Overview
Colon cancer starts in the large intestine. Most begin as polyps.
Symptoms
- •Blood in stool
- •Abdominal pain
- •Change in bowel habits
- •Weight loss
Stages
Stage 0Stage IStage IIStage IIIStage IV
Diagnosis
- ✓Colonoscopy
- ✓Fecal occult blood test
- ✓CT colonography
- ✓Biopsy
Treatments
- →Surgery (colectomy)
- →Chemotherapy
- →Radiation (rare)
- →Targeted therapy
Risk Factors
⚠️Age >50
⚠️Family history
⚠️IBD
⚠️Diet high in red meat
Key Facts
- ℹ️Screening from age 45
- ℹ️5-yr survival: 90% (I), 14% (IV)
ICD-10: C18 | Prevalence: çok yaygın
Last updated: 11/9/2025