Farid Zand - Anesthesiologist, Anesthesiology and Critical Care Research Center, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
Mohammad Reza Sasani - Radiologist, Medical Imaging Research Center, Department of Radiology, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
Shahrbanoo Shahbazi - Anesthesiologist, Anesthesiology and Critical Care Research Center, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
Kamran Hojabri - Resident of Anesthesiology, Department of Anesthesia, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran

Right atrial dilation due to left heart disease is a common complication among adults. The present review aimed to describe a case of massively dilated right atrium in a female patient presenting with valvular heart disease and no atrial fibrillation. The results of chest X-ray revealed a large opacity filling the lower right hemithorax, falsely interpreted as a mediastinal mass. During the transesophageal echocardiography, severe enlargement of the right atrium was detected, and open mitral and tricuspid valve replacements were performed successfully.

Chest X-ray, echocardiography, Heart Atria, Mass, Mediastinal Disease