title: Reversible unilateral pulmonary hypoperfusion secondary to acute check-valve obstruction of a main bronchus.
mesh_terms: D001980:Bronchi; D005547:Foreign Bodies / Q000150:complications* / Q000175:diagnosis / Q000000981:diagnostic imaging; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011652:Pulmonary Circulation; D011859:Radiography; D011877:Radionuclide Imaging; D012711:Serum Albumin, Radio-Iodinated; D014692:Ventilation-Perfusion Ratio
chemical_list: D012711:Serum Albumin, Radio-Iodinated