<prompt> Myasthenia gravis is associated withThymomaThymic carcinomaThymic hyperplasiaLymphoma  <response>: Some 60of Myasthenia gravis are associated with a peculiar reactive hyperplasia of intrathymic B cells and another 20are associated with thymoma, a tumor of thymic epithelial cells. Robbins basic pathology 9th edition page no 800,heading Myasthenia gravis Option 4 is correct 