Prognosis in patients with obstructing colorectal carcinoma

Area of Science:

• Oncology
• Gastroenterology
• Surgical Oncology

Background:

• Colorectal carcinoma is a significant cause of morbidity and mortality worldwide.
• Bowel obstruction is a severe complication of colorectal cancer, often indicating advanced disease.
• Understanding the impact of obstruction on treatment outcomes is crucial for improving patient survival.

Purpose of the Study:

• To compare the curability and survival rates of patients with colorectal carcinoma presenting with bowel obstruction versus those without obstruction.
• To identify factors contributing to differences in outcomes between these patient groups.
• To evaluate the impact of surgical resection methods on survival in obstructed patients.

Main Methods:

• Retrospective analysis of 1,061 patients with colorectal carcinoma diagnosed between 1950 and 1979.
• Comparison of a cohort of 148 patients with bowel obstruction against those with nonobstructive tumors.
• Analysis of age, sex, tumor stage, treatment modality, operative mortality, and 5-year survival rates.

Main Results:

• Patients with obstruction had lower curability (53% vs. 72%) and 5-year survival rates (16% overall vs. 37%).
• Obstructed patients more frequently presented with advanced Stage C lesions compared to nonobstructed patients (Stage A).
• Five-year survival rates were 19% after primary resection and 35% after staged resection for curable obstructed patients.

Conclusions:

• Bowel obstruction secondary to colorectal carcinoma is associated with poor curability and survival.
• Advanced disease stage at diagnosis is the primary driver of worse outcomes in obstructed patients.
• Treatment strategies and timely intervention are critical for improving the prognosis of colorectal cancer patients with bowel obstruction.