A hernia is a medical condition in which an organ pushes through the muscles that are supposed to contain it. Lumbar hernia is an orthopedic disease in which the intervertebral disc has slipped, but the hernia we deal with is the so-called ‘slipped intestine’, which may may actually be an organ other than the intestine. Common examples are inguinal hernia, umbilical hernia, linea alba hernia, and esophageal hiatus hernia. Among them, the most common one is inguinal hernia, and our department mainly deals with adult inguinal hernia. Aging leads to weakening weaken of the tissue in the inguinal region, which includes the area from the abdomen to the beginning of the legs. From the weakened part, the peritonaeum (membrane that lines the abdominal cavity) protrudes in a bag-like shape. Then, organs such as intestinal tract protrude subcutaneously through the bag-shaped peritonaeum. In rare cases, the protruding organ cannot be returned, leading to life-threateningconditions that can only be treated with emergency surgery. The majority of cases are not serious emergencies, but as this condition does not cure spontaneously and its symptoms will gradually worsen over months and years, we recommend proactive surgery. When surgery is performed, patients are hospitalized for about one week. We conduct about 100 of these surgeries every year, and as part of our efforts to discharge patients as early as possible, we have recently adopted less invasive laparoscopic surgery, which accounted for one quarter of our 2013 hernia surgeries.