Early Warning Signs of Colon Cancer
Medically reviewed by Dr. Sujan Shrestha, MS, MCh

Colorectal cancer is one of the most treatable cancers when caught early — knowing the warning signs matters.

Colorectal cancer develops in the colon or rectum, often starting as small growths called polyps that can turn cancerous over years. Because early colon cancer often causes few or no symptoms, screening is one of the most powerful tools available.

ठूलो आन्द्रा वा मलद्वार क्षेत्रमा हुने क्यान्सरलाई समयमै पत्ता लगाउन सकिन्छ।

Warning Signs to Take Seriously

  • A persistent change in bowel habits lasting more than a few weeks
  • Blood in the stool, or dark/tarry stool
  • Unexplained weight loss or persistent fatigue
  • A feeling that the bowel does not empty completely
  • Persistent abdominal discomfort or cramping
Important: Any of these symptoms lasting more than two to three weeks deserves a surgical consultation — most causes are not cancer, but ruling it out early is what makes treatment most effective.

Treatment Approach

Depending on the stage, treatment may involve laparoscopic surgery to remove the affected section of bowel, sometimes combined with chemotherapy or radiation. Laparoscopic techniques allow oncological safety with a faster recovery than traditional open surgery, in appropriate cases.

Frequently Asked Questions

General guidelines suggest screening discussions from around age 45–50, or earlier with a family history — this should be discussed individually with a surgeon.

Yes. Colon cancer detected at an early stage has significantly better treatment outcomes than cancer found later, which is the core reason screening matters.

Have symptoms like these?

Message Dr. Shrestha's team directly for guidance before booking a visit.