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Prognosis in synchronous colorectal carcinomas.

H E Wagner¹, P A Barbier, P J Luder

¹Department of Visceral Surgery, Inselspital, Bern, Switzerland.

Zeitschrift Fur Gastroenterologie

|February 1, 1988

Summary

Synchronous colorectal carcinomas, often detected early due to rectal bleeding, show a better 5-year survival rate compared to single colorectal cancers. This suggests earlier diagnosis significantly impacts patient outcomes.

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Area of Science:

Gastroenterology
Surgical Oncology
Oncology

Background:

The prognosis of synchronous colorectal carcinomas remains debated, with conflicting reports on survival rates compared to single carcinomas.
Understanding the characteristics and outcomes of patients with multiple primary colorectal tumors is crucial for improving clinical management.

Purpose of the Study:

To investigate the clinicopathological features and survival outcomes of patients diagnosed with synchronous colorectal carcinomas.
To compare the survival rates of patients with synchronous colorectal carcinomas versus those with single colorectal carcinomas.

Main Methods:

A retrospective review of 736 cases with histologically confirmed colorectal malignancies.
Analysis of patient data including tumor location, presence of associated adenomas, lymph node status, distant metastases, and treatment procedures.
Comparison of 5-year survival rates between patients with multiple primary tumors and those with single carcinomas.

Main Results:

22 patients (3%) presented with synchronous colorectal carcinomas.
Patients with multiple tumors had a significantly higher association with adenomas (72% vs 14%, P < 0.01).
The overall 5-year survival rate was higher for synchronous carcinomas (54.5%) compared to single carcinomas (44.5%).
Early detection, potentially due to rectal bleeding, appears to contribute to the better survival in synchronous cases.

Conclusions:

Synchronous colorectal carcinomas may have a better prognosis than single carcinomas, likely attributed to earlier detection.
The higher incidence of associated adenomas in patients with synchronous tumors warrants further investigation.
Radical surgical procedures were performed in a majority of patients (82%) with synchronous tumors.

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