Osteoid osteoma: MR imaging revisited

摘要: To assess and compare with computed tomography (CT) the performance of magnetic resonance (MR) imaging in detection osteoid osteoma, determine features this lesion on MR imaging. The prospective CT diagnosis osteoma was determined from original radiology reports. images were assessed retrospectively regard to location signal intensity nidus surrounding bone marrow soft tissue edema. These findings correlated age patient, duration symptoms, drug therapy. Ten patients histologically proven who underwent reviewed. All 10 lesions correctly diagnosed at time None intracortical. Nine intra-articular. Two out five extracortical had false negative preceding study. Signal nidus, marrow, edema variable. Perinidal most pronounced younger no apparent relation reliably demonstrates an which has a variable appearance related its position relative cortex bone. A predominance cancellous osteomas are encountered referred for Marrow vicinity improves conspicuity nidus. may fail diagnose when is location, due lack perinidal density alteration.