Abstract Background Intestinal obstruction caused by endometriosis maybe easily misdiagnosed as a tumor or other occupying disease in emergency condition. How to deal with it depending on the clarity of the preoperative diagnosis and the experience of the surgeon. Case presentation A 47-year-old woman. admitted to our emergency service with abdominal pain and distension for 5 days. https://storeanimalwiz.shop/product-category/cat-litter/