Enter your ZIP code:

Please enter a 5 digit zipcode
No results...

Entering your zip code helps us to provide information and results that are more relevant to you.

Your privacy is important to us. By continuing, you agree to our Privacy Policy.





Two medical professionals, one in a white coat and the other in blue scrubs, discuss notes in a hallway.

Rectal Cancer

Rectal cancer occurs when malignant cells form in the rectum, the last 8 to 10 inches of the large intestine. Often, rectal cancer develops when benign polyps become cancerous.

If rectal cancer is detected early, the disease is easily curable. Regular screenings for polyps beginning at age 45 are crucial to catching the disease in its earliest stages.

Risk factors

The exact cause of rectal cancer is unknown, but there are several risk factors for the disease:

  • Your age
    Most cases of rectal cancer are seen in patients who are age 45 or older.
  • Other conditions
    If you have had polyps or cancers of the ovary, endometrium or breast, your risk of rectal cancer increases. If you have had radiation treatment for prostate or cervical cancer, your risk is increased. If you have had colon or rectal cancer before, your risk of a recurrence is also greater.
  • Genetics
    If a close relative — such as a mother, father, brother, sister or child — has had rectal or colon cancer, you are at greater risk.Symptoms

A few symptoms can indicate possible rectal cancer, but not all colorectal cancer patients have symptoms. The signs of rectal cancer can be similar to those for other conditions. See your physician if you are experiencing the following:

  • Any change in bowel habits—diarrhea, constipation, narrow stools or a feeling that the bowels are not completely emptying—can indicate a problem
  • Bright or dark red blood in the stool or toilet bowl
  • Abdominal discomfort, such as frequent gas pains, bloating, fullness or cramps
  • Changes in appetite
  • Unexplained weight loss
  • Unexplained fatigue

Diagnosis

The colorectal surgeons at UCI Health are unmatched in their expertise at diagnosing and treating cancer of the rectum. As a university medical center, our physicians have access to state-of-the-art diagnostic techniques as well as the latest treatments and therapies.

Several tests are needed to accurately diagnose rectal cancer, including:

  • Digital rectal exam (DRE)
    In this exam, the physician checks for abnormalities in the lower half of the rectum.
  • X-rays
    Imaging the gastrointestinal tract can reveal abnormalities that can't be felt in a physical exam.
  • Fecal occult blood test
    This test can detect the presence of microscopic (occult) blood cells in the stool. Invisible blood in the stool is often the first—and only—warning sign of rectal cancer.

Treatment

Because we are a university medical center, rectal cancer treatment at UCI Health is delivered by an experienced team of colorectal specialists, who ground their treatments in the latest research. Few medical centers in the region offer this level of care.

After diagnosis, your physician discusses treatment options, which generally depend on the location, size and stage of the tumor. Treatment may include one, or a combination of, the following:

  • Surgery
    An operation to remove the tumor is the primary treatment for rectal cancer at any stage. At UCI Health, we use minimally invasive approaches, including laparoscopic, robot-assisted and transanal endoscopic microsurgery. We also specialize in function- and sphincter-preserving approaches.
  • Radiation
    Radiation involves the use of high energy X-rays to destroy cancer cells.
  • Chemotherapy
    Chemotherapy uses drugs to inhibit the growth of cancer cells, by either killing them or preventing them from dividing further.
  • Targeted therapy
    In this type of therapy, drugs and other substances are used to attack specific cancer cells, leaving normal cells alone.
  • Clinical trials
    As the only university medical center in Orange County, we are continuously running clinical trials that give our patients access to innovative new drugs and therapies long before they are available to the general public.

View our current clinical trials

Questions? Call us anytime at 888-717-4463.

Social Media Listing

Make an Appointment

Our cancer specialists provide expert care for all types of cancers.

Schedule an Appointment