This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Esophageal carcinoma is not predisposed by 
Select and explain. 
A. Achalasia, B. Scleroderma, C. Corrosive intake, D. barrett's oesophagus
B: Scleroderma
Answer: B: Scleroderma 
Explanation: .common predispositions in developing carcinoma oesophagus includes, *human papillomavirus infection *achalasia cardia (30%) *oesophageal webs (25%) *Barrett&;s oesophagus and also Plummer Vinson syndrome, tylosis, corrosive strictures, and nitrosamines. ref : SRB&;s manual of surgery,5th ed ,pg no 804