67-year-old female with left posteromedial fascial signal changes. Evaluate for resolution. There is increased signal abnormality along the facia along the posteromedial aspect of the left thigh with associated enhancement on postcontrast sequences which appears significantly decreased in size and extent when compared to the prior examination from 4/21/15. These findings may represent a resolving edema/Morel Lavallee lesion in the correct clinical setting. There is thickening and intermediate signal intensity within the hamstring tendons at their insertion indicating moderate tendinosis. The remainder of the imaged musculature is normal in appearance. There is a 13 mm focus of heterogeneous signal abnormality with internal foci of fluid signal intensity and fluid fluid level on axial images within the vastus medialis muscle belly, appearing similar to the prior study, which may represent a partially thrombosed pseudoaneurysm from a branch of the superficial femoral artery, in the setting of trauma, versus a vascular malformation (series 11 images 52 and 51). This lesion was not definitely seen on prior CT angiogram of the extremities from 8/28/2007. Note is made of an apparent vascular graft from a femoral artery to femoral artery bypass graft which is incompletely imaged.
1. Significant interval decrease in size of the signal abnormality along the posteromedial aspect of the left thigh which may represent resolving edema/ resolving Morel Lavallee lesion in the correct clinical setting.2. 13 mm lesion within the vastus medialis muscle which may represent a pseudoaneurysm or vascular malformation. While this lesion appears similar to the prior examination from 4/21/15, this was not definitely seen on the prior CTA examination of the extremities dated 8/28/2007.