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Fig 1. CT images of the vertex calvaria. A, Axial CT image (2.5-mm section thickness) demonstrates irregular bone destruction involving the calvaria. The outer cortex is predominantly involved. Irregular channel-like areas of bone destruction are best demonstrated in the vertex lesion (arrow). B, 3D volume-rendered image (using 2.5-mm reconstructed images) demonstrates the irregular worm-eaten nature of the destructive lesions, characteristic of syphilitic osteomyelitis. (arrows).
