All of the following are the predisposing factors for squamous carcinoma of esophagus except

Risk factors for SCCTobacco and alcohol are strong risk factors for SCC, and they have a synergistic effect on risk. The disease is four times more prevalent in men, and race also appears to be a factorSCC is associated with ceain intrinsic disorders of the esophagus, such as Plummer-Vinson syndrome and achalasia. Other hereditary cancer syndromes associated with esophageal SCC include tylosis and Fanconi anemia. Patients with a history of caustic ingestion are at significantly increased risk for SCC.Risk factors for AdenocarcinomaAdenocarcinoma typically arises in the setting of Barrett&;s esophagus. In addition to GERD, smoking and obesity are risk factors for adenocarcinomaSabiston 20e pg: 1052