Direct visualization-assisted enteral stent placement in malignant colorectal obstruction: a case report

Area of Science:

• Gastroenterology
• Endoscopic Surgery
• Oncology

Background:

• Malignant bowel obstruction from colorectal cancer is a critical clinical issue.
• Enteral stent placement is a common palliative or pre-surgical treatment.
• Accurate guidewire passage through colorectal strictures is technically demanding.

Purpose of the Study:

• To evaluate the utility of a direct visualization system for guidewire placement in colorectal stenosis.
• To assess the safety and efficacy of the EyeMax system in managing malignant bowel obstruction.

Main Methods:

• A case study involving a patient with sigmoid colon adenocarcinoma and intestinal obstruction.
• Utilized the EyeMax direct visualization system through the biopsy channel for guidewire advancement.
• Performed self-expandable metallic stent deployment under endoscopic visualization without fluoroscopy.

Main Results:

• Successful guidewire passage and stent placement were achieved with immediate symptom relief.
• The patient experienced resumed bowel function and significant pain reduction.
• No perioperative complications or tumor recurrence were observed during 1-year follow-up.

Conclusions:

• The EyeMax system provides real-time intraluminal visualization for precise guidewire placement in complex colorectal strictures.
• This technique enhances procedural safety by reducing reliance on blind manipulation.
• Direct visualization may improve outcomes for patients with malignant bowel obstruction.