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.
ï® Osteoid osteoma is a benign osteoblastic tumor which classically produces night pain that. can be relieved by nonsteroidal anti-inflammatory drugs. On physical examination, there. usually is tenderness over the lesion.