[ XXXX hardly differentiated from @entity2 --a case report].

@entity1 @entity662 @entity8995 @entity5 @entity2 @entity1151 @entity1188 @entity2543 @entity1491
A 64-year-old @entity1 experienced high grade fever, @entity662 , and hemosputum. She was admitted to a hospital for evaluation of the infiltrate on an chest X-ray. She was diagnosed as having @entity2 by sputum cytology and transferred to our hospital for operation. The @entity5 was obscure on palpation during thoractomy, but @entity5 could not be ruled out based on analysis of frozen sections. Therefore, a right lower lobectomy and mediastinal lymph node dissection were performed. @entity8995 was not suspected until thrombi were observed in the dissected pulmonary artery. Urokinase and heparin were intravenously administered soon after the operation, but the @entity1 died of @entity1151 of the sixth postoperative day. Examination of the operative specimen revealed @entity1151 with @entity1188 and no evidence of @entity5 . Atypical cells observed in sputum cytology seemed to be derived from @entity1491 in the area of @entity1188 . @entity2543 was observed in the periphery of the @entity1188 . These findings seemed to make accurate analysis of frozen sections difficult. An increasing number of cases of @entity1151 is being reported in Japan. Therefore, @entity8995 with false positive cytology may be encountered more frequently in the future.
