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The morphology and hardness of the nail in two cases of congenital onychoheterotopia
Author(s) -
AOKI K.,
SUZUKI H.
Publication year - 1984
Publication title -
british journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.304
H-Index - 179
eISSN - 1365-2133
pISSN - 0007-0963
DOI - 10.1111/j.1365-2133.1984.tb04710.x
Subject(s) - nail (fastener) , dermatology , medicine , library science , family medicine , engineering , computer science , mechanical engineering
SUMMARY Two cases of congenital onychoheterotopia (ectopic nail) are described. In the first case electron microscopy showed spherical keratohyalin granules, and cytoplasmic desmosomes were seen in the keratinocytes of the nail matrix. The ectopic nail differed from the normal nail in the widening of the angle between the nail matrix and proximal nail fold, and in its radial growth to the skin surface. In the second case, clippings of the ectopic nail were taken and their hardness proved to be very similar to that of normal nails.