New to site with questions
Hey Julie, I found this info on the web. Hope it helps. Good Luck, Melissa 
2.Vertical Gastrectomy (also called vertical Sleeve Gastrectomy, Greater Curvature Gastrectomy, Parietal Gastrectomy, Gastric Reduction and even Vertical Gastroplasty) is performed by approximately 15 surgeons worldwide. The originally procedure, conceived by Dr. D Johnston in England, was called The Magenstrasse and Mill Operation. It generates weight loss by restricting the amount of food that can be eaten (removal of stomach or vertical gastrectomy) without any bypass of the intestines or malabsorption. The stomach pouch is usually made smaller than the pouch used in the Duodenal Switch.
Advantages:
Stomach volume is reduced, but it tends to function normally so most food items can be consumed in small amounts.
Eliminates the portion of the stomach that produces the hormones that stimulates hunger (Ghrelin).
No dumping syndrome because the pylorus is preserved.
Minimizes the chance of an ulcer occurring.
By avoiding the intestinal bypass, the chance of intestinal obstruction (blockage), anemia, osteoporosis, protein deficiency and vitamin deficiency are almost eliminated.
Very effective as a first stage procedure for high BMI patients (BMI >55 kg/m2).
Limited results appear promising as a single stage procedure for low BMI patients (BMI 35-45 kg/m2).
Appealing option for people with existing anemia, Crohn's disease and numerous other conditions that make them too high risk for intestinal bypass procedures.
Can be done laparoscopically in patients weighing more than 500 pounds
Disadvantages:
2.Vertical Gastrectomy (also called vertical Sleeve Gastrectomy, Greater Curvature Gastrectomy, Parietal Gastrectomy, Gastric Reduction and even Vertical Gastroplasty) is performed by approximately 15 surgeons worldwide. The originally procedure, conceived by Dr. D Johnston in England, was called The Magenstrasse and Mill Operation. It generates weight loss by restricting the amount of food that can be eaten (removal of stomach or vertical gastrectomy) without any bypass of the intestines or malabsorption. The stomach pouch is usually made smaller than the pouch used in the Duodenal Switch.
Advantages:
Stomach volume is reduced, but it tends to function normally so most food items can be consumed in small amounts.
Eliminates the portion of the stomach that produces the hormones that stimulates hunger (Ghrelin).
No dumping syndrome because the pylorus is preserved.
Minimizes the chance of an ulcer occurring.
By avoiding the intestinal bypass, the chance of intestinal obstruction (blockage), anemia, osteoporosis, protein deficiency and vitamin deficiency are almost eliminated.
Very effective as a first stage procedure for high BMI patients (BMI >55 kg/m2).
Limited results appear promising as a single stage procedure for low BMI patients (BMI 35-45 kg/m2).
Appealing option for people with existing anemia, Crohn's disease and numerous other conditions that make them too high risk for intestinal bypass procedures.
Can be done laparoscopically in patients weighing more than 500 pounds
Disadvantages: 
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