Gastrectomy or minor modification of the digestive system to correct obesity surgery Gastrectomy or Gastroplasty Tubular gastrectomy is a minor anatomical modification of the digestive system to correct morbid obesity successfully. Also known as Sleeve Gastrectomy, Vertical Gastrectomy or Gastric Sleeve. Gastrectomy is a treatment that was initially described as a first step to more complicated procedures like gastric bypass or duodenal switch in patients with high surgical risk with body mass index above 50, subsequently it was found that weight loss initial patients undergoing gastrectomy as the only surgery was very good (approximately between 50 and 60% of overweight) one year after surgery, without the need for additional surgery or complementary. How it works Gastrectomy is performed by laparoscopic surgery without opening the abdomen, and general anesthesia and takes between 90 and 120 minutes. By gastrectomy, is a longitudinal resection of the distensible part of the stomach, drawing up a small stomach elongate, with a small capacity 80-120cc (being the normal stomach 1.000cc), retaining its functioning digestive system natural filling and emptying. The area is left gastric tube has three layers of muscle and is therefore the least distensible stomach. What are its advantages? The advantages of gastrectomy with respect to other restrictive techniques that are performed, is the absence of foreign bodies (Masson intervention and Lap Band) that regulate appetite, which was first achieved in a strictly technical. Gastrectomy is a true metabolic surgery. Decreased levels of ghrelin (hunger hormone), by eliminating the portion of the stomach that produces it.