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What is the most likely cause of brigh red blood per rectum in a 75 year old man with no abnormalities found on endoscopy?

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The gastrointestinal tract (GIT) is the system of organs that allows for the consumption and digestion of food, absorption of nutrients, and excretion of waste in the form of fecal matter.


1. What is the most likely cause of brigh red blood per rectum in a 75 year old man with no abnormalities found on endoscopy?





 
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