Acoustic Neuroma Causes. There are two types of acoustic neuroma: a sporadic form and a form associated with a syndrome called neurofibromatosis type II (NF2). NF2 is an inherited disorder characterized by the growth of noncancerous tumors in the nervous system.
Patients with bladder cancer sometimes have other tumors in these places, so the entire urinary tract needs to be checked for tumors. Invasive versus non-invasive bladder cancer. Bladder cancers are often described based on how far they have invaded into the wall of the bladder:
Breast cancer starts when cells in the breast begin to grow out of control. These cells usually form a tumor that can often be seen on an x-ray or felt as a lump. The tumor is malignant (cancer) if the cells can grow into (invade) surrounding tissues or spread (metastasize) to distant areas of the body.
Chordoma is a rare type of cancer that occurs in the bones of the skull base and spine. It is part of a group of malignant bone and soft tissue tumors called sarcomas. Chordomas account for about 3 percent of all bone tumors and about 20 percent of primary spinal tumors.
Craniopharyngioma is a rare, usually suprasellar neoplasm, which may be cystic, that develops from nests of epithelium derived from Rathke's pouch. Rathke's pouch is an embryonic precursor of the anterior pituitary. Craniopharyngiomas are typically very slow growing tumors.
Lung carcinoid tumors (also known as lung carcinoids) are a type of lung cancer, which is a cancer that starts in the lungs. Cancer starts when cells begin to grow out of control. Cells in nearly any part of the body can become cancer, and can spread to other areas of the body.
Medulloblastoma (/ m ə ˌ d ʌ l oʊ b l æ ˈ s t oʊ m ə /) is the most common type of pediatric malignant primary brain tumor , originating in the part of the brain that is towards the back and the bottom, on the floor of the skull, in the cerebellum, or posterior fossa.
Melanoma is a cancer that begins in the melanocytes. Other names for this cancer include malignant melanoma and cutaneous melanoma. Most melanoma cells still make melanin, so melanoma tumors are usually brown or black. But some melanomas do not make melanin and can appear pink, tan, or even white.
Epithelial ovarian tumors start in the outer surface of the ovaries. These tumors can be benign (not cancer), borderline (low malignant potential), or malignant (cancer). Benign epithelial ovarian tumors. Epithelial ovarian tumors that are benign don’t spread and usually don’t lead to serious illness.