Fatal hemopericardial tamponade due to primary pericardial mesothelioma: a case report

Background:Primary mesothelioma of the pericardium comprises less than 1% of all mesothelioma cases. Its typical presentation is insidious, with nonspecific signs and symptoms, and usually results in heart failure due to cardiac tamponade, either by a serous effusion or by direct tumorous constriction of the heart. With the exception of several case reports, the outcome is uniformly fatal, and patients typically die within six months of diagnosis.Case presentationA 45-year-old African American female presented to the emergency department with several days of dizziness, difficulty walking, and low blood pressure. The patient suddenly suffered cardiac arrest, and her death was pronounced. The medical examiner assumed jurisdiction of the case due to the sudden death nature of the case without known medical history. At autopsy, a one-liter hemopericardium was present, and the pericardial sac was thick, granular and adhesed to the heart, suspicious for pericarditis. Microscopic examination of the pericardial tissue instead led to a diagnosis of primary pericardial mesothelioma.Conclusions:Our case demonstrates a pericardial mesothelioma initially masquerading grossly as pericarditis. Microscopic examination of any grossly abnormal pericardial tissue therefore may be warranted so that a neoplastic disease process does not go undetected. Additionally, of the approximately 200 such tumors reported in the medical literature, a case demonstrating marked hemopericardium and resulting in sudden death has not been described until now.

source : www.diagnosticpathology.org

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Submited at Wednesday, December 9th, 2009 at 1:01 pm on Pathology by robert
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