Rudimentary polydactyly.
A case of rudimentary polydactyly on the radial aspect of the thumb of a 4-year-old male was examined. Histologic examination revealed hyperkeratosis and acanthosis in the epidermis and large numbers of nerve bundles in the dermis. With immunoperoxidase staining for S-100 protein, the nerve corpuscles were positively stained. We think that rudimentary polydactyly is a kind of congenital traumatic neuroma and that the possible cause may be intrauterine amputation.
Chung
J
J
Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Korea.
Nam
I W
IW
Ahn
S K
SK
Lee
S H
SH
Kim
J G
JG
Sung
Y O
YO
D002675:Child, Preschool; D006801:Humans; D008297:Male; D017689:Polydactyly / Q000473:pathology*; D012867:Skin / Q000473:pathology; D013933:Thumb / Q000473:pathology