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Nocardiosis in HIV-positive patients: an autopsy study in West Africa
S B Lucas1, A Hounnou, C Peacock
1Department of Histopathology, University College London Medical School, UK.
Background:
There are many reports of nocardiosis associated with HIV infection in industrialized and developing countries, but its true prevalence is unknown.
Materials And Methods:
An autopsy study was performed of HIV-positive and HIV-negative patients dying on the general medical wards of a large hospital in Abidjan, Ivory Coast, in 1991.
Results:
247 HIV-positive adult cadavers were examined. 10 (4%) had nocardiosis of the lung, of whom 6 showed disseminated disease. 8 patients had one or more AIDS-defining pathologies, and 5 had nocardiosis as the main cause of death. Pulmonary tuberculosis was found in 87 cadavers (35%), giving a ratio of pulmonary nocardial to tuberculous disease of 1:9. No nocardiosis was seen in 42 HIV-negative cadavers.
Conclusions:
This is the highest recorded prevalence of HIV-associated nocardiosis in a representative sample. The prevalence of nocardiosis varies geographically, and in zones where HIV-associated tuberculosis is common, it is possible that some patients diagnosed as smear-negative pulmonary tuberculosis actually have nocardiosis. A revised strategy of sputum examination with gram stain is suggested to detect nocardia.