Case Report: Successful endoscopic resection of a huge rectal tumor extending to the dentate line and associated with a diverticulum by endoscopic submucosal dissection

Key Takeaways for GI Nurses

• Endoscopic submucosal dissection (ESD) can be successfully performed for complex rectal lesions extending to the dentate line, even when complicated by diverticular disease
• Large rectal tumors near the anal verge require enhanced pre-procedural preparation and specialized positioning techniques to optimize visualization and access
• ESD procedures for huge rectal lesions demand extended procedure times and meticulous patient monitoring throughout the lengthy resection process
• Post-procedural care must include vigilant assessment for bleeding and perforation risks, particularly when the resection involves areas with associated diverticular changes

Clinical Relevance

This case demonstrates the expanding capabilities of therapeutic endoscopy in treating complex colorectal pathology that traditionally required surgical intervention. For GI nurses, this represents a significant shift in care paradigms, as patients with large rectal tumors extending to the dentate line can now potentially avoid more invasive surgical procedures. The successful completion of ESD in this challenging anatomical location requires nurses to be proficient in advanced endoscopic techniques and understand the unique considerations for procedures performed near the anal verge, including patient positioning, scope manipulation, and comfort management during extended procedures.

The presence of associated diverticular disease adds another layer of complexity that directly impacts nursing care protocols. Nurses must be particularly vigilant during pre-procedural assessment to identify patients with diverticular changes, as these areas may be more prone to complications during submucosal dissection. This case underscores the importance of comprehensive patient evaluation and the need for nurses to understand how concurrent pathology can influence procedural approach and post-procedure monitoring requirements.

From an operational standpoint, successful ESD procedures for huge rectal lesions require significant resource allocation, including extended procedure room time, specialized equipment preparation, and potentially increased staffing needs. Nurses must be prepared for longer procedures that may require multiple breaks for patient repositioning and comfort measures. Additionally, the complexity of these cases necessitates enhanced post-procedural monitoring protocols and patient education regarding signs and symptoms of potential complications, particularly delayed bleeding or perforation.

Bottom Line

This case report validates that even complex, large rectal tumors extending to the dentate line with associated diverticular disease can be successfully managed through endoscopic submucosal dissection, highlighting the continued evolution of therapeutic endoscopy and the critical role of skilled GI nurses in supporting these advanced procedures through comprehensive pre-procedural preparation, vigilant intra-procedural monitoring, and thorough post-procedural care protocols that account for the increased complexity and potential complications associated with resecting huge lesions in challenging anatomical locations.