Subungual extraskeletal chondroma with finger nail deformity: case report.

Ishii, Takayuki; Ikeda, Masayoshi; Oka, Yoshinori · J Hand Surg Am · 2010

case_report · Level V

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Abstract

We report a subungual extraskeletal chondroma with a convex nail deformity originating from the index finger in a 39-year-old man. The tumor was excised and its histopathology showed obvious nuclear pleomorphism. However, the Ki-67 (MIB-1) labeling index was less than 1%, indicating low proliferative activity; it was classified as an extraskeletal chondroma with atypical features. There was no recurrence over a 3-year postoperative period.

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