[Clinicopathologic analysis of 487 XXXX ].

@entity1 @entity1377 @entity175 @entity242 @entity5 @entity189 @entity652 @entity259
In this paper, 487 cases of @entity259 , 387 (79.5%) benign and 100 (20.5%) malignant, were analysed clinicopathologically. @entity5 was divided into three types: papillary, follicular and atypical @entity652 ; @entity5 into five types: papillary, follicular, undifferentiated, medullary and squamous @entity5 . In the benign variety, follicular @entity652 had the highest incidence (98.2%) and in the @entity5 , @entity5 ranked first (62%). In this series, there were two cases of carcino- @entity242 . The sex ratio of male and female was 1:1.62 for the whole series, 1:1.70 for benign and 1:1.38 for @entity5 . The peak age was 21 to 40 years with a median of 35 for benign and 31 to 50 years with a median of 43 for @entity5 . For @entity1377 , the @entity1 over 40 years of age comprised 50%. The typing of benign and @entity5 is discussed. It is proposed that the @entity5 be classified according to histomorphology. @entity175 by immunohistochemical technic or neural secretory granules by electron microscopy gives the most reliable evidence to diagnosis of the @entity189 .
