Diagnosis is through symptoms, screening and investigations. Early diagnosis results in better prognosis.
- Digital Rectal Exam (DRE); most common exam
- Fecal Occult Blood Test (FOBT)
- Sigmoidoscopy and/or Colonoscopy
- Carcinogenic Embryonic Antigen (CEA)
- Fecal Immunochemical Test (FIT)
- X-ray and abdominal CT scan/ultrasound
- Laboratory: Complete Blood Count, urinalysis, liver function tests