# Ultrasound Animal Challenge 3 – Which structure does the “tail of a whale” describe?

## Metadata
- Content type: Blog
- Canonical URL: https://123sonography.com/blog/ultrasound-animal-challenge-3-tail-of-whale
- Published: September 26, 2022
- Last updated: November 10, 2022

## Overview
Are you ready for a real “big” teaching point in our Ultrasound Animal Challenge?

## Snapshot
- Category: Cases

## Authors
- [Univ. Prof. Dr. Thomas Binder](/speaker/146) - Medical University of Vienna and founder/CMO 123Sonography, Webinar Moderation

## Content
###

.sonopl-book__aside {
display: none;
}
@media (max-width: 1200px) {
.sonopl-book__content {
padding-top: 0 !important;
}
}
Are you ready for a real “big” teaching point in our Ultrasound Animal Challenge?

![Image of a blue whale.](https://123sonography.com/sites/default/files/styles/article_image/public/image/images/whale-us-animal-challenge.jpeg?itok=g8TxOKGB) ## Which structure does the “tail of a whale” describe?

![Ultrasound image of what looks like a tale of a whale.](https://123sonography.com/sites/default/files/styles/article_image/public/image/images/tale-of-whale.png?itok=M7hGsBCG) **A) Coeliac trunk**

**B) Pancreatic duct**

**C) Common bile duct**

**D) Mesenteric artery**

Want to know the answer? **[Get it here](https://123sonography.com/blog/ultrasound-animal-challenge-3-answer)!**

**Yours,
Ulrike Handler, Thomas Binder and the 123sonography team**

PS: If you missed the previous Animal Challenge posts you can always visit our “zoo”:

- [Tiger-stripe Sign](https://123sonography.com/blog/ultrasound-animal-challenge-1-%E2%80%93-what-tiger-stripe-sign)
- [Snake Sign](https://123sonography.com/blog/ultrasound-animal-challenge-2-snake-sign)