Intrathoracic omental herniation (ITOH) is the herniation of the omentum through the esophageal hiatus without herniation of the stomach. It is a rare disease and serious complications due to ITOH have not been reported in the literature. Here, we reported the case of 47-year old man who presented to the emergency department with dyspnea and chest pain. Enhanced computed tomography (CT) demonstrated a large retrocardiac mass and ITOH was suspected. During the observation period in the emergency department, the patient's condition rapidly deteriorated. Follow-up CT showed large parapneumonic effusion and empyema. Emergency surgery was performed and the omental sac was removed. The patient's vital signs were restored and his symptoms were relieved. He was discharged on hospital day 15 without complications. Emergency physicians should be aware that severe complications of ITOH could develop and that if the patient's symptoms and vital signs worsen, emergency surgery should be considered.
Keywords: Emergency departments; Empyema; Hernia; Omentum; Operation.
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