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Delayed Cardiac Herniation after Partial Thymectomy.

Marissa Borgese¹, Justin D Blasberg², Cristina Fuss¹

¹Department of Radiology and Biomedical Imaging, Yale School of Medicine, 330 Cedar St, Tompkins East TE-2, New Haven, CT 06520.

Radiology. Cardiothoracic Imaging

|December 11, 2025

Summary

This summary is machine-generated.

Cardiac herniation, the heart moving through a pericardial defect, requires prompt diagnosis. Advanced imaging like CT angiography and MRI are crucial for identifying this rare but serious complication.

Keywords:

Cardiac Complications Pericardium

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Area of Science:

Cardiology
Radiology
Thoracic Surgery

Background:

Cardiac herniation is the displacement of the heart through a pericardial defect.
This condition can arise from congenital, traumatic, or iatrogenic causes.
Early recognition and treatment are vital for reducing morbidity and mortality.

Purpose of the Study:

To present a case of cardiac herniation in a patient with a history of thymectomy.
To highlight the role of advanced imaging in diagnosing cardiac herniation.
To emphasize the importance of timely intervention for pericardial defects.

Main Methods:

Case report of a 29-year-old patient presenting with chest pain.
Utilized Coronary CT angiography for initial assessment.
Employed cardiac MRI for detailed cardiac structure and function evaluation.
Confirmed diagnosis with intraoperative inspection of the pericardial defect.

Main Results:

Cardiac herniation was diagnosed in a patient post-thymectomy.
Imaging demonstrated characteristic waistlike narrowing of the ventricles.
A significant circumferential pericardial defect with left ventricular protrusion was identified.
The diagnosis was confirmed during surgical exploration.

Conclusions:

Cardiac herniation is a rare but critical condition requiring prompt diagnosis.
Coronary CT angiography and cardiac MRI are invaluable tools for its detection.
Surgical intervention is necessary for significant pericardial defects causing cardiac herniation.