Diabetes Remission After RYGBP and RYGBP With Fundus Resection

The goal of this randomized clinical trial is to evaluate glycemic control in patients with morbid obesity and type 2 diabetes after Roux-en-Y gastric bypass (RYGBP) and RYGBP with fundus resection. The main questions to answer are: * Rate of diabetes remission and the role of the gastrointestinal hormones * Whether fundus resection leads to improved glycemic control Patients will randomly undergo typical RYGBP or RYGBP with fundus resection. Gastrointestinal hormones profile \[ghrelin, glucagon-like peptide-1 (GLP-1), peptide YY (PYY), glucagon\], glucose levels and insulin response will be measured preoperatively, at 6 months and at 12 months, during 120-min OGTT.