Asymptomatic Solitary Pulmonary Nodules Due to Cryptococcus neoformans in Patients Infected with Human Immunodeficiency Virus

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Abstract
We report the cases of three HIV-positive patients with solitary pulmonary nodules caused by Cryptococcus neoformans. Although human infection with C. neoformans occurs via the respiratory tract, isolated pulmonary infection in HIV-positive patients, in contrast with HIV-negative patients, has been thought to be relatively rare. When isolated pulmonary disease in mv -infected patients has been described, most of the patients have been symptomatic (symptoms have included fever, cough, and dyspnea). In addition, these patients have had diffuse interstitial infiltrates, alveolar infiltrates, or nodular infiltrates that have often been associated with hilar adenopathy and occasionally with pleural effusions. None of the patients in the previously reported series have had lesions described as small, asymptomatic, isolated pulmonary nodules.

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