Primary Mediastinal Large B-Cell Lymphoma

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2021-01-23
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Primary mediastinal B-cell lymphoma (PMBL) is a rare subtype of diffuse large B-cell lymphoma (DLBCL; see this term), arising from B cells of thymic origin, that affects mainly women between the ages of 20-30, that usually presents with a bulky and rapidly expanding anterior mediastinal mass, often with pleural and pericardial effusions, and that can invade the lungs, superior vena cava, pleura, pericardium, and chest wall, leading to manifestations of cough, dyspnea, and superior vena cava syndrome.