Mortality in patients with obstructing colorectal cancer

Area of Science:

• Oncology
• Surgical Gastroenterology
• Clinical Medicine

Background:

• Colorectal carcinoma is a significant cause of cancer-related morbidity and mortality.
• Bowel obstruction is a common and serious complication of colorectal cancer, impacting patient outcomes.
• Understanding the characteristics and management of obstructive colorectal tumors is crucial for improving survival rates.

Purpose of the Study:

• To analyze the clinical presentation, tumor characteristics, and management outcomes of patients with colorectal carcinoma presenting with obstruction.
• To identify factors influencing perioperative mortality and complications in this patient cohort.
• To evaluate the impact of tumor location on the likelihood of obstruction.

Main Methods:

• Retrospective analysis of 1,033 patients with colorectal carcinoma.
• Identification of patients presenting with bowel obstruction (n=238).
• Review of tumor stage (Dukes B/C), location, surgical management, perioperative mortality, and complication rates.

Main Results:

• 23% of colorectal carcinoma patients presented with obstruction.
• Tumors at the splenic flexure, transverse, and descending colon were most frequently obstructive.
• Perioperative mortality was high (31% for primary resection, 25% for stoma alone), particularly in patients over 70 (40% vs. 20%).
• Cardiorespiratory complications (55%) and technical issues (19%) were major causes of mortality.
• A significant proportion of patients required multiple operations (28% had two, 21% had three).

Conclusions:

• Colorectal cancer-induced bowel obstruction is associated with high perioperative mortality, especially in elderly patients.
• Management strategies for obstructive colorectal cancer require optimization to reduce mortality and complications.
• Tumor location significantly influences the risk of obstruction, necessitating tailored surgical approaches.