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Related Concept Videos

Diverticular Disease of the Colon01:27

Diverticular Disease of the Colon

Diverticular disease involves the formation of diverticula—small sac-like outpouchings of the colonic wall—and their complications. It most commonly affects the sigmoid colon due to higher intraluminal pressure and structural vulnerability. It results from structural weakness and increased pressure in the colon, producing pseudodiverticula that may remain silent or progress to inflammation and serious complications.Structure of DiverticulaIn diverticulosis, these outpouchings are...
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Assessment of the Rectum and Anus

Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
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Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
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Cancer02:18

Cancer

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Endoscopic Procedures II: Colonoscopy

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Updated: Jun 20, 2026

Competing-Risk Nomogram for Predicting Cancer-Specific Survival in Multiple Primary Colorectal Cancer Patients after Surgery
06:46

Competing-Risk Nomogram for Predicting Cancer-Specific Survival in Multiple Primary Colorectal Cancer Patients after Surgery

Published on: September 27, 2024

[Colorectal cancer].

Keiichi Takahashi1, Hiroshi Matsumoto, Tatsuro Yamaguchi

  • 1Dept. of Surgery, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital.

Gan to Kagaku Ryoho. Cancer & Chemotherapy
|September 17, 2009
PubMed
Summary
This summary is machine-generated.

Postoperative follow-up after colorectal cancer surgery does not extend prognosis but improves surgical outcomes for respectable metastatic lesions. Early detection of recurrence is key, and Japanese guidelines offer more rigorous surveillance than Western recommendations.

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Area of Science:

  • Oncology
  • Surgical Oncology
  • Gastroenterology

Background:

  • Postoperative follow-up following colorectal cancer surgery has not demonstrated a prolongation of patient prognosis.
  • However, early detection and resection of respectable metastatic lesions can significantly improve surgical outcomes.
  • Establishing effective follow-up systems is crucial for timely recurrence detection.

Purpose of the Study:

  • To compare the follow-up planning in Japanese colorectal cancer guidelines with international recommendations from the American Society of Clinical Oncology (ASCO) and the European Society for Medical Oncology (ESMO).
  • To evaluate the rigor and effectiveness of different follow-up strategies in detecting early recurrence.

Main Methods:

  • Comparative analysis of follow-up surveillance recommendations.
  • Review of Japanese colorectal cancer follow-up guidelines.
  • Comparison with ASCO (2005) and ESMO (2009) surveillance guidelines.

Main Results:

  • Japanese follow-up planning is significantly more rigorous compared to European and American guidelines.
  • The rigorous nature of Japanese planning facilitates earlier discovery of cancer recurrences.
  • No evidence suggests prolongation of prognosis solely from postoperative follow-up in colorectal cancer.

Conclusions:

  • A rigorous follow-up system is essential for improving surgical outcomes in colorectal cancer patients with respectable metastatic lesions.
  • Japanese follow-up guidelines appear superior in their ability to detect recurrences at an early, treatable stage.
  • Enhanced surveillance strategies are critical for optimizing patient management after colorectal cancer surgery.