The sleeve gastrectomy is a surgery only on the stomach (it is a restrictive procedure) and does not involve any surgery on the intestine (which would make it malabsorptive). Sleeve gastrectomy has also been called partial gastrectomy and vertical sleeve gastrectomy. It basically consists of making a stomach that initially looks like a pouch into a long tube; therefore the name sleeve. The sleeve gastrectomy (SG) removes about two-thirds of the stomach, which provides for quicker satiety (sense of fullness) and decreased appetite. The smaller stomach pouch restricts food intake by allowing only a small amount of food to be eaten at one time. After the separation of the stomach into a smaller tube, the remainder of the stomach is removed. The valve at the outlet of the stomach (the pylorus) remains in place which helps to allow for the feeling of fullness.