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BLOOD IN STOOL - Coggle Diagram
BLOOD IN STOOL
HISTORY
ONSET
ACUTE
ischaemia,meckel’s diverticulum and angiodysplasia
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ASSOCIATED WITH PAIN
PAINFUL-anorectal lesions, Ca anal canal, piles
PAINLESS-polyps, Meckel’s diverticulum
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TENESMUS
rectal Ca, ulcerative proctitis, irradiation proctitis
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COLOR OF STOOL
Brown stools streaked with blood- rectosigmoid or anal cause
Large volume of bright red blood- colonic source
Black stools- upper GI bleed
Maroon stools- small intestine or right colon
Bright red blood- anal canal
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PAST HISTORY
Radiation Heart disease- mesenteric embolism
Drugs- warfarin, heparin, NSAIDs
Liver disease- variceal bleeding
Chronic renal failure
PERSONAL HISTORY
H/O Smoking- peptic ulceration, colorectal Ca
H/O intake of alcohol
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AGE
AGE < 50 yrs- infection, anorectal disease, IBD
> 50 yrs- malignancy, diverticulosis
Any age- piles
H/O Weight loss, anorexia, abdominal pain, vomitting – suggestive malignancy
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