Figure 1. 50-year-old female with retroperitoneal mass. Abdominal ultrasound showing solid, heterogeneous retroperitoneal mass with multiple scattered areas of increased echogenicity and dense posterior shadowing suggestive of foci of calcification.
Figure 3. 50-year-old female with retroperitoneal mass. Contrast-enhanced CT of the abdomen and pelvis showing a large right-sided retroperitoneal soft-tissue density mass with extensive dense as well as arc-like calcific foci and mild heterogeneous contrast enhancement.