Ischiopubic synchondrosis asymmetry
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At the time the case was submitted for publication Ailbhe M. McDermott had no recorded disclosures.View Ailbhe M. McDermott's current disclosures
1 year history of left hip pain
There is an expansile bubble-like lucency without periarticular reaction or cortical breech along the left inferior pubic ramus at the site of the ischiopubic synchrondrosis most likely reflecting ischiopubic synchondrosis asymmetry. The contralateral side is normal.
This is an important variant to be aware of to prevent the incorrect diagnosis of a bone tumor. In younger children the enlarged ischiopubic synchondrosis is frequently observed bilaterally, but prior to complete ossification in older children unilateral asymmetry is more commonly observed in the non-dominant lower limb.