Colonoscopy-assisted removal of an impaction foreign body at the rectosigmoid junction: A case report

Figure 1 Computed tomography localization of the intestinal foreign body before surgery. A: The patient had anal opening edema, acute prolapsed internal anal hemorrhoids, and surface congestion and erosion prior to surgery; B: Preoperatively, the foreign body was located at the junction of the rectum and sigmoid colon by computed tomography scanning; C: During preoperative colonoscopy, a foreign body was found at the junction of the rectum and sigmoid colon, with the tail end wrapped in intestinal secretions.