Pericardial Mesotheliomas

Area of Science:

• Oncology
• Pathology

Background:

• Primary pericardial mesothelioma (PM) is a rare tumor (<0.05% incidence), the most common primary pericardial malignancy.
• Distinguishing PM from secondary involvement is crucial, as asbestos association is less documented than other mesotheliomas.
• Late presentation with nonspecific symptoms related to cardiac constriction or tamponade is common.

Purpose of the Study:

• To review the epidemiology, diagnosis, histology, and prognosis of primary pericardial mesothelioma.
• To highlight diagnostic challenges and the importance of tissue sampling and immunohistochemistry.
• To underscore the poor prognosis and limitations in research due to PM's rarity.

Main Methods:

• Review of existing literature on primary pericardial mesothelioma.
• Analysis of diagnostic modalities including echocardiography, CT, and MRI.
• Histopathological classification and immunohistochemical markers.

Main Results:

• PM presents with thickened, enhancing pericardium, often encasing the heart, leading to constrictive physiology.
• Histologically classified as epithelioid, sarcomatoid, or biphasic (most common).
• Poor prognosis with approximately 22% 1-year survival.

Conclusions:

• Primary pericardial mesothelioma is a rare, challenging diagnosis with poor outcomes.
• Multimodality imaging and tissue analysis are essential for accurate diagnosis.
• Further research is needed to improve understanding and treatment, despite rarity limitations.