title: Pneumocystis carinii pneumonia presenting as localized nodular densities.
mesh_terms: D000328:Adult; D001706:Biopsy; D003937:Diagnosis, Differential; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging* / Q000382:microbiology / Q000473:pathology; D008297:Male; D011010:Pneumocystis / Q000302:isolation & purification; D011020:Pneumonia, Pneumocystis / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000382:microbiology / Q000473:pathology; D011859:Radiography