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D.T. Ginat et al.

 

 

10.13\ Salivary Bypass Stent

10.13.1  Discussion

Salivary bypass stents, such as the Montgomery® salivary bypass tube, are long tubes composed of silicone with a flanged superior end, which are hyperattenuating on CT (Fig. 10.76). Salivary

a

bypass stents serve as an effective way of ­diverting and excluding the oral-alimentary stream. The devices are also used as part of the repair of cervical esophageal and hypopharyngeal strictures and to facilitate the management of tracheoesophageal fistulae or esophageal disruption. Stents can be secured with sutures or left unsecured, which may predispose to migration into the intestinal tract.

b

Fig. 10.76  Montgomery® salivary bypass tube. Axial (a) and sagittal (b) CT images show the salivary bypass stent (arrows) positioned within the neopharynx. A tracheostomy tube is also present