Clinical study of XXXX .

@entity1 @entity2 @entity1355 @entity456
We analyzed the characteristics of 120 @entity1 of primary @entity2 supposed to be induced by exposure to @entity1355 . Most of 120 @entity1 were male and the age ranged from 47 to 87 years with a median of 70 years. No particular tendency was observed in the histological types of the @entity2 in 120 @entity1 . Forty of the 120 @entity1 were heavy smokers. When the occupational history was analyzed, most of the @entity1 had been exposed to @entity1355 in former Japanese naval shipyard, commercial shipyards, construction industry and ironworks. The term of @entity1355 exposure was 2 to 60 years with a median 27 years. @entity2 appeared after 15 to 69 years with a median 43 years from the initial exposure to @entity1355 . @entity2 was accompanied by @entity1355 in 35 @entity1 and by @entity456 in 77. Twenty-two @entity1 had both @entity1355 and @entity456 . The number of @entity1355 bodies per 5 g wet lung tissue for 72 @entity1 whose lung tissues obtained from autopsy or surgery was more than 150 bodies which meant the number of occupational @entity1355 exposure. As for the kinds of @entity1355 fibers of 32 @entity1 , 14 @entity1 exposed to crocidolite, 10 @entity1 to amosite and 8 @entity1 to chrysotile.
