The purpose of this study is to show that the modified technique Scopinaro surgery allows a better control or reduction of complications often found in nutritional pancreatic and biliary derivations, starting from the assumption of a modified technique is as effective as Scopinaro classical technique for reducing overweight and control of comorbidities in obese patients with grade II and III.

28 participants Will be recruited and will be divided into 2 groups of 14 subjects each one. One group will receive the Classic Scopinaro surgery and the other, Modified Scopinaro Surgery. In Scopinaro Surgery Modified will be held with laparotomy and median opening in layers. It will also be performed at the manufacturing drifting pancreatic and biliary derivations, Roux-en-Y, dividing the small stomach.A communication portal to be implemented and calibrated through a nasogastric tube of 10mm where a retaining ring is placed horizontal gastroplasty, in order to avoid an expansion of this communication.

In the Classical Scopinaro surgery will be done the same procedures of Scopinaro Modified surgery , but the gastroplasty will be replaced by horizontal gastrectomy.

Inclusion Criteria:

• Body Mass Index (BMI) > 35;
• Body Mass Index greater than or equal to 40;
• Be indicated for bariatric surgery after other attempts at treatment;
• If BMI > 35 and <40, must submit AT LEAST one of comorbidities below: Type II diabetes, dyslipidemia, hypertension, joint arthropathy in average or great, sleep apnea, hypothyroidism.

Exclusion Criteria:

• Pregnant or breastfeeding
• Had undergone bariatric surgery before.
• Diagnostic of psychiatric disorders, according to the evaluation of especialist.
• Be user of illegal drugs or alcohol abuse.
• Be severe disease carrier, according to an evaluation specialist.
• Have severe lung disease or liver cirrhosis, according to the evaluation of especialist.
• Being active virus carrier - HIV.
• Has any condition that prevents surgery