a silicone salivary bypass tube is introduced as an adjuvant to the therapy of the following clinical entities : advanced carcinoma of the pharynx complicated by stricture and/or pharyngocutaneous fistula , traumatic stricture of the cervical esophagus or tracheoesophageal fistula , a stricture of the hypopharynx or cervical esophagus following ingestion of a caustic material , and a stricture of the cervical esophagus following laryngoesophagectomy .
C0747548
carcinoma of the pharynx
C0027530
cervical