<prompt> The most common cause of small intestinal obstruction isIntussusceptionIatrogenic adhesionsTraumaCarcinoma  <response>: Causes of small bowel obstruction in order of frequency : SabistonI. Adhesions 60 CommonestMalignant tumors 20 Second most common cause. Most commonly, these tumors are metastatic lesionsHernias 10Crohns disease 5 