Objective: To discuss the common reason of senile lower intestinal bleeding.

目的：探讨老年性下消化道出血的常见病因。

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Patient: I have pain in my lower abdomen and some bleeding. Doctor.

病人：大夫，我小肚子痛，而且流血了。

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Patient: I have pain in my lower abdomen and some bleeding. Doctor.

病人：大夫，我小肚子痛，而且流血了。

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