Clinical Presentation

An adolescent girl with right lower quadrant pain.

(A,B) Axial post-contrast computed tomography images demonstrate a cystic mass in the rectovesical space that has three different attenuation levels: calcium, fluid, and fat (arrows).

Differential Diagnosis

• Ovarian teratoma: The finding of an ovarian mass that contains calcium, fluid, and particularly fat is diagnostic of an ovarian teratoma.