# The Duodenal Accessory Ampulloma and the Role of Endoscopic Retrograde Cholangiopancreatography (ERCP) in Familial Adenomatous Polyposis Coli Inheritance

## TL;DR

This paper describes a rare case of adenomatous growth in the accessory duodenal ampulla in a patient with FAP, successfully treated with ERCP.

## Contribution

The paper presents a unique case of accessory ampullary involvement in FAP managed via ERCP.

## Key findings

- Adenomatous growth was found in the accessory duodenal ampulla of a FAP patient post-colectomy.
- The lesion was successfully removed using ERCP with a temporary stent to prevent pancreatitis.

## Abstract

The adenomatous lesions, which could be benign or malignant, have been described in the duodenum and along the duodenal ampulla in individuals with familial adenomatous polyposis (FAP) post-colectomy, along with other extracolonic manifestations. To our best knowledge, we present a unique case of the involvement of the accessory duodenal ampulla in a patient who had undergone colectomy with ileorectal anastomosis with an established diagnosis of FAP. During the endoscopic examination, the patient was found to have adenomatous growth in the accessory duodenal ampulla, which was successfully removed via endoscopic retrograde cholangiopancreatography (ERCP). To prevent pancreatitis, a temporary plastic stent was inserted and successfully removed three weeks later.