Do all colon cancer patients have rectal bleeding?

No. All lesions of bowel whether in rt. of left colon are relatively vascular. When fecal material passes over a tumor it can induce bleeding. Tumors on the rt. side of the bowel have liquid feces passing over them and tend not to bleed whereas tumors on the left side having firm fecal material passing over can be induced to bleed. Bleeding as such for the most part is a mechanical issue.

Related Questions

When colon cancer reach a level that causes anemia blood in stool became visible or stool became dark or rectal bleeding has started am I right?

Not necessarily. Slow bleeding from colon cancer can lead to anemia, without visible blood or black tarry stools. More often than not, anemia is the presenting symptom, especially for right sided colon cancers. Read more...

Had rectal bleeding for a few weeks 2.5 years ago. No bleeding since. Dr said it was likely fissure that healed. Would colon cancer continue to bleed?

Colon cancer. Given your age and symptoms your doctor is probably correct. If you are not bleeding and not having symptoms i would not refer you for colonoscopy to evaluate for colon cancer. And yes, colon cancer would continue to bleed and would have caused multiple other symptoms by now. Read more...
Rectal bleeding. If your rectal bleeding has come back, then okay to get in to your doc for evaluation. More likely this is a hemorrhoid or recurrent fissure. Cancer in your age group is very low incidence. However, an exam under anesthesia will lead to a diagnosis, and treatment. Good luck. Read more...

24 yr old bright red rectal bleeding for a few weeks almost 3 years ago. No bleeding or symptoms since. Dr said ok. Would colon cancer continue to bleed?

No Rules. Unlikely that after all this time, there would be a cancer not causing symptoms. However, cancer does not follow rules. If there was bleeding, some evaluation should have been done, and maybe still should. Read more...

Has rectal bleeding when she is constipated. Can this be a sign of colon cancer?

Eval. Possible causes include: fissures, fistulas, hemorrhoids, cancer, infections or inflammation. Although rough, dry stool could lead to hemorrhoids or bleeding - you can not just assume that is the reason for bleeding. Get evaluated if more than a one time occurence. Read more...

I'm 25 and had a baby 7 months ago. I also have 4 out if 6 symptoms of colon cancer including rectal bleeding. How likely is this? I have appt w/ gi.

Not very likey. Many GI problems present with similar symptoms. Rarely is a GI symptom specific for just one problem. Colon cancer is exceedingly rare for a 25 year old. Keep your GI appt, it may be a hemorrhoid that can be fixed during your visit. Read more...

IFOBT test Dec 2014, no occult blood. April 2nd, 2015 minor rectal bleeding, stop 1 day after. April 17th, 2015 started again. I'm 22. Colon cancer?

Possibly hemorrhoids. most rectal bleed is usually from hemorrhoids, cancer is extremely rare especially at this age, but needs to be ruled out, therefore a specialist either general surgeon or gastroenterologist is necessary. Read more...

I don't drink alcohol at all and still have rectal bleeding, could I have colon cancer?

Yes...but not likely. You should really be examined. It's not normal to have rectal bleeding, especially at 33. Cancer is a remote possibility. More likely would be benign anorectal disease, or inflammatory bowel disease. Being a teatotaler doesn't make much difference. Please seek a medical evaluation. Good luck. Read more...
Many causes. Rectal bleeding can have many causes. Given your age it is unlikely to be colorectal cancer. The best way to get a diagnosis wojld be colonoscopy. See a GI doctor to get worked up completely. Read more...
Maybe. Rectal bleeding is never normal. It always needs to be checked out by a physician. There are many causes of rectal bleeding. It could be something as simple as a hemorrhoid or something as serious as colon cancer. Read more...

Rectal bleeding. Thin stools. I'm 18 and have no cancer in my family! Is it safe to say that I DONT have colon cancer given my age and family history?

Yes. it is unlikely that you have colon cancer but an evaluation is needed to see why you have rectal bleeding. You could have hemorrhoids or just be constipated. You should not have regular recital bleeding. . Read more...

Loosed/mushy stools for months, constant bloating, fatigue, loss of appetite & weight. No rectal bleeding or pain. Anxious about colon cancer. I'm 25.

Diarrhea. How is your weight? stable? I don't believe you have colon ca unless you have a strong family history, your symptoms could be 2/2 IBS vs gluten intolerance vs lactose intolerance. start with some meditation to get your anxiety under control, then avoid dairy product for 4-6 wks, if not better then omit Gluten as much as you can for 6-8 weeks and see if you get better. see a dr if these didn't work. Read more...
Rare but possible. At 25 it would be very unusual to develop colorectal cancer and almost always would be related to an inherited family predisposition like having 2 or more first degree family members with colorectal cancer, ovarian or endometrial cancer or someone with a lot of polyps. At your age these symptoms are usually not cancer but you absolutely see your doctor for a check up. Read more...