Primary intrapulmonary thymoma associated with myasthenia gravis.

Primary intrapulmonary thymomas are very rare. So far, research in the field has identified only 31 cases. In all databases, a total of two published articles describing primary intrapulmonary thymoma with myasthenia gravis were encountered between 1950 and 2010. We admitted a 58-year-old male patient with a mass in the right lower lobe of his lung. The tumor was excised, and histological findings were found to be consistent with Type AB thymoma. The patient was intubated due to respiratory distress during the postoperative period, and his acetylcholine receptor antibody was determined positive. He was diagnosed with myasthenia gravis. Pyridostigmine therapy and plasmapheresis were scheduled; yet, we could not begin therapy because of rapid deterioration of the patient's respiratory status due to myasthenia gravis and subsequently resulting in intubation-associated pneumonia. The patient's health rapidly worsened, and he died.