title: Pulmonary perfusion defects in postoperative chest infections.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005767:Gastrointestinal Diseases / Q000601:surgery*; D006801:Humans; D008171:Lung Diseases / Q000209:etiology; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011655:Pulmonary Embolism / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography; D011877:Radionuclide Imaging