Cardiac Tamponade as a Manifestation of Clear Cell Renal Cell Carcinoma.

Some solid cancers (such as lung, breast, and esophageal cancer, and melanoma) can lead to pericardial effusion by metastatic spread, potentially provoking hemodynamic instability. Detection by echocardiography is therefore essential. Pericardiocentesis can help restore cardiac function and provide fluid for establishing an etiology through cytological, microbiological, and cellularity analysis. A 60-year-old woman with metabolic syndrome and obesity hypoventilation syndrome presented to the emergency department with dyspnea at rest. A chest X-ray showed cardiomegaly and massive left pleural effusion. Ultrasound findings were pericardial effusion with signs of cardiac tamponade. We performed pericardiocentesis, extracting 1000 mL of exudate, and thoracentesis, which confirmed the diagnosis of lymphocytic exudative effusion. A CAT (computerized tomography) scan of the chest, abdomen, and pelvis revealed a left kidney mass. A biopsy of the mass confirmed the diagnosis of clear cell renal cell carcinoma and a pleural biopsy revealed metastatic involvement. This report describes a rare presentation of cardiac tamponade due to clear cell renal cell carcinoma and discusses the pathogenesis, mechanisms, and prognosis of this condition.