fluid levels in aneurysmal bone cyst of talus

An approximately 2.6 x 2.7 x 2.5 cm expansile multiloculated cystic lesion involving the body of talus at the subchondral aspect of talonavicular articular margin with surrounding perilesional bone marrow edema demonstrating small fluid – fluid levels – consistent with aneurysmal bone cyst (ABC)

Tiny areas of cortical dehiscence at superior and anterior cortex.

The subtalar articular margins are spared.