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J Can Assoc Radiol. 1977 Sep;28(3):187-9.

Bony proliferation of terminal toe phalanges in psoriasis: the "ivory" phalanx.

Abstract

Twenty-eight per cent of our patients with psoriatic arthritis involving the feet demonstrated osseous proliferation and increased radiodensity of the terminal phalanges. This sign, the "ivory" phalanx, is a poorly recognized radiographic manifestation of the disease, but is particularly important in the absence of articular abnormality or of resorption of the tufts. It is almost invariably associated with nail diseases of the same digit.

PMID:
893522
[Indexed for MEDLINE]

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