CEACAM5 and intestinal obstruction: Other variables, including ASA category, smoking, alcohol consumption, history of abdominal surgery, preoperative intestinal obstruction, hypertension, diabetes, and pulmonary insufficiency, as well as BMI, preoperative hemoglobin level, white blood cell, serum albumin level, and carcinoembryonic antigen level, were not significantly different in patients with symptomatic AL.