title: Profound xenon-133 trapping in left main bronchus. Obstruction by necrotic tumor.
abstract: Squamous cell carcinoma of the esophagus eroded into the central airway with production of left main bronchus occlusion and aspiration pneumonia of the right lower lobe.
mesh_terms: D001980:Bronchi / Q000000981:diagnostic imaging*; D001984:Bronchial Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000556:secondary*; D004938:Esophageal Neoplasms / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D014980:Xenon Radioisotopes
chemical_list: D014980:Xenon Radioisotopes