The role of endoscopy in evaluating patients with head and neck cancer. A multi-institutional prospective study.


In a prospective multi-institutional study of 384 patients undergoing endoscopy, an 8.9% incidence of second primary neoplasms was discovered simultaneously in the lung (3.3%), esophagus (1.8%), and other head and neck sites (3.6%). The endoscopy was the only source of detection of these tumors in 58% of cases. A trend indicates that flexible fiberoptic… (More)


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