A Case of Congenital Ectopic Nails on Bilateral Little Fingers

Abstract

Congenital ectopic nails are a rare anomaly, but we observed a case of a 43-year-old woman with ectopic nails at the tips of her bilateral little fingers. On X-ray, the distal phalanx of the each little finger appeared depressed. We surgically removed the ectopic nails. One year and 6 months later, no relapse had occurred. The histopathological examination revealed undifferentiated nail tissue including nail, nail matrix, and nail epithelium.

Congenital Ectopic Nails Reconstructed with Local Skin Flaps

“…A patient was reported with an ectopic nail on the radial border of the thumb, which could be considered to be a rudimentary form of polydactyly (2). Similar types of nail deformity have been reported as a claw-like finger by Egawa There are two cases reported previously in whom ectopic nails appeared on both hands similarly to our case, and ectopic nails were present on little fingers in all of these cases (12,13).…”

Posttraumatic Ectopic Nail: Case Report

“…8,15 Congenital ectopic nail also may appear spontaneously without any anomaly or associated syndrome. [1][2][3][4][5][6]9 The small finger is involved the most frequently although other fingers, toes, and extradigital locations have been described. 10 -12 The pathogenesis of congenital ectopic nail has not been clarified.…”

“…Although rare, congenital ectopic nails have been described widely in the literature [1][2][3][4][5][6][7][8][9][10][11][12] ; however, only 2 cases of posttraumatic ectopic nail have been published previously. 13,14 Case Report year-old boy was admitted to the emergency room at our hospital with a soft-tissue infection on the dorsal aspect of the distal interphalangeal joint of the right small finger.…”

Ectopic plantar nail: a report of two cases

“…Most of the cases of this abnormality have been observed in Japan. In the literature, almost 40 cases have been described since the report by Egawa, 10 of which the majority are on the fingers (40 localizations in 34 patients) and mostly of the palmar type; the V digit is the most involved and sometimes bilaterally 11 (32 localizations in 26 patients), followed by the IV digit (three cases), the I and III digits (two cases, respectively), and the II digit (one case). Toes are involved more rarely (seven localizations in four patients) with three cases of the III digit and two cases each of the II and IV digit.…”