CincyKidsRad

Cincinnati Children's Radiology

Ectomesenchymoma

Axial T2-weighted MRI (image 1), contrast-enhanced CT in soft tissue (image 2) and bone windows (image 3), and ultrasound (image 4) show an ectomesenchymoma (arrow) of the mandible with associated bone destruction (arrowhead) and new bone formation. Ectomesenchymomas are rapidly growing tumors that typically occur in children. They are most common within the head and neck, though they can also arise in the abdomen, pelvis, and extremities.

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