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(a) Transverse and (b) sagittal computed-tomography angiography images of the right knee showing a pyomyositis and a popliteal artery pseudoaneurysm of 2.2 × 2 × 1.6 cm surrounded by an abscessed cavity of 3.7 × 3.4 × 2.9 cm in the proximal medial gastrocnemius.
