Welcome back, dear listeners, to another episode of the Gastroenterology and Endoscopy podcast where we delve deep into the world of endoscopic procedures, sharing insights, techniques, and expert advice for all you gastroenterology enthusiasts out there. Today we’ve got quite an interesting topic on our hands - a case involving a pedunculated duodenal adenoma located in the second part of the duodenum.

Now, for those of you who might be wondering, “What’s so special about this case?” Well, these types of polyps present a unique challenge for endoscopists, and it’s crucial to plan meticulously to ensure a successful and complication-free procedure. So, without further ado, let’s dive right in.

First things first, when we're faced with a larger sessile or pedunculated polyp, especially one located in the distal duodenum, the goal is to achieve a complete (R0) resection. This means we're aiming to remove the entire lesion, leaving behind no microscopic remnants. However, as we embark on this mission, there are two main concerns: what to do once the polyp is resected and how to handle any potential complications, such as bleeding and perforation.

Now, to prevent the polyp from migrating distally into the bowel, which could complicate things further, there are a couple of strategies we could employ. One is to place the patient in a decubitus supine position. Alternatively, we could use an anti-motility agent like glucagon to temporarily slow down the bowel movements.

Additionally, both the endoscopist and the assistant need to be on high alert, ready to catch the polyp with the snare once it’s resected. Having a Roth’s net on standby is also a smart move, providing a quick and reliable way to catch the polyp if needed. A personal trick I like to use is attaching a distal transparent cap on the scope, performing the resection through it, and then suctioning part of the polyp into the cap for easy retrieval.

Now, moving on to preventing complications. First and foremost, submucosal injection is your best friend. Ideally, you'd want to use a saline-epinephrine mix at a ratio of 1:100,000. This not only raises the lesion, creating a safer distance from the muscular propria but also decreases intraprocedural bleeding, providing a cleaner field of operation.

Another fantastic option is underwater resection. By allowing the neoplasm to float, we reduce the chances of transmitting electrosurgical current to the base of the lesion, minimizing the risk of perforation. Plus, the water helps dissipate the electrosurgery currents from the snare, reducing thermal damage to the surrounding tissue.

For pedunculated polyps like this one, a prophylactic endoloop can work wonders. And when it comes to closing the wound post-resection, clips are a must. Duodenal endoscopic resections are notorious for both immediate and delayed bleeding complications. On occasions where the resection site is broad and large, I have also utilized hemostatic hydrogels like Purastat, particularly for patients on anticoagulation.

Now, a high dose of proton pump inhibitors for the first 2-3 days post-procedure is advisable, and it’s generally a good practice to continue the PPI for about a month to aid in the healing process.

Lastly, always be mindful of the polyp’s proximity to the papilla of Vater. Ensure it’s not an ampullary lesion and plan your resection accordingly. In some cases, a side-viewing endoscope might offer better visibility and ensure a complete R0 resection.

And there you have it, folks! A comprehensive guide on tackling pedunculated duodenal adenomas. Always remember, preparation is key, and having a plan in place for every scenario will ensure the best possible outcome for your patient.

That wraps up today’s episode. I hope you found this discussion insightful and helpful for your practice.