Definition: Anangioids are a type of brain tumor that develops within an organ called the "brainstem" or the part of the brain responsible for controlling motor functions, such as vision and speech. The term "angioid" comes from Latin and means "tissue." In this context, it refers to blood vessels that form in the brain stem. The term "anangioid" is used specifically to describe these types of tumors, which can be caused by certain factors, including infections or mutations. An angioids are typically benign (non-cancerous) conditions and do not cause significant side effects such as strokes or seizures. However, they may develop into more aggressive tumors if left untreated, leading to complications like damage to brain cells or even death in severe cases.