# Small Intestine Tumors: Diagnostic Role of Multiparametric Ultrasound

## TL;DR

This review discusses how ultrasound can help diagnose rare small intestine tumors, highlighting its underused potential compared to other imaging methods.

## Contribution

The paper emphasizes the underutilized diagnostic value of modern transabdominal ultrasound for small intestine tumors.

## Key findings

- Ultrasound can detect wall thickening, loss of wall stratification, and luminal stenosis in small intestine tumors.
- US can also identify dilatation of proximal small-intestinal segments and associated lymphadenopathy.
- The review advocates for increased use of ultrasound in the diagnostic workflow for these rare tumors.

## Abstract

Small intestine tumors are rare. The four main groups include adenocarcinomas, neuroendocrine neoplasms (NEN), lymphomas, and mesenchymal tumors. The jejunum and ileum can only be examined endoscopically with device-assisted enteroscopy techniques (DAET), which are indicated only when specific clinical or imaging findings are present. The initial diagnosis of tumors of the small intestine is mostly made using computed tomography (CT). Video capsule endoscopy (VCE), computed tomography (CT) enterography, and magnetic resonance (MR) enterography are also time-consuming and costly modalities. Modern transabdominal gastrointestinal ultrasound (US) with high-resolution transducers is a dynamic examination method that is underrepresented in the diagnosis of small intestine tumors. US can visualize wall thickening, loss of wall stratification, luminal stenosis, and dilatation of proximal small-intestinal segments, as well as associated lymphadenopathy. This review aims to highlight the role and imaging features of ultrasound in the diagnosis of small-intestinal tumors.