[A case of inflammatory pseudomotor of the lung suspected of being metastasis of thymoma].

An operated case of inflammatory pseudotumor of the lung is reported. A 27-year-old female was pointed out a coin lesion in the left lower lung field on chest X-ray and the size of mass increased. She had a history of thymomectomy for thymoma, and resection of right intrathoracic dissemination. Therefore operation was performed on suspicion of metastasizing thymoma. A partial resection including the mass with VATS was performed and histopathologic examination revealed inflammatory pseudotumor. The postoperative course was uneventful, and there has been no evidence of recurrence thereafter. In Japan, sixty-eight cases of inflammatory pseudotumor of the lung including our case have been reported in the literature.