Then the dissect, freezing and H.E staining were used to observe its pathological anatomy changes and pathological histologies.

• 眼观可见小肠内有条状出血，肠腔内充满番茄汁样内容物，后段肠管有溃疡灶，肠系膜淋巴结肿大、出血，呈大理石样。