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A 14 year old girl with fetus in fetu. Ultrasonographic images (Siemens Acuson X 300, 3.5–5.0 MHz, convex probe) demonstrate a large heterogeneous complex mass in the upper abdomen with solid echogenic (white arrow heads) and cystic anechoic (thin white arrow) components with linear calcified structure, resembling a femur (thick white arrow).
