A fifty year old male presents with a lesion on his right
hand. Approximately 2 months prior to presentation, the
patient, who is a dentist and avid boater, first noted the
lesion after hitting his hand when working in his boat’s
engine room. Initially he had a 1 cm erythematous
macular lesion on the dorsum of his right hand at the
5th metacarpal. He believed the lesion was present prior
to the time he struck his hand, and the injury brought it
to his attention.