👉 A chondrofibroma, also known as a fibrous bone cyst or a fibrous osteoma, is a type of benign tumor that occurs in the cartilage between bones. It can appear on any part of the body including the head and neck, but is most commonly found in the spine. The tumor consists of a hard, fibrous structure that surrounds the bones and may grow into the bone itself. This condition is characterized by thin, irregular bands of tissue that are often red or