Gastrointestinal: Adjective referring collectively to the stomach and small and large intestines. The commonly used abbreviation for gastrointestinal is GI. (Outside of medicine, GI can also stand for galvanized iron, general issue or government issue-as in GI Joe).
Before the extracellular matrix is calcified, the tissue is called osteoid (bone-like) tissue. When the concentrations of calcium and phosphate ions rise high enough, they are deposited into the extracellular matrix, and the bone calcifies.
An osteoid osteoma is a benign (non-cancerous), small tumor that usually grows in the long bones of a personâs lower extremities.The thighbone is the most common location, although it can occur in the bones of the hand, and it sometimes occurs in the lower part of the spine.n osteoid osteoma is a benign (non-cancerous), small tumor that usually grows in the long bones of a personâs lower extremities.