Ultrasonic manifestations of diffuse pericardial mesothelioma masquerading as pericardial effusion: a case report. (PubMed, Front Oncol) - Oct 24, 2026 - "Nivolumab immunotherapy showed no improvement...Patients with recurrent unexplained pericardial effusion and atypical sonographic features, such as flocculent echoes and irregular pericardial thickening, should raise suspicion for PPM. Early recognition of these signs and timely pathological confirmation are critical to avoid diagnostic delays and may improve outcomes." Journal • Cardiovascular • Mesothelioma • Oncology • Pain • Solid Tumor
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