What Caused The Mass in This 28-Year-Old's Neck?

Poll

A 28-year-old man presents with a mass in the left neck region. What is your diagnosis?

A 28-year-old man presents with a mass in the left neck region.

Based on the image shown, what is your diagnosis?

A. Melanoma
B. Intramuscular hemangioma
C. Kaposi sarcoma
D. Angiosarcoma