Related Experiment Videos
[Multiple tumors of colon and rectum]
C Soravia1, R A Egeli, M Obradovic
1Clinique de chirurgie digestive, Hôpital cantonal universitaire, Genève.
Schweizerische Medizinische Wochenschrift
|April 3, 1993
Summary
Patients with colorectal cancer may develop multiple tumors. Early detection via colonoscopy and lifelong follow-up are crucial for improving survival rates in these patients.
Area of Science:
- Gastroenterology
- Oncology
- Epidemiology
Context:
- Multiple synchronous or metachronous malignant lesions are a known event in patients with colorectal cancer.
- This population-based study analyzed data from the Geneva area between 1970 and 1986.
Purpose:
- To determine the frequency of synchronous and metachronous colorectal carcinomas.
- To assess the relative risk of metachronous colorectal carcinoma.
- To evaluate the association between adenomatous polyps and multiple colorectal carcinomas.
- To compare survival rates for synchronous, metachronous, and single colorectal carcinomas.
Summary:
- The study found synchronous colorectal carcinomas occurred in 1.1% and metachronous carcinomas in 1% of patients.
- The relative risk for metachronous colorectal carcinoma was elevated compared to the general population.
- A strong association was observed between adenomatous polyps and multiple colorectal carcinomas.
- Five-year survival rates after curative resection were 87% for metachronous, 35% for single, and 33% for synchronous carcinomas.
Impact:
- Complete preoperative colonoscopy is recommended for patients with synchronous colorectal cancer.
- Lifelong follow-up of the residual colon or rectum is essential for detecting metachronous lesions.
- These strategies aim to improve patient outcomes and survival rates in colorectal cancer management.