Dermatomyositis associated with thymoma: A case report and literature review.

Thymoma can present with paraneoplastic-autoimmune neuro-muscular disorders, including polymyositis, dermatomyositis, and granulomatous myositis. Rarely, concomitant subclinical myasthenia gravis (MG) can be a diagnostic dilemma and cause deleterious outcomes regarding missed or delayed diagnosis. We report a Turkish patient presented with thymoma associated dermatomyositis and positive acetylcholine receptor antibody without evident MG clinic.