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69-year-old man with gout. Patient presented with swelling and pain in left arm. Coronal volume-rendered CT image shows soft tissue mass posterior to olecranon with amorphous calcification (arrow), consistent with soft-tissue tophus. Tophaceous gout typically presents as juxtaarticular lobulated soft tissue mass, occasionally with calcifications, and has predilection for olecranon and prepatellar regions. Incidental cardiac pacemaker is seen in upper left chest.
