A Case of Huge Benign Localized Mesothelioma in which an Abnormal Shadow Had Been Recognized Since 43 Years Ago

Abstract

A 63-year-old male patient was admitted to our hospital because of a chest roentgenographic abnormality, which had been recognized every year since 43 years ago. Plain films of the chest showed a huge mass in the lower field of the right lung. The physical examination and laboratory data showed no abnormalities. Bronchogram demonstrated no communication between the mass and the tracheobronchial trees. At thoracotomy, a 10×8×6cm tumor was attached to the pulmonary pleura and the parietal pleura.
The histology of this tumor showed benign mesothelioma.