69-year-old male patient with a pelvic mass appreciated on CT. ABDOMEN: Limited evaluation as described above.LIVER, BILIARY TRACT: No significant abnormality noted.SPLEEN: No significant abnormality noted.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: The right kidney is atrophic and contains multiple T2 hyperintense lesions, which likely represent cysts; this is presumably related to chronic kidney disease.RETROPERITONEUM, LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: Fluid within the small bowel is non-specific. There is proximal distension of the duodenum up to 4 cm with fluid without obvious obstructing lesion.BONES, SOFT TISSUES: There is a 3.1 x 3.8 x 4.0 cm well-circumscribed, ovoid heterogeneously T2 hyperintense mass noted within the right iliacus musculature. This mass appears to be T1 hyperintense on in phase images and does not demonstrate saturation on T2 fat saturation images; this is suggestive of blood products. A rather well-defined, peripheral T2 hypointense rim may represent hemosiderin. This lesion was not definitively present on wide field coronal T2 images on a MRI of the abdomen from 6/7/2016. Edema type signal is noted within the inferior right iliacus muscle.OTHER: No significant abnormality noted.
1.Within the limitations of the study, a well-circumscribed ovoid mass in the right iliacus musculature is favored to represent a hematoma, particularly given that it was not present on a recent MRI from 6/7/2016. 2.Atrophic right kidney with presumed renal cysts.