# Type R1 Single Coronary Artery Without Obstructive Disease: A Multimodal Imaging Approach

## TL;DR

A 73-year-old man with a rare heart condition called single coronary artery was diagnosed using advanced imaging techniques.

## Contribution

The paper highlights the use of multimodal imaging to evaluate a rare coronary anomaly and its clinical implications.

## Key findings

- Computed tomography and coronary angiography showed no obstructive lesions in the single coronary artery.
- The patient was managed medically to reduce symptoms and coronary disease risk.

## Abstract

Single coronary artery is a congenital anomaly defined by a solitary artery supplying the heart. It may present as angina in the absence of coronary obstruction. A 73-year-old man presented to our institution with chest pain and exertional dyspnea. He was ultimately found to have a single coronary artery arising from the right coronary cusp (type R1). Multimodal imaging, including computed tomography and coronary angiography, revealed no flow-limiting lesions. The patient was medically managed to optimize coronary disease risk and to minimize symptoms. This case underscores the clinical relevance of anatomical coronary variants and the role of imaging in evaluating symptoms in this subset of the population.