Richter's hernia (partial enterocele) is the strangulation/entrapment of only part of the circumference of the intestinal wall. It is relatively rare, and presents without mechanical obstruction -giving vague, non-specific symptoms and signs, and a threat of intestinal necrosis, gangrene, followed by perforation. A report of a case of entrapment of the jejunum in the femoral ring, which did not cause the gangrene, but symptoms of mechanical obstruction, is presented. Further inspection of the small bowel in this case revealed an extra-luminal tumour, which appeared to be a GIST. The entrapped part of the jejunum has been released and the tumour has been resected.