School ager with a left mandibular mass

CT of myofibroma
Coronal CT without contrast of the face (above left) shows a soft tissue mass adjacent to or arising from the left mandible which on coronal CT with contrast (above right) is seen to be enhancing and well circumscribed. Coronal CT with bone windows (below) better shows the mandibular disruption and destruction caused by the mass.

The diagnosis was myofibroma.