Background: Endoscopic-assisted transoral surgery (TOS) for superficial cancer of the pharyngo-esophageal junction (PEJ) is risk of stricture, and therapeutic outcomes are unclear. This study aimed to evaluate clinical outcomes of endoscopic-assisted TOS for superficial PEJ cancers.
Methods: We retrospectively compared clinical outcomes of endoscopic-assisted TOS for superficial PEJ cancers (group A) and of other sites in the hypopharynx (group B).
Results: The group A comprised 12 lesions in 12 patients, and group B comprised 198 lesions in 146 patients. Group A and group B exhibited en bloc resection rates of 100% and 99%. Median operative times were 82 and 37 min (p < 0.001). The frequency of stricture and local recurrence in group A was significantly higher in group B (42% vs. 1%, p < 0.001; 25% vs. 6%, p = 0.036). All adverse events could be managed with conservative treatments.
Conclusions: Endoscopic-assisted TOS is not ideal for treating superficial PEJ cancers compared to other sites.
Keywords: endoscopic laryngopharyngeal surgery; endoscopic submucosal dissection; hypopharyngeal cancer; pharyngo-esophageal junction; transoral surgery.
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