Incarcerated lumbar hernia in the Petit´s triangle as a cause of large bowel obstruction.

Petits hernia is a rare defect in the abdominal wall located in the lower lumbar triangle. The herniation in the Petiti trigonum is complicated by bowel incarceration in about 9% of cases, most often of the large bowel. We present a case report of a 73-year-old patient with clinical manifestations of large bowel obstrution. The patient was admitted and indicated for urgent surgery. Incarcerated left lumbar hernia in the Petits triangle with herniation of sigmoid colon that showed no signs of ischemia was found. Reposition of the sigmoid colon and hernioplasty of the lumbar hernia was performed. There were no postoperative complications and the patient was discharged on postoperative day 9. The presented case report shows that the lumbar hernia (Petit) may result in bowel obstruction and thus may cause a life-threatening condition that requires urgent surgical intervention.