右边的乙状结肠在颜色上比临近的小肠浅，有结肠带。乙状结肠的突出物是多个圆形的蓝灰色的憩室。憩室发生在结肠比小肠更常见。易于发生在左半结肠。它们常发生在发达国家人群中，他们的食物中纤维素含量低。
The sigmoid colon at the right appears lighter in color than the adjacent small intestine and has a band of taenia coli muscle running longitudinally. Protruding from the sigmoid colon are multiple rounded bluish-gray diverticula. Diverticula are much more common in the colon than in small intestine, and they are more common in the left colon, and they are more common in persons living in developed nations in which the usual diet has less fiber.
