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KMID : 0363219970350020379
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Korean Journal of Dermatology
1997 Volume.35 No. 2 p.379 ~ p.382
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Case of Skin Tag Like Preaxial Polydactyly
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Abstract
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Polydactyly is the most common congenital anomaly of the upper limb. Polydactyly is classified as preaxial polydactyly(thumb), central polydactyly(index, middle and ring fingers), and postaxial polydactyly(little finger) by the site of the extra
digit.
A 3-day-old female newborn had a 1.5×1.0cm sized flesh colored pedunculated sac like mass on the proximal phalanx of her right thumb since birth. A roentgenogram on the hand revealed no bony abnormalities of the digit and the mass contained no
bony
structures. The stalk of the mass was cut by the CO2 laser. On histopathological examination, a cartilage structure was found in the loosely arranged, edematous dermis and the overlying epidermis was flattened. The clinical and histological
findings
support the diagnosis of preaxial polydactyly.
We report this interesting case of preaxial polydactyly with a review of the literature. (Kor J Dermatol 1997;35(2) : 379∼382)
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