# Yearlong Near-Syncope: Presentation of a Rare Right Atrial Myxoma

## TL;DR

A rare case of a right atrial myxoma causing long-term near-syncope symptoms is reported in a 67-year-old woman.

## Contribution

This case highlights the importance of considering right atrial myxomas in the differential diagnosis of persistent syncope-like symptoms.

## Key findings

- A 4.3 x 4.0 cm right atrial myxoma was diagnosed in a patient with yearlong near-syncope.
- Surgical resection and immunohistochemistry confirmed the diagnosis of myxoma.
- The case emphasizes the need to include right atrial myxomas in syncope differentials.

## Abstract

Atrial myxomas are the most common form of primary benign cardiac tumors. The left atrium is typically the most common location while right atrial myxomas are much rarer and only occur in about 15%-25% of all myxoma patients. Typically, left atrial myxomas have the ability to cause symptoms such as syncope. We report a case of a 67-year-old female who presented with complaints of palpitations, dizziness, and near-syncope that had been ongoing for about a year. Other causes of syncope were investigated and ruled out. A transthoracic echocardiogram (TTE) found a large 4.3 x 4.0 cm spherical mass in the right atrium which was confirmed by surgical resection and immunohistochemistry to be a myxoma. The patient's condition of syncope-like symptoms warrants elevating atrial myxomas to a higher position in the diagnostic differential.