Is there a role for flexible oesophagogastroscopy in upper aerodigestive tract squamous cell carcinoma?
Flexible oesophagogastroscopy is a useful test in patients with upper aerodigestive tract squamous cell carcinoma.
Our data suggest that 20 cases of HAL PDD are required to achieve a good interobserver agreement between inexperienced and experienced operator, and excellent agreement is achieved after 30 cases. The false positive rate of inexperienced operators was comparable to the experts and showed a gradual decrease.