# LMT AMI Caused by a Valve-Like Ridge in a 9-Year-Old Boy Successfully Treated With PCI

## TL;DR

A 9-year-old boy had a heart attack caused by a valve-like ridge in his artery, which was successfully treated with a stent.

## Contribution

Demonstrates a rare cause of acute myocardial infarction in children and successful treatment via PCI.

## Key findings

- Intravascular ultrasonography revealed a valve-like ridge causing stenosis in the left main trunk.
- PCI with stent deployment resolved the stenosis and improved the patient's condition.

## Abstract

A 9-year-old boy was suspected of having acute myocardial infarction and emergency coronary angiogram was performed. No signs of flow limitation in either coronary artery was detected. We performed intravascular ultrasonography from the ascending aorta, which showed a ridge on the left main trunk acting like a valve, resulting in significant stenosis. Percutaneous coronary intervention with stent deployment was performed with good result.