What are the symptoms of colon cancer?

Some of the most common symptoms of colon cancer are changes in bowel habits and blood in the stool. However, the early stages of colorectal cancer and pre-cancerous changes like colon polyps often don’t cause any symptoms.

Because you may not have symptoms and many digestive conditions cause symptoms similar to colon cancer, screening and early detection are essential to caring for your health. With colon cancer screenings, it’s possible not only to detect and treat colon cancer but also to prevent it.

man smiling at medical professional after discussing possible colon cancer symptoms

Early symptoms of colon cancer

When colon cancer is in its earliest stages, you may not have any apparent symptoms. However, it’s important to be aware of the early signs of colon cancer. That way, you can be proactive in caring for your digestive health.

Blood in stool

Blood in the stool can range from dark to bright red, and sometimes you’ll have blood in the stool that you can’t see. While one of the most common causes of red blood in the stool is hemorrhoids, ongoing rectal bleeding is also a sign of cancer.

Systemic symptoms of colon cancer

Along with digestive symptoms, colon cancer may cause systemic symptoms. Systemic symptoms happen when cancer spreads outside the digestive system and begins to affect other areas of the body and its ability to function as it should. These initial systemic symptoms are similar across many types of cancer.

As colon cancer grows and spreads, it changes how you absorb nutrients, increases inflammation, leads to other conditions like anemia, or affects normal hormone levels. As a result, some of the most common systemic symptoms of colon cancer are weight loss, changes in appetite and general fatigue or weakness.

Advanced-stage colon cancer

Symptoms of advanced-stage colon cancer happen when the cancer continues to spread in the body. These symptoms are more common when the cancer has reached colon cancer stages 3 and 4. If you’ve had other early-stage or systemic signs of colon cancer, you may continue to have those along with additional advanced-stage symptoms.

During the advanced stages of colon cancer, cancer cells develop in multiple areas throughout the body. This includes vital organs like your lungs and liver or the bones. The types of advanced symptoms you have will depend on the parts of the body that are affected by the spreading cancer cells.

Types of advanced symptoms:

Colon cancer symptoms vs. IBS

Irritable bowel syndrome, known as IBS, is one of the most common sources of digestive discomfort. It causes a range of symptoms from mild discomfort to severe issues that get in the way of everyday life. Sometimes, people with IBS experience periods of more intense symptoms, called flare-ups, that come and go.

You may not know the difference between symptoms caused by IBS and symptoms caused by something more severe like colon cancer, especially in its early stages. That’s why it is important to talk with your doctor if you have ongoing digestive symptoms.

While colon cancer and IBS have similar symptoms, there are also some differences. Your doctor can help you understand those differences.

When should I see a doctor for symptoms of colon cancer?

It’s better to see a doctor for colon cancer symptoms and rectal cancer symptoms sooner rather than later. While another digestive condition may be causing your symptoms, you should get checked for any colon cancer symptoms.

Listening to your body and talking to your doctor about new symptoms increases your ability to catch colon cancer early. Even if you don’t have any symptoms, you should still ask your doctor about colon cancer screenings, like a colonoscopy.

A colonoscopy is one of the best ways to detect colon cancer sooner. It also allows your doctor to remove colon polyps before they can turn into cancer.

woman in doctor office setting discussing colon cancer symptoms with male physician

Our locations near you

We help you get care at a location that fits your needs. We offer several locations for your care, including digestive care and colon cancer screenings in North and Central Texas.

Baylor Scott & White Advanced Digestive Care

3434 Swiss Ave Ste 200, Dallas, TX, 75204

Not accepting walk-ins

Baylor Scott & White Ambulatory Endoscopy Center

4708 Alliance Blvd Pavilion I, Ste 210, Plano, TX, 75093

Not accepting walk-ins

Baylor Scott & White Center for Esophageal Diseases

3434 Swiss Ave Ste 200, Dallas, TX, 75204

Not accepting walk-ins

Baylor Scott & White Clinic - Pflugerville Medical Center Building 2

2600 E Pflugerville Pkwy Building 2, Pflugerville, TX, 78660

Not accepting walk-ins

Baylor Scott & White Colon and Rectal - Waxahachie

2360 N Interstate 35E Ste 310, Waxahachie, TX, 75165

Not accepting walk-ins

Baylor Scott & White Digestive Diseases - Fort Worth

1250 8th Ave Ste 650, Fort Worth, TX, 76104

Not accepting walk-ins

Baylor Scott & White Hillcrest Colorectal & General Surgery

50 Hillcrest Medical Blvd Ste 105, Waco, TX, 76712

Not accepting walk-ins

Not accepting walk-ins

Not accepting walk-ins

Baylor Scott & White Texas Surgical Specialists - Waxahachie

2360 N Interstate 35E Ste 310, Waxahachie, TX, 75165

Not accepting walk-ins

Lonestar Endoscopy Center - Flower Mound

1001 Surrey Ln , Flower Mound, TX, 75022

Not accepting walk-ins

Lonestar Endoscopy Center - Southlake

515 S Nolen Dr , Southlake, TX, 76092

Not accepting walk-ins

North Central Surgical Center Hospital

9301 N Central Expy Ste 100, Dallas, TX, 75231

Not accepting walk-ins

North Texas Surgery Center

7992 W Virginia Dr , Dallas, TX, 75237

Not accepting walk-ins

Texas Endoscopy - Independence Medical Village

8080 Independence Pkwy Ste 160, Plano, TX, 75025

Not accepting walk-ins

Texas Endoscopy - Parker Rd.

6405 W Parker Rd Ste 370, Plano, TX, 75093

Not accepting walk-ins

Tuscan Surgery Center at Las Colinas

701 Tuscan Dr Ste 100, Irving, TX, 75039

Not accepting walk-ins

Frequently asked questions