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A peculiar presentation of tamponade: pericardial mesothelioma
Syed Danial Syed Ahmad1, Frazer Kirk1, Wisalya Wijesinghe2
1Department of Cardiothoracic Surgery, Gold Coast University Hospital, Level 4, D Block, Gold Coast University Hospital, 1 Hospital Boulevard, Gold Coast 4215, Australia.
Abstract:
Pericardial mesothelioma (PM) is rare with only 200 cases recorded, and a post-mortem prevalence of <0.0022%. It is the third most common cardiac/pericardial tumour, behind angiosarcoma and rhabdomyosarcoma. PM incidence increases with age, typically incidentally diagnosed between 50 and 70 years, with a 3:1 male predominance. Occasional PM can cause chest pain, dyspnoea, cough and even dysphagia. PMs are often misdiagnosed with only 25% of cases being antemortem diagnoses. Unlike pleural mesothelioma, the link between asbestos exposure and malignancy is less convincing, with only 20% of cases having known exposure. 6 There are three histological types: epithelioid, fibrous (spindle cell), and biphasic (mixed). The average life-expectancy post diagnosis is 3-10 months. Due to the heterogeneity of the presentation and rarity there is no standardized management algorithm, and the diagnostic imaging or laboratory investigations are scarcely described. We are presenting one of the cases diagnosed in our unit here in the Gold Coast.
Insights
Pericardial mesothelioma (PM) is a rare cancer, often incidentally found in older adults. Diagnosis is challenging, with limited understanding of its causes and no standard treatment approach.
Area of Science:
- Oncology
- Cardiovascular Pathology
Background:
- Pericardial mesothelioma (PM) is an exceptionally rare malignancy, with fewer than 200 documented cases.
- It ranks as the third most frequent tumor of the heart or pericardium, following angiosarcoma and rhabdomyosarcoma.
Observation:
- PM typically affects individuals aged 50-70, showing a 3:1 male predominance, and is often discovered incidentally.
- Symptoms may include chest pain, dyspnea, cough, and dysphagia, but diagnosis is frequently delayed, with only 25% identified before death.
- The association with asbestos exposure is less pronounced than in pleural mesothelioma, with only 20% of cases reporting known exposure.
Findings:
- Histologically, PM presents in three forms: epithelioid, fibrous (spindle cell), and biphasic (mixed).
- The average survival post-diagnosis is a mere 3-10 months.
- Management protocols are not standardized due to rarity and varied presentations; diagnostic imaging and laboratory findings are infrequently detailed.
Implications:
- The rarity and heterogeneous presentation of PM necessitate further research into standardized diagnostic and management strategies.
- Understanding the etiology and improving early detection are crucial for potentially improving patient outcomes.
- Case studies, like the one presented, are vital for advancing knowledge on this rare cardiac tumor.
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