An 8-month-old boy is evaluated in hospital for a violaceous region that appears to be growing on the trunk. It was present as a faint mark since birth, but appears to have rapidly grown over the past month. Physical examination shows a 10×14-cm violaceous region on the trunk. Laboratory studies show:
Hemoglobin 15 g/dL
Leukocytes 8,000/μL
Platelets 90,000/μL
Prothrombin time 13 seconds
Partial thromboplastin time 30 seconds
Bleeding time 9 minutes
Which of the following is the most likely explanation for this patient’s findings?
A) Cherry hemangioma
B) Kasabach-Merritt syndrome
C) Pyogenic granuloma
D) Stewart-Treves syndrome
E) Strawberry hemangioma
