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Lymphomatoid Granulomatosis

Background

Lymphomatoid granulomatosis (LYG) is a rare Epstein-Barr virus–associated systemic angiodestructive lymphoproliferative disease. It is characterized by prominent pulmonary involvement but can also involve multiple extrapulmonary sites.

Originally described among diseases characterized by pulmonary angiitis and granulomatosis, it mimics Wegener granulomatosis (WG) both clinically and radiographically. However, recent advances have characterized lymphomatoid granulomatosis as a B-cell lymphoma and have provided etiologic insights that may lead to therapeutic advances.

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