A case of recurrent thymoma with double paraneoplastic syndromes: are antibodies better than clinical judgement in predicting thymoma relapse?

The co-existence of paraneoplastic CASPR2-antibody mediated Morvan Syndrome(MoS) and myasthenia gravis(MG) with thymoma is extremely rare. We report the case of an elderly male with an autoimmune thymoma-associated MG, whose myasthenic symptoms relapsed after eight years of thymectomy with the co-occurrence of MoS.