title: Blood clot resulting in ball-valve obstruction in the airway.
mesh_terms: D000402:Airway Obstruction / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D001769:Blood; D001999:Bronchoscopy; D006469:Hemoptysis / Q000601:surgery; D006801:Humans; D007442:Intubation, Intratracheal; D008297:Male; D008875:Middle Aged; D012123:Pulmonary Ventilation