The stomach is divided with a stapling device in sleeve gastrectomy leaving three rows of steel staples behind. If this staple line breaks down and leaks, there is a risk of peritonitis, infection or abscess. The risk of this happening is less than 3% but in case it occurs, further surgery and the placement of drains will be needed, along with some time in intensive care, this can potentially become a risk to your life in very rare cases.