Brief Report: PDF OnlyImprovement of Mucociliary Transport System Four Years After Metal Stent Insertion in TracheaTojo, Takashi M.D.; Imai, Teruhiko M.D.; Sasaki, Yoshiaki M.D.; Ohishi, Hajime M.D.; Uchida, Hideo M.D.; Nezu, Kunimoto M.D.; Taniguchi, Shigeki M.D.; Kitamura, Soichiro M.D. Author Information Department of Surgery III, and †Department of Radiology and Oncoradiology, Nara Medical University, Nara, Japan. T.T. is presently affiliated with the Department of General Thoracic Surgery, Osaka City General Hospital, Osaka, Japan. S.K. is presently affiliated with the Department of Cardiovascular Surgery, National Cardiovascular Center, Suita, Japan. Journal of Bronchology: January 1999 - Volume 6 - Issue 1 - p 35 Free Abstract We used aerosol inhalation cine-scintigraphy to evaluate the mucociliary transport system (MCT) in a patient who had undergone metal stent insertion for tracheal stenosis. A 43-year-old woman with marked stenosis of the upper trachea by squamous cell carcinoma was treated by insertion of a metal stent under local anesthesia as an emergency procedure, and thereafter with chemoradiotherapy resulting in a complete remission. On bronchoscopic examination 1 month after stenting, the stent was minimally covered with the inflamed epithelium. On the first aerosol inhalation cine-scintigraphy at 3 months after the stenting, the radioisotope bolus pattern represented complete stasis except on coughing. However, 4 years after the stenting, the stent was almost completely covered with the epithelium, and the epithelial inflammation had disappeared on bronchoscopic examination. On aerosol inhalation cine-scintigraphy, slower and less smooth movement than normal was observed from the main bronchi to the trachea, and the MCT appeared to have improved over the long period after the stenting. © 1999 Lippincott Williams & Wilkins, Inc.