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Within the subcutaneous fat overlying the proximal medial tibia there is a cystic mass with fluid-like signal which demonstrates peripheral and septal enhancement. There is minimal edema surrounding this lesion. A small, fluid-signal tract can be seen coursing from the inferior aspect of the lesion to the infrapatellar bursa. This lesion appears unchanged from the exam one year prior.
Fluid is observed within the deep infrapatellar bursa with a moderate amount of adjacent edema in Hoffa's fat pad which is new from the prior exam, and appear to be related to fluid dissecting from the ACL/anterior root of the medial meniscus into this space and then on to the previously described fluid collection.
There is a minimal amount of edema deep to the distal iliotibial (IT) band.
Intrasubstance degeneration of posterior horn of the medial meniscus is noted, without a surface tear.