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Fig. 2D 68-year-old man with leg mass of gradual onset and history of
tibial fracture and compartment syndrome 30 years previously. Axial CT image
(bone window setting: width, 2000 H; level, 250 H) shows peripheral pattern of
calcification clearly. Mass is abutting lateral aspect of fibula and causing
thinning (C) and complete erosion (D) of adjacent cortex. Healed
mid-diaphyseal tibial fracture is again noted.