 2 is a rare condition and can cause profound hearing loss. Schwannomatosis is a disorder that presents nerve tumors anywhere throughout the body. |
 | Pediatric Brain and Spinal Cord Tumor Center Brain tumors are the second most common type of cancer in children, accounting for about 21% of childhood cancers. Although less common, spinal cord tumors also occur in children. |
 | Pituitary Tumor Center Pituitary tumors are brain tumors that affect the part of the brain that regulates the body’s hormones. Pituitary tumors include pituitary apoplexy, pituitary adenoma and Sheehan’s syndrome. |
 | Skull Base Tumor Center Skull base tumors are a group of brain tumors that grow along various regions of the bottom of the skull. Skull base brain tumors include chordomas, glomus jugulare, metastatic tumors and schwannomas. |
Find a Johns Hopkins brain tumor center in Maryland.