Abstract: Circumscribed palmar or plantar hypokeratosis (CPPH) is a new dermatologic disorder that firstly defined Pérez A et al in 2002. Since that time, further cases of CPPH have been reported by different authors in different countries. We report a 69-year-old Turkish woman who presented with asymptomatic, erythematous patches on the thenar region of the left hand and on the second left finger. Skin biopsy showed histological features of CPPH. In this article, it was emphasized that CPPH may be seen more frequently than expected and the clinical and pathological features of this disease with suspected malignant transformation should be known.

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