title: Pneumocystis carinii pneumonia presenting as a single pulmonary nodule.
mesh_terms: D000293:Adolescent; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D011020:Pneumonia, Pneumocystis / Q000000981:diagnostic imaging* / Q000473:pathology; D011877:Radionuclide Imaging; D014057:Tomography, X-Ray Computed