This is Kaposi's sarcoma (KS). There were forms of KS seen before the AIDS epidemic, but they were uncommon. KS with AIDS is usually seen in homosexual males and is rare in other risk groups. The lesions can start as small reddish to red-purple plaques or patches. Over time, the lesions become nodular and larger and more numerous. If the HIV test is positive, then KS is diagnostic of AIDS.

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