Malignant colo-duodenal fistula: management based on proposed classification

Area of Science:

• Gastroenterology
• Surgical Oncology
• Colorectal Surgery

Background:

• Colonic malignancy rarely involves the duodenum, presenting surgical challenges, especially in malnourished patients.
• Malignant colo-duodenal fistula formation is an uncommon complication of colorectal cancer.

Purpose of the Study:

• To classify patterns of duodenal involvement in malignant colo-duodenal fistula.
• To evaluate surgical management strategies and outcomes for malignant colo-duodenal fistula.

Main Methods:

• Retrospective review of nine patients with malignant colo-duodenal fistula.
• Classification of duodenal involvement into Type I, II, and III based on extent and location.
• Analysis of surgical techniques (sleeve resection, segmental resection, pancreaticoduodenectomy) and patient outcomes.

Main Results:

• Eight of nine patients had anemia and/or hypoproteinemia.
• Right colon tumors were most common (8/9 patients).
• CT abdomen was the primary diagnostic tool (7/9 patients).
• Sleeve resection (5/9), segmental resection (2/9), and pancreaticoduodenectomy (2/9) were performed.
• All resections achieved negative margins.
• Median survival was 14 months for the eight survivors.

Conclusions:

• Surgical management of malignant colo-duodenal fistula must be tailored to the specific pattern of duodenal involvement.
• Negative resection margins are achievable with various surgical approaches, including sleeve resection.
• En bloc pancreaticoduodenectomy may be necessary for extensive duodenal involvement.