<prompt> A patient of partial gastrectomy presents with neurological symptoms. Most probable diagnosis is:Folic acid deficiencyThiamine deficiencyVitamin B-12 deficiencyIron deficiency  <response>: Ans. c Vitmain B12 deficiencyRef: Shackelford 7th Edition, Pages 759-760 B12 deficiency manifests as megaloblastic anemia B12 deficiency happens after subtotal gastrectomy due to lack of IF secretion Oral supplementation is not useful Inj. B12 must be given every 3 monthly. 