Ischiopubic synchondrosis asymmetry (van Neck-Odelberg disease)

Case contributed by Bahman Rasuli
Diagnosis almost certain

Presentation

Chronic right hip pain

Patient Data

Age: 10 years
Gender: Female

Anteroposterior pelvic radiograph shows enlargement of the right ischiopubic synchondrosis resembling an expansile bone mass with irregular edges.​

Case Discussion

Ischiopubic synchondrosis asymmetry (van Neck-Odelberg disease) is the atypical ossification of the junction between the inferior ischium and pubic ramus. Radiological features may mimic stress fracture, neoplasm or osteomyelitis. With skeletal maturation, it becomes thinner and then obliterates, like all synchondroses.

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