# Preoperative diagnosis of ileal duplication cyst in an adult using dynamic imaging and treatment with single-incision laparoscopic surgery

## TL;DR

A rare case of an ileal duplication cyst in an adult was diagnosed using imaging and successfully treated with minimally invasive surgery.

## Contribution

Demonstrates the effectiveness of dynamic imaging and single-incision laparoscopic surgery for diagnosing and treating rare adult gastrointestinal duplications.

## Key findings

- Dynamic imaging identified a 6-cm cystic lesion with peristaltic movement and layered wall structure.
- Single-incision laparoscopic surgery successfully resected the cyst with no complications.
- Histology confirmed a non-communicating duplication cyst with smooth muscle and columnar epithelium.

## Abstract

We report a rare case of an ileal duplication cyst diagnosed preoperatively in a 72-year-old woman who presented with incidental hematuria. Imaging studies including abdominal ultrasonography and magnetic resonance imaging (MRI) revealed a 6-cm cystic lesion exhibiting peristaltic movement and layered wall structure, suggestive of an alimentary duplication cyst. Based on these characteristic findings, a single-incision laparoscopic resection of the cyst and adjacent ileum was performed without complications. Histological examination confirmed a non-communicating cystic duplication with smooth muscle and columnar epithelium. The patient recovered uneventfully. This case highlights the diagnostic value of dynamic imaging—particularly ultrasound and MRI—in detecting rare gastrointestinal duplications in adults, and supports minimally invasive resection as a safe and effective treatment strategy.