How common is Colo-Rectal Cancer?

It is one of the most common cancers worldwide, especially in people above 45–50 years of age.

CAUSES & RISK FACTORS

4. Who is at Risk?

Risk factors include:

• Age above 45–50 years

• Family history of colon cancer

• Polyps in colon

• Smoking and alcohol

• Obesity

• Low-fiber diet / high red-meat diet

• Inflammatory bowel diseases (Ulcerative colitis, Crohn’s)

• Genetic syndromes (FAP, Lynch syndrome)

SYMPTOMS

5. What are the Warning Signs?

Common symptoms:

• Blood in stool

• Change in bowel habits (constipation or diarrhea)

• Thin ribbon-like stools

• Abdominal pain or bloating

• Unexplained weight loss

• Weakness or anemia

• Feeling of incomplete emptying

Early stages may have no symptoms, which is why screening is important.

DIAGNOSIS

6. How is Colo-Rectal Cancer Diagnosed?

Doctors use:

• Colonoscopy – camera test to see inside colon (most important)

• Biopsy – small tissue sample to confirm cancer

• CT Scan / MRI – check spread

• Blood tests

• CEA tumor marker

STAGING (How advanced is the cancer?)

7. What are the Stages?

• Stage 1 – small tumor, inside bowel wall

• Stage 2 – larger tumor, no lymph nodes

• Stage 3 – spread to lymph nodes

• Stage 4 – spread to liver, lungs, or other organs

Treatment depends on the stage.

ROLE OF SURGERY – MAIN TREATMENT

8. Is Surgery Important?

Yes. Surgery is the most important and often curative treatment, especially in early stages.

Goal of surgery:

• Remove tumor completely

• Remove nearby lymph nodes

• Join healthy bowel ends

9. What Surgeries are Done?

For Colon Cancer:

• Segmental Colectomy / Hemicolectomy

  • Remove part of colon with tumor

  • Join two ends

For Rectal Cancer:

• Low Anterior Resection (LAR)

  • Tumor removed, bowel joined, anus preserved

• Abdominoperineal Resection (APR)

  • Done for very low tumors

  • Permanent stoma (colostomy bag) may be needed

10. Can Surgery be Laparoscopic?

Yes, in many patients.

Advantages:

• Smaller cuts

• Less pain

• Faster recovery

• Shorter hospital stay

11. What is a Stoma?

Sometimes a temporary or permanent opening on the abdomen is made to pass stool into a bag.
This may be needed when healing time is required or tumor is very low.

ROLE OF CHEMOTHERAPY

12. What is Chemotherapy?

Chemotherapy is anti-cancer medicine given by injection or tablets to kill cancer cells or stop their growth.

13. When is Chemotherapy Needed?

• Stage 3 cancers – almost always

• Stage 2 high-risk cases

• Stage 4 cancers

• After surgery to reduce recurrence

• Before surgery in some rectal cancers

14. How is Chemotherapy Given?

• Through IV drip or tablets

• In cycles (every 2–3 weeks)

• Usually for 3–6 months

15. What are Common Side Effects?

• Hair thinning

• Nausea or vomiting

• Weakness

• Loose stools

• Mouth ulcers

• Low immunity

Most side effects are temporary and manageable.

RADIOTHERAPY (Mainly for Rectal Cancer)

16. When is Radiation Used?

• Before surgery to shrink tumor

• After surgery if margins are close

• Combined with chemotherapy

RECOVERY & FOLLOW-UP

17. What Happens After Treatment?

• Regular scans and blood tests

• Colonoscopy follow-up

• Healthy diet and exercise

• Avoid smoking/alcohol

SURVIVAL & OUTCOME

18. What Affects Survival?

• Stage of cancer

• Lymph node involvement

• Complete tumor removal

• Response to chemotherapy

• Patient’s overall health

Early detection = very high cure rates.

SCREENING

19. Can Colo-Rectal Cancer be Prevented or Detected Early?

Yes.

• Colonoscopy after age 45

• Stool blood tests

• Remove polyps early

• High-fiber diet

• Regular exercise

SIMPLE TAKE-HOME MESSAGE

Colo-rectal cancer is common but highly treatable when detected early.
Surgery is the main treatment and can cure many patients.
Chemotherapy is used to kill remaining cancer cells and prevent recurrence.
Regular screening and early diagnosis save lives.