Turret exostosis of the thumb distal phalanx
Thumb distal phalanx swelling for three years.
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Bony growth developed on the ulnar and volar aspects of thumb distal phalanx with a sessile attachment to the periosteum.
Turret exostosis is an abnormal bony growth that develops on the surface of the bone, usually on the dorsal aspect of the proximal or middle phalanx.