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Colorectal cancer

P J Prichard1, J J Tjandra

  • 1Royal Melbourne Hospital, VIC.

The Medical Journal of Australia
|December 16, 1998
PubMed
Summary
This summary is machine-generated.

Colorectal cancer is a major cause of cancer death in Australia, influenced by diet and genetics. Early detection through screening and prompt diagnosis of symptoms like rectal bleeding are crucial for effective treatment.

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Area of Science:

  • Oncology
  • Gastroenterology
  • Public Health

Background:

  • Colorectal cancer is a significant cause of cancer mortality in Australia, second only to lung cancer.
  • Dietary factors contribute to approximately 50% of colorectal cancers, while genetic factors, including familial syndromes, account for 15%-20%.

Purpose of the Study:

  • To outline the key aspects of colorectal cancer, including its causes, common symptoms, diagnostic methods, treatment approaches, and screening recommendations.
  • To provide an overview of current understanding and management strategies for colorectal cancer in the Australian context.

Main Methods:

  • Review of established knowledge on colorectal cancer etiology, presentation, diagnosis, and treatment.
  • Synthesis of information regarding screening guidelines for average and high-risk populations.

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Main Results:

  • Common symptoms include rectal bleeding for left-sided tumors and iron-deficiency anemia for right-sided tumors.
  • Diagnostic procedures involve digital rectal examination, sigmoidoscopy, biopsy, and colonoscopy.
  • Standard treatment involves segmental resection; adjuvant therapy's role is under ongoing research.

Conclusions:

  • Annual or biennial fecal occult blood tests are recommended for individuals over 50 at average risk.
  • Earlier and more intensive screening is advised for those with elevated risk factors.
  • Prompt medical evaluation for suggestive symptoms is essential for timely diagnosis and management.