Fig. 4From: Imaging diagnosis and differential diagnosis of extraskeletal osteosarcomaA 55-year-old woman with EOS in the abdominal cavity. A The mass was irregular in shape, with patchy, coarse-grained calcification or ossification within the mass on CT (red and yellow arrows). B Enhanced scan showing cystic/necrotic areas (blue arrows). C, D Pelvic metastases were found (green arrows)Back to article page