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Doctor insights on: Colon Cancer Narrowing Of Stool

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Chance that 4 CT scans over 2 1/2 years would all miss sympotomatic colon cancer (narrow stool, occasion blood), also sigmoidscope to 35 cm.

Chance that 4 CT scans over 2 1/2 years would all miss sympotomatic colon cancer (narrow stool, occasion blood), also sigmoidscope to 35 cm.

Fairly high risk: CT scans are NOT good tools for looking inside the bowel. Endoscopy is the preferred tool, but a sigmoidoscopy, at its best, misses looking at half the colon. A look to merely 35 cm has missed about 85-90% of the colon. The usual method to evaluate the colon is a complete colonoscopy. ...Read more

Dr. Barry Rosen
4,298 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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Chance 4 ab / pelvic CT scans all missed symptomatic colon cancer (narrow stools, occaision blood) over three years. Also had sigmoidosopy to 35cm?

Chance 4 ab / pelvic  CT scans all missed symptomatic colon cancer (narrow stools, occaision blood) over three years. Also had sigmoidosopy to 35cm?

Hematochexia: Negative sigmoidoscopy and CT sacn of pelvis and Abdomen. May need a full colonoscopy doubt colon cancer for 3 years without significant progression. Other cause like IBD more likely ...Read more

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Is it possible for a woman in her mid 30s to develope colon cancer? Constipation, narrow stool alternating with diarrhea and pain for 4 weeks.

Is it possible for a woman in her mid 30s to develope colon cancer? Constipation, narrow stool alternating with diarrhea and pain for 4 weeks.

Yes, but unlikely: With the changes in your stool and symptoms, it would be very important to get in and be evaluated. It sounds like you need a colonoscopy and stool studies. while waiting for your appointment, you can get a a whole food diet, increase your fiber and take a good probiotic. also make sure you are hydrating well. Make sure you get in - getting your gut healthy again will make you feel much better ...Read more

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Do narrow stools always indicate colon cancer?

No: More commonly due to spasm in lower colon. However, sudden change in stool caliber, "pencil thin" stools, cramps, bleeding, nausea, weight loss need evaluation. Ongoing symptoms need evaluation. At the least, this should involve a doctor visit, perhaps other tests. ...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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23 .F No cancer history. Since 2 days inconsistency in BM. I go once a day but find hard to release. Lil narrow stools. Got gas.no blood Colon cancer?

23 .F No cancer history. Since 2 days inconsistency in BM. I go once a day but find hard to release. Lil narrow stools. Got gas.no blood Colon cancer?

Unlikely: A diagnosis of cancer of the intestines at 23 yr of age is very unusual. If you are constipated and there is larger piece of stool blocking passage of stool, this may cause thinner stools. Try to have more fiber in your diet and stay hydrated. ...Read more

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I have been having lower back pain, and pain in my right side.. along with narrow stools quite frequently. Could these be related? Colon Cancer?

I have been having lower back pain, and pain in my right side.. along with narrow stools quite frequently. Could these be related? Colon Cancer?

Um: Colon cancer could be but not the first thing to consider. You could have urinary issues, stones, infection, irritable bowel. I would see your doctor for a full history and physical. Good luck ...Read more

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Would symptomatic colon cancer be missed on 3 separate CT scans? I am only 37 but have had narrow stools and small amounts of blood for past year.

Would symptomatic colon cancer be missed on 3 separate CT scans? I am only 37 but have had narrow stools and small amounts of blood for past  year.

Unlikely : Best test would be a colonoscopy for your symptoms or at least a sigmoidoscopy. Usually if a colon cancer had symptoms a year ago those symptoms would have progressed over the ensuing 12 months and by now it would have been obvious by your symptoms and ct scan. ...Read more

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28 yrs old, male. Do narrow stools always indicate colon cancer or are there other reasons? No blood in stool. Bloating and gas.

28 yrs old, male. Do narrow stools always indicate colon cancer or are there other reasons? No blood in stool.  Bloating and gas.

No – but what's up?: And narrowed caliber of stool can be commonly associated with colon carcinoma in any age group. It relates to the relative constriction of the rectum prior to evacuation. Other conditions include rectal stenosis, a sizable rectal polyp, or other conditions serving to narrow and constricted the normal sized stool. Best let a gastroenterologist evaluate you by colonoscopy and anoscopy. ...Read more

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Been having thin/narrow stools.Clear rectal exam by gp/no blood in stool.Should i fear colon cancer?I'm 39 &had adenocarcinoma insitu of cervix 4yrago

Been having thin/narrow stools.Clear rectal exam by gp/no blood in stool.Should i fear colon cancer?I'm 39 &had adenocarcinoma insitu of cervix 4yrago

Possible lesion: In situ adeno unrelated unless some for of radiation employed that could narrow distal bowel. Narrowing of stool suggests that there is some constriction of bowel causing a narrowing of the lumen and thus the stool. Blood does not have to be present but relying on a gp rectal not satisfactory. Sigmoidoscopy at a minimum and colonoscopy more accepted for this problem. ...Read more

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Does colon cancer always make your stools bloody?

Does colon cancer always make your stools bloody?

Maybe: If having bleeding you should be checked for colon cancer or other problems that can cause bleeding. However you could have colon cancer without any visible signs of bleeding. If you are hi risk, get screened! ...Read more

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What does colon cancer make your stool look like?

What does colon cancer make your stool look like?

Grossly normal: Most patients with colon cancer have normal appearing stools. There may be some blood occasionally mixed or covering the stool, but usually this is microscopic rather than obvious. If the cancer is advanced, causing obstruction, then the stools can be narrowed, but again, this is for patients with advanced sigmoid or rectal cancers. The best way to diagnose colon cancer is with a colonoscopy. ...Read more

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Is it possible to have normal stool with colon cancer?

Is it possible to have normal stool with colon cancer?

Yes!: Most colon Cancers may not show up in or effect your stool till it is late and quite advanced(enough to narrow or block the lumen of the colon. If there is sufficient risk of colon cancer, then Colonoscopy is the best way to check for Colon Cancer provided the person is 50 years or older( this is the age to begin screening for Colon cancer in an asymptomatic person). ...Read more

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Can holding your stool in cause colon cancer when you are 50?

Can holding your stool in cause colon cancer when you are 50?

No!: But it's not a good idea! when your body sends you the signal that is time to move her bowels, you should listen. It's really pretty smart. Obviously, one cannot always get to a bathroom when we get that signal. But if you do, go move your bowels. Your colon, rectum, and especially the hemorrhoidal veins will thank you (prevent hemorrhoids!) good luck! ...Read more

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What to do if I am 18 , ive been told if u have thin stools , its sign of colon cancer. should I worry .?

Should be checked: Thin stools can be a sign of rectal, not colon cancer. "Pencil" stools are caused by the cancer in the distal rectum or anus causing a severe narrowing which allows only a thin stool to pass. If the thin stools continue, you should see you're PCP and may need a colonoscopy. ...Read more

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Dr. Sanjiv Kaul
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. Mark Ingerman
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