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Doctor insights on: Colon Cancer Stool Shape

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My dad (50 years old) has had changes in his stool shape. What are the chances of changes in stool shape being colon cancer?

My dad (50 years old) has had changes in his stool shape. What are the chances of changes in stool shape being colon cancer?

Possible: The clinical indications of a tumor growing in the distal bowel or simoid/rectosigmoid region is the appearance of blood, or narrowing of stool. Since the terminal large bowel functions to completely remove water from the GI tract, the initial site being cecum/rt. Colon, if a tumor is obstructing lumen, the stool becomes narrowed. One requires colonoscopy to confirm source of problem. ...Read more

Dr. Barry Rosen
4,344 Doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


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I had polyuria now chronic prostatitis and now my stool has a shape to it is it due to large prostate or maybe had colon cancer all along? I'm 26

I had polyuria now chronic prostatitis and now my stool has a shape to it is it due to large prostate or maybe had colon cancer all along? I'm 26

Probably not: You have multiple problems and concerns that should be evaluated by your physician. Colon cancer would be very unlikely, but the other problems need to be taken care of. ...Read more

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Is green stool a sign of colon cancer?

Not specifically: Bowel movement color is not a factor to watch for colon cancer unless you see blood. See a doctor for an examination. ...Read more

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Is foul smelling stool from colon cancer?

Is foul smelling stool from colon cancer?

Probably not, but...: There can be many reasons for changes in the odor of stool. Diet and medications are just a few. If there is a change that seems to persist for longer than a week or two, see your doctor for a discussion. ...Read more

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How can we find colon cancer through stool test?

How can we find colon cancer through stool test?

Colon cancer: Good wikipedia question. Look for blood when you poo. Test poo for blood and can test for cancer cells in stool with DNA testing. ...Read more

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Black and red dots in stool. Could it be colon cancer?

Black and red dots in stool. Could it be colon cancer?

See a doctor: Without seeing what you are describing it is very hard to know what you have. Diet is the most common cause for the color of bowel movements. Any changes in the bowel function or bowel habits should be evaluated by your doctor. ...Read more

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Does having pencil thin stool mean I have colon cancer?

Does having pencil thin stool mean I have colon cancer?

For how long?: Anybody can pass a thin one from time to time. If this persists for more than a few days, go in and get a rectal from your physician. It's more worrisome to have the caliber decreasing gradually over time. ...Read more

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Which stage of colon cancer involves blood in the stool?

Which stage of colon cancer involves blood in the stool?

Bleeding is not: One of staging criteria for colon cancer. Blood in stool is a relatively advanced sign of colon cancer, as is pain. You need a colonoscopy for early diagnosis of colon cancer. ...Read more

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Colon cancer. Do you always have to have blood seen in your stools?

Colon cancer. Do you always have to have blood seen in your stools?

No: However, blood in stool should definitely be a flag. That is why colonoscopy is being recommenced as a screening tool....To find cancer before they cause obstruction or bleed enough to be detected. Screening criteria are always changing with the research. Your doctor will guide you. ...Read more

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I have blood in my stools sometimes, does that mean I have colon cancer?

I have blood in my stools sometimes, does that mean I have colon cancer?

No, that is just one: Possiblity. Most likely is hemorroids, then infections, inflammatory bowel disease, diverticulosis, angiodysplasia. But you are right, the most deadly is cancer, so have it checked out. ...Read more

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Started having pencil thin stool. I'm really scared! Do I have colon cancer?

Started having pencil thin stool. I'm really scared! Do I have colon cancer?

Have it checked: Change in bowel movements can be a sign of colon cancer. It can also be a sign of other non-cancerous conditions of the colon as well, like diverticulitis. If this is a change for you, I would recommend going to a gastroenterologist and having it checked. ...Read more

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Can you have colon cancer that causes flat stools two years after clean colonoscopy?

Can you have colon cancer that causes flat stools two years after clean colonoscopy?

CA 2 y postcolonsocp: Possible if they missed one before or if you have strong family Hx of colon cancer. Need more details. ...Read more

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How accurate Is the schebo stool test in detecting colon cancer with present symtoms?

How accurate Is the schebo stool test in detecting colon cancer with present symtoms?

Not gold standard: It's a pretty good screen but if you're having symptoms, you need to get 'scoped. ...Read more

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How thin does a ribbon stool have to be in order to be a concern that it's colon cancer?

How thin does a ribbon stool have to be in order to be a concern that it's colon cancer?

Pencil thin stool: Pencil thin stools should generally be like that. However any change in bowel habits or bleeding should prompt evaluation by your pcp gastroenterologist or colorectal surgeon. ...Read more

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How can we find colon cancer through stool test?? What are the symptoms of colon cancer??

How can we find colon cancer through stool test?? What are the symptoms of colon cancer??

Here are few thought: Colon Cancer is often a silent disease in its early stages. That is why a colonoscopy examination is advised at the age of 50 years.
Some people will present with rectal bleeding (Blood in the stools). Abdominal pain and anemia related symptoms (fatigue) can also be a signal of colon cancer. Stool tests (2 of them) are also available through your PCP. ...Read more

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What to do if I have blood in my stools sometimes, does that nescesarily mean I have colon cancer?

What to do if I have blood in my stools sometimes, does that nescesarily mean I have colon cancer?

No: Most common cause of bleeding with stool is hemorrhoids. One cannot really tell the cause of bleeding by history alone and people with recurrent bleeding need to have colonoscopy to ensure they do not have any cancer. ...Read more

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Type 6 stool for the past 2 weeks. Is this a sign of colon cancer. Before, stool was more solid. Obstruction?

Type 6 stool for the past 2 weeks. Is this a sign of colon cancer. Before, stool was more solid. Obstruction?

Sure, but...: ...would certainly consider non-obstructing or nonmass-related causes, like altered GI transit, medication-induced bowel irregularity, depression, metabolic concerns (e.g. thyroid dysfunction, diabetic gut), neuropathies, infectious and noninfectious enteritis, many more. By Bristol stool scale #6 you're indicating diarrheal stool, correct? ...Read more

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Do thin ribbon like stool mobements in case of colon cancer continue all the time or is it ab on and off thing?

Ribbon like: Stool which is INTERMITTENT are DUE TO SPASM of the lower bowel (old term ="spastic colon") now this is a part of the diagnosis of IBS (Irritable Bowel Syndrome) which is a DIAGNOSIS of EXCLUSION (other GI problems MUST BE RULED OUT) SO STOP worrying about the "big C" and get yourself checked out by your PCP and at your age a COLONOSCOPY, may be recommended!
Hope this is helpful
Dr Z ...Read more

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No history of colon cancer in fam. This morning my stool was hard coming out saw a drop of blood on stool. Should I worry?

No history of colon cancer in fam. This morning my stool was hard coming out saw a drop of blood on stool. Should I worry?

No: One drop of blood in a hard and difficult to pass stool is normal - if it recurs, have it checked out. Increasing fiber in your diet and fluids may help. Try to have more fruits, vegetables, whole grains and legumes. They will make the stool softer, providing you have adequate fluids. Best of health to you ...Read more

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I am undergoing many gastro tests. My occult stool samples were negative. Does this assist in helping r/o colon cancer? Thank you

I am undergoing many gastro tests. My occult stool samples were negative. Does this assist in helping r/o colon cancer? Thank you

Depends: It depends on what stats you read. In reality, only 25% of colon cancers have occult blood. So, it being negative is a good thing, but by itself not enough.

The test carries more weight when it is positive than when negative. ...Read more

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Green stools, little black dots in stool and also when I wipe. Scared this may be rectal/colon cancer at 18. What are the chances?

Unlikely to be signi: At your age and this is not likely to be colon cancer. It is likely some thing related to either your diet and/or some inflammatory disease of the bowel. Go see a gastroenterologist ...Read more

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Having rectangle stool. Had clean colonoscopy 20 months ago with good prep. What are the chances colon cancer would be causing this?

Having rectangle stool. Had clean colonoscopy 20 months ago with good prep. What are the chances colon cancer would be causing this?

Low Chance ; BUT: At 40, a colonoscopy which shows no cancer less than 2 years ago is reassuring. Regardless, ASK your doctors advice about these new symptoms. Anorectal diseases such as hemorrhoids and fissures can cause changes to bowel caliber, but a thorough evaluation of the area needs to be done. While colon cancers are uncommon to grow in such a short span, it is not impossible. In short, see your doctor!! ...Read more

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If 'pencil' stool and 'narrow' stool are signs of colon cancer but exactly how thin of the stool consider as pencil stool or narrow?

If 'pencil' stool and 'narrow' stool are signs of colon cancer but exactly how thin of the stool consider as pencil stool or narrow?

Any change.: Any change in stool caliber warrants investigation. If one's stool has changed in size (narrow), to any degree, a colonoscopy is warranted. This could be an early sign of colon caner. ...Read more

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What is the survivability rate of colon cancer is a 28 year old male very good or very bad and is blood in the stool always common or not?

What is the survivability rate of colon cancer is a 28 year old male very good or very bad and is blood in the stool always common or not?

You have a confusing: ..Mixture of questions. 1. Survival rate depends on the stage, the lower the better. 2. At 28, colon cancer is rare but possible. Younger patients handle treatment better but stage is more important for survival. 3. Blood in stool is neither common nor normal. Needs to be evaluated. Try asking one question at a time please. ...Read more

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I just heard that pencil like stool is a health issue. I seldom have pencil like stool. Very rare. Should I be worried? Is it colon cancer?

Maybe: Pencil like stool can be a sign of colon cancer needs valuation bye gastroenterologist Dr. If it's only happening rarely it's usually not significant ...Read more

Dr. Eric Weisman
13 Doctors shared insights

Colon (Definition)

The colon is another term for the large intestine. This is the final portion of the digestive system, responsible for absorbing water and storing stool before evacuation. It is divided into sections described as cecum; ascending, transverse, descending and ...Read more


Dr. William Singer
12 Doctors shared insights

Colonic (Definition)

This is a combining term referring to some condition, treatment or disease of the colon. Such as colonic enema, colonic ...Read more