Kaposi Sarcoma as Initial Presentation of HIV Infection.

Context: Kaposi's sarcoma (KS), a vascular tumor that manifests as nodular lesions on the skin and to a lesser extent, the visceral organs, is the most common neoplasm encountered in human immunodeficiency virus (HIV)-infected patients. It consists of an angiosarcomatous change of not only the epithelial and mucous membrane-associated connective tissue in various sites, for example, skin, gastrointestinal system, lungs, and so on, but may also involve non-epithelial organs, such as lymph nodes. Surgical excision is the line of management for the tumor.