What type of tumor is a benign growth of nervous tissue called?

A benign growth of nervous tissue is specifically known as a neuroma. This type of tumor arises from nerve tissue and can vary in its presentation, but it is characterized by its non-cancerous nature. Unlike malignant tumors, which invade surrounding tissues and can spread to other parts of the body, a neuroma remains localized and is often found in peripheral nerves, specifically where nerve fibers regenerate.

Understanding the types of tumors can help differentiate neuromas from other forms of growths in the nervous system. Neuroblastoma, for example, is a malignant tumor that usually occurs in children and originates from immature nerve cells. Astrocytoma is a type of tumor that arises from astrocytes, a type of glial cell in the brain, and can be benign or malignant, but it does not specifically describe a benign growth. Schwannoma, while also a benign tumor that arises from Schwann cells covering nerves, is distinct from neuroma because schwannomas can be encapsulated but are specifically associated with the sheath of the nerve rather than just any nerve tissue.