[Primary lung Kaposi sarcoma associated to AIDS in a heterosexual drug addict man].

A case of lung Kaposi sarcoma (KS) in the absence of cutaneomucosal lesions was observed in a 30-year-old heterosexual male with AIDS and a history of intravenous drug addiction. Both chest X-ray and CT scanning disclosed a diffuse nodular pattern in lungs, whereas endoscopy failed to demonstrate endobronchial damage. Cytological examination of the sample taken by transthoracic lung puncture proved compatible with primary KS, a rare neoplasia in heterosexual male drug addicts with AIDS.