A 28-year-old woman presents with a 7-month history of recurrent, crampy pain in the left lower abdominal quadrant, bloating with abdominal distention, and frequent, loose stools.

• 女性，28岁，表现为腹部左下象限反复发作的痉挛痛7月，腹部膨胀并常伴有稀便。