73-year-old female with right iliac area hematoma of unclear acuity. Please compare to 9/2015 scan and evaluate for chronicity. Presents with right hip swelling. BONE MARROW: Heterogeneous bone marrow signal abnormality likely represents residual islands of red marrow.SOFT TISSUES: Again seen is a large loculated heterogeneous collection within the soft tissues of the right hemipelvis interposed between the right gluteus medius and maximus muscles extending medially along the obturator externus and inferiorly along the posterior aspect of the proximal femoral metadiaphysis, measuring 10.0 x 7.7 x 23.9 cm, slightly decreased in size in comparison to the prior study, consistent with the stated history of hematoma. There are multiple associated fluid fluid levels internally.JOINTS: The alignment is anatomic. There is a small amount of fluid within the hips without evidence of a large effusion.ADDITIONAL
Slight interval decrease in size of a heterogeneous collection within the soft tissues of the right hemipelvis consistent with the stated history of hematoma. Follow-up examination to establish resolution/evaluate for interval change is recommended.