Transient hip osteoporosis
Persistent long-term right hip pain.
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Right femoral head and neck display abnormal signal intensity, low on T1 and bright on T2 fat sat sequences, without evidence of structural collapse or subchondral fracture.
Mild effusion in right hip joint.
The main differential diagnosis of transient osteoporosis of the hip is avascular necrosis, which shows subchondral abnormal signal or structural collapse.