Yadav Savita, Khullar Geeti, Dogra Sunil
Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
J Am Podiatr Med Assoc. 2013 Sep-Oct;103(5):445-7. doi: 10.7547/1030445.
Onychoheterotopia is an uncommon condition in which nail tissue is found beyond the common nail unit of the digits of the hands and feet, most often on the fifth digit of the hand. It represents an extra and independent nail that can be present either congenitally, or more commonly, acquired following trauma. The exact pathogenesis of the congenital type is undetermined. We report a 25-year-old male with multiple congenital ectopic nails of the toes since birth, which has not been reported before.
甲异位是一种罕见的病症，在这种病症中，指甲组织出现在手足指（趾）的常见指甲单元之外，最常见于手部的小指。它表现为一个额外的、独立的指甲，可先天性存在，或更常见的是在创伤后获得。先天性类型的确切发病机制尚不清楚。我们报告一例25岁男性，自出生以来脚趾有多个先天性异位指甲，此前未见报道。
