[A case of paragonimiasis with a tumor of the intrathoracic chest wall].

A case of paragonimiasis with a tumor of intrathoracic chest wall was reported. The patient was a 46-year-old male who complained of cough and showed abnormal findings on chest X-ray. After performing various examinations, the patient was diagnosis as having a tumor of the intrathoracic chest wall. On surgery, the tumor was enveloped in a thick capsule and its lumen was filled with yellow-white atheromatous material. Calcification was not found. Pathologically, an egg-like structure of a parasite was confirmed inside the sequestrum attached to the lining of the inner surface of the capsule. Past history of pleuritis and ingestion of freshwater crabs confirmed the diagnosis of paragonimiasis.