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Malformations of the index nails
Author(s) -
Hussein T. P.,
Brandt H. R. C.,
Gabbi T. V. B.,
Nico M. M. S.
Publication year - 2009
Publication title -
clinical and experimental dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 78
eISSN - 1365-2230
pISSN - 0307-6938
DOI - 10.1111/j.1365-2230.2008.03037.x
Subject(s) - medicine , nail (fastener) , phalanx , index finger , radiography , index (typography) , dysplasia , anatomy , surgery , pathology , materials science , world wide web , computer science , metallurgy
Summary We report a 52‐year‐old woman with micronychia of the index fingers. Radiographic examination revealed a Y‐shaped bifurcation of the distal phalanx of both index fingers. She was diagnosed with congenital onychodysplasia of the index fingers (COIF) or Iso–Kikuchi syndrome. COIF is a rare condition characterized by a variety of nail dysplasia of the index fingers. Five criteria characterize COIF: congenital occurrence, unilateral or bilateral index finger involvement, variability in nail appearance, hereditary involvement and frequently associated bone abnormalities. Micronychia, polyonychia, anonychia, hemionychrogryphosis and malalignment are the observed index finger defects. Most cases have been described in Japan, and to our knowledge, this is the first case of COIF reported in South America.