Files
Download Full Text (651 KB)
Description
Papillary endothelial hyperplasia (PEH) is a benign condition of reactive endothelial cell proliferation, usually confined to the vasculature. Its occurrence in the left atrial appendage (LAA) is exceedingly rare.
A 30-year-old male presented with a stab wound to the chest. He underwent a thoracotomy for repair of pulmonary lacerations and lobe resection. Post-extubation, he exhibited left arm weakness. Magnetic resonance imaging (MRI) revealed bilateral ischemic changes. Transesophageal echocardiogram (TEE) noted a hyperechoic structure in the LAA. Cardiac MRI findings were more consistent with a tumor. Patient underwent LAA resection. Pathological examination revealed PEH. No connection was noted between the left atrium and LAA, making air emboli through pulmonary veins during surgical repair the likely culprit for his strokes.
Publication Date
5-9-2025
City
Grand Rapids
Disciplines
Cardiology
Recommended Citation
El Shami M, Saeed M, Ahmed M, Bernal R, Atal A, McNamara R. When appearances deceive: a case of papillary endothelial hyperplasia mass in the left atrial appendage in a patient with ischemic stroke. Presented at: Research Day Corewell Health West; 2025 May 9; Grand Rapids, MI.
Comments
2025 Research Day Corewell Health West, Grand Rapids, MI, May 9, 2025. Abstract 1790