Kono-S Anastomosis for Crohn's Disease: Report of 2 Cases

Crohn disease (CD) is a chronic inflammatory bowel disease that affects the entire gastrointestinal tract. The standard treatment for CD is medication to control the inflammation and relieve the symptoms. CD patients often require surgery at some point in their life for complications, treatment resistance, and side effects of medication. However, postoperative recurrences are common. To reduce anastomotic troubles, several types of anastomosis were investigated. Kono-S anastomosis, an antimesenteric, functional, end-to-end handsewn anastomosis, was introduced in order to prevent the restenosis caused by recurrence of CD in 2010. Kono-S anastomosis is expected lower susceptibility to mechanical distortions due to the stability provided by the “supporting column.” We herein report 2 cases of CD performed with a Kono-S anastomosis. The importance of these cases is that Kono-S anastomosis is useful for preventing restenosis caused by recurrence. The first patient was a 26-year-old man who suffered from CD for 9 years. Computed tomography (CT) showed inflammation and stenosis at the ileocecum, a fistula between the terminal ileum and sigmoid colon, and an intraperitoneal abscess. We performed an ileocecal resection and a Kono-S anastomosis. The second patient was a 25-year-old woman who suffered from CD for 8 years. CT showed inflammation and stenosis at the ileocecum, and a retroperitoneal abscess. We performed an ileocecal resection and Kono-S anastomosis. Both patients showed no recurrence after surgery. Kono-S anastomosis may be effective for preventing recurrence at anastomotic sites in CD patients.