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There are changes related to total knee replacement with metallic hardware prosthesis showing metallic beam hardening artifact.
The lower thigh cuts revealed deeply seated intramuscular heterogenous collection at the anteromedial aspect of the lower thigh associated with calcified periosteal reaction of the underlying distal femur.
The collection mainly involves vastus intermedius muscle abutting supra-patellar synovial recess with multiple gaseous foci inside associated with blurring of the surrounding fat planes.