An Autopsied Case of Malignant Sarcomatoid Pleural Mesothelioma in Which XXXX Developed Several Months Earlier without Abnormality on Imaging.

@entity1 @entity662 @entity1143 @entity419 @entity510 @entity3620 @entity158 @entity9 @entity1355
UNASSIGNED: The @entity1 experienced @entity662 for about 7 months, but a diagnosis could not be made until after death. He was diagnosed with @entity3620 on autopsy. In this case report, difficult aspects of the diagnosis are discussed. The 70-year-old Japanese @entity1 was a driver who transported ceramic-related products. Right @entity662 developed in July 2013, but no abnormality was detected on a chest computed tomography (CT) performed in September 2013, and the @entity158 was managed as right intercostal @entity9 . A chest CT performed in late October 2013 revealed a right @entity1143 , and the @entity1 was referred to our hospital in early November 2013. Thoracentesis was performed, but the cytology was negative, and no diagnosis could be made. Close examination was postponed because the @entity1 developed a @entity510 . He underwent @entity419 positron emission tomography ( @entity419 PET) after discharge from the neurosurgery department, and extensive right pleural thickening and @entity419 accumulation in this region were observed. Based on these findings, @entity3620 was suspected, and a thoracoscopy was performed under local anesthesia in early December 2013, but no definite diagnosis could be made. The @entity1 selected best supportive care and died about 7 months after the initial development of right @entity662 . The disease was definitively diagnosed as @entity3620 by a pathological autopsy. When chronic @entity662 of unknown cause is observed and past exposure to @entity1355 is suspected, actions to prevent delay in diagnosis should be taken, including testing for suspicion of @entity3620 .
