title: Persisting perfusion defects after bronchoscopic removal or spontaneous expulsion of aspirated foreign objects.
abstract: Follow-up lung scans were obtained in 9 children to determine whether perfusion lung scanning could be used to verify completeness of foreign-body removal. In 4 patients, extensive perfusion defects were present 4-19 days after removal of the object. In 1 patient, the area of hypoperfusion was larger than the territory served by a persistently obstructed lobar bronchus. Follow-up lung scans are of limited value for verifying completeness of foreign-body removal and localization of retained fragments.
mesh_terms: D000402:Airway Obstruction / Q000209:etiology / Q000503:physiopathology; D001999:Bronchoscopy; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D005547:Foreign Bodies / Q000628:therapy*; D006801:Humans; D007223:Infant; D001239:Inhalation; D008168:Lung; D008297:Male; D011652:Pulmonary Circulation; D011877:Radionuclide Imaging; D013997:Time Factors