All are precancerous lesions for carcinoma of esophagus except
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
Achalasia
Paterson Kelly syndrome
Zenker Diveiculum
Ectodermal dysplasia
G.I.T