In this presentation, medical literature regarding this topic was reviewed along with the evaluation of treatment methods used in two specific cases during which leakages occurred along the staple line after laparoscopic sleeve gastrectomy (LSG). One of the two patients who developed a leakage after LSG was a 26-year-old female (case 1) and the other was a 20-year-old female (case 2). Case 1 was explored, when a leakage was diagnosed through clinical and screening procedures on day 3 after the surgery. After determining the leakage, the defect was primarily sutured and a feeding jejunostomy was placed. Case 1 developed leakage again on the fourth day after the second surgery, an esophagogastric stent was performed three times whose drainage was cut off from the leakage line, and the patient was discharged with full recovery. However, case 2 then developed leakage on the 14th day after surgery. Next an esophagogastric stent was placed in the patient, and a computer tomography (CT)-guided percutaneous drainage was placed to drain the collections inside the abdomen. Four weeks after this procedure, the stent was removed and after specifying that the leakage had closed, the patient was discharged with full recovery. The treatment methods of gastric leakages after LSG are also variable, and the treatment method is designated depending on the dimension of the leakage, the extent of the abdominal contamination, and the location of the leakage.