<prompt> Pt with complains of dysphagia can take liquid only and history of smoking and weight loss -Achalesia cardiaBarrets esophagusCarcinoma esophagusNone  <response>: Ans. is c i.e., Carcinoma esophagus Predisposing factors for Ca Esophaguso For Adenocarcinoma Chronic gastric reflux Barretts esophaguso For Squamous cell Ca Alcohol Cigarette Mucosal damage from physical agentsLong term ingestion of hot liquidsLye caustic ingestionRadiation-induced stricturesChronic achalasia Other ingested carcinogensNitrates, nitrites, nitrosaminesSmoked opiatesFungal toxins in pickled vegetables Plummer-Vinson-Paterson-Kelly syndrome Esophageal Web glossitis Iron deficiency Tylosis palmaris et plantaris Congenital hyperkeratosis and pitting of palms and soles Human papilloma virus Esophageal diverticula Dietary deficiencies of molvbednum, zinc, vitamin A. Celiac sprue 