Svetlanavodo
Systemic Mastocytosis
A 65-year-old man presented to the internal medicine clinic with a 4-month history of a rash and a 2-month history of diarrhea and unintentional weight loss. Physical examination was notable for a maculopapular eruption on the trunk (Panel A), arms, and legs. Laboratory testing showed normocytic anemia and a serum tryptase level of more than