Solitary Mastocytoma on the Palm

Abstract
We report a solitary mastocytoma with a recurrent tense bulla on the palm of a 4‐month‐old male infant. Histologically there were numerous mast cells infiltrating the dermis. The bulla subsided without treatment in 2 weeks, remaining an oval reddish patch. The present case shows that solitary mastocytoma can occur on the palm, but to our knowledge, this site is unusual.

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