All are precancerous lesions for carcinoma of esophagus except: (A) Achalasia, (B) Paterson Kelly syndrome, (C) Zenker Diveiculum, (D) Ectodermal dysplasia
Answer is C. Refer Robbins page no Pg 758-9 A Zenker's diveiculum, more formally known as a hypopharyngeal diveiculum, is a pouch that can form at the junction of the hypopharynx (lower pa of the throat) and the esophagus, an area known as Killian's Triangle