Colorectal Cancer Screening, Causes & Symptoms | AMO

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Colorectal cancer Information
Colorectal cancer Information

Patients diagnosed with colorectal cancer are mostly males aged about 50-75. Most colorectal cancers occur when a tiny polyp, often benign, undergoes gradual canceration over a course of 10 years or more. Generally, colorectal cancers are cancerous malignant tumors developed from benign tumors.

Colorectal cancer
Colorectal cancer symptoms
Colorectal cancer
  • Anal bleeding
  • Excrements in black color or with mucus
  • Change in bowel habit
  • Abdominalcolic 
  • Loss of weight
  • Anemia
  • Vomiting
  • Feeling of residual excrements in intestines after defecation
Colorectal cancer risk factors
Colorectal cancer risk factors
  • Male aged 50-75
  • Diet: insufficient fibers or high intake of red meat
  • Lack of exercise
  • Obesity
  • Long-term exposure to tobacco and alcohol
Colorectal cancer
  • Digital rectal examination
  • Ultrasound and CT scan
  • X-ray
  • Rectoscopy
  • Blood test

Surgical excision, radiotherapy, chemotherapy and targeted therapy.

  • Chapter 5.5. World Cancer Report 2014. World Health Organization. 2014.
  • U.S. Preventive Services Task Force, Colorectal Cancer: Screening,
  • colorectal-cancer-screening, 2008
  • 神農氏, 大腸癌:診斷,
  • 衛生防護中心, 大腸癌,