直肠出血可以是指从肛门流出的任何血液，尽管通常认为直肠出血是指下结肠或直肠的出血。直肠是大肠的下部。
直肠出血会在您的粪便、厕纸或马桶上留下血液。直肠出血引起的血液通常是鲜红色，但偶尔可能是深褐红色。
Jan. 06, 2022
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