Visceral and nodal calcification in patients with AIDS-related Pneumocystis carinii infection.

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Abstract
Clinical and radiologic findings in nine patients with AIDS and disseminated Pneumocystis carinii infection were analyzed retrospectively. The diagnosis was confirmed by autopsy (five patients) and by biopsy (two patients). All nine had a history of P. carinii pneumonia. CT showed parenchymal calcifications in the spleen (seven patients), liver (six patients), kidneys (six patients), abdominal lymph nodes (three patients), adrenal glands (two patients), and mediastinal lymph nodes (one patient). Multiple punctate calcifications in the liver, spleen, kidneys, and/or adrenal glands were visible on plain films in three patients. Sonography showed diffuse tiny echogenic foci without shadowing in the liver, spleen, and kidneys. In one patient, CT showed multiple hypodense lesions in the spleen. P. carinii infection should be included in the differential diagnosis when calcifications or focal lesions are detected at one or more extrapulmonary sites in an immunodeficient patient, even if there is no history or evidence of P. carinii pneumonia.

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