64-year-old female with chronic kidney disease and CHF on warfarin for TVR replacement and recent hematoma on MRI of the hip. MRI pelvis recommended for follow-up. The previously seen soft tissue mass in the right iliacus muscle has decreased markedly in size, now measuring approximately 2.5 x 1.5 cm in the transverse dimension and 3.5 cm in the craniocaudal dimension. It is hyperintense to skeletal muscle on both T1 and T2-weighted sequences centrally, with a low signal intensity rim suggestive of an evolving hematoma. We see no additional soft tissue masses. The bone marrow signal intensity is within normal limits. There is a small rounded mass of fluid signal intensity along the right third sacral neural foramen likely representing a Tarlov cyst, appearing similar to the prior study. Mild osteoarthritis affects both hip joints. Mild facet joint osteoarthritis affects the lower lumbar spine resulting in mild narrowing of the spinal canal.
1. Evolving hematoma within the right iliacus muscle which is much smaller in size on the current study than on the prior study.2. Mild osteoarthritis of the hips and lower lumbar spine.