[Lymph node dissemination of a serious Pneumocystis carinii respiratory infection in AIDS: histopathological and ultrastructural aspects].

A case report of isolated lymph node extension of atypical respiratory Pneumocystis carinii infection which occurred in an HIV-infected patient undergoing aerosolized pentamidine prophylaxis is presented with its histopathological and ultrastructural features. AIDS-associated extrapulmonary and disseminated pneumocystosis are discussed on the ground of their frequency, localizations, risk factors, clinical presentation, and outcome.