Subperiosteal iliac hematoma may present acutely in adolescents or chronically in asymptomatic adults.

Clinical presentation

Acute: in adolescents , usually with history of recent fall, giving complaints of pain and limping due to crural nerve compression.

Chronic: incidental finding in asymptomatic adults.

Imaging findings

CT: Chronic hematomas are usually unilateral or bilateral lenticular calcified lesions deep to iliacus muscle.

MRI: Acute hematomas are lenticular lesions deep to iliacus muscle, hyperintense on T1WI and T2WI images. A rim of blooming may be seen on GRE.

Plain Radiographs: calcified lenticular mass on the inner aspect of iliac bone.