# Post by NEJM (@NEJM)

**By:** NEJM (@NEJM)  
**Published:** 2026-07-15T22:00:18.000Z  
**Source:** [X](https://x.com/i/status/2077513615112835302)

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Post by NEJM (@NEJM)

A man presented with a 2-month history of chest heaviness and a 2-week history of shortness of breath. Pulsations were visible between his ribs (shown in a video). Ultrasonography revealed a rounded structure near the heart.

Read the full case details in the Images in Clinical Medicine article “Descending Thoracic Aortic Aneurysm”: https://t.co/JMh55acAJM

Media

Image - Two medical images from the Images in Clinical Medicine article "Descending Thoracic Aortic Aneurysm." Panel A shows a radiograph of the chest with a large, rounded opacity occupying the left hemithorax. Panel B presents CT angiography of the chest with a large, fusiform aneurysm in the descending thoracic aorta. - Image URL: https://pbs.twimg.com/media/HNTPm07X0AEIcgY.jpg

Open on X: https://x.com/NEJM/status/2077513615112835302