Male 16 years old Reason: Change in pelvic mass s/p 4 cycles of consolidation History: 15 year old with metastatic Ewing's sarcoma The mass around the left iliac bone is slightly decreased in size. When using a similar measuring technique, the medial component of the mass now measures 5.5 x 1.0 x 7.0 cm, previously 6.6 x 1.1 x 8.1 cm, and the lateral component measures 6.3 x 1.0 x 6.0 cm, previously 7.7 x 1.0 x 6.9 cm. The mass again demonstrates avid enhancement and increased T2 signal.Innumerable nearly confluent osseous metastases are again seen within the lower lumbar spine, pelvis and femurs, without substantial interval change. New small volume ascites is noted.
1.Mass around iliac bone, slightly decreased in size compared to the prior examination.2.Innumerable confluent osseous metastatic lesions, without substantial change.3.New small volume ascites.