Kaposi sarcoma lesions are typically described as what color and pattern?

• A. Patches with granulation appearance
• B. Red-purple patches and nodules
• C. Blue-gray patches with vesicular lesions
• D. White patches with scaling

Answer: (B)

Kaposi sarcoma is a vascular tumor, so its skin lesions reflect blood-filled channels and ongoing neovascularization. They classically begin as violaceous, red-purple patches on the skin and may progress to plaques and nodules as the disease advances. Therefore describing the lesions as red-purple patches and nodules captures both the characteristic color and the common progression from patch to nodular lesion. Other descriptors don’t fit KS well: granulation-tissue–like patches suggest a different inflammatory process; blue-gray patches with vesicles aren’t typical for KS; white patches with scaling point to leukoplakia or other keratotic dermatoses.