Study on histogenesis of XXXX .

@entity530 @entity1870 @entity46 @entity43
The histogenesis of @entity530 can not be sufficiently accounted for by a single theory. Thus it may be necessary to pressure plural theories for the explanation of their histogenesis. On collected 253 cases of @entity46 , some clinical and pathological studies were carried out and classified to @entity1870 (A) 37%, @entity43 ( @entity43 ) 17%, and others (A+ @entity43 ) 45%. Age of the group @entity43 @entity1870 (A) 37%, @entity43 ( @entity43 ) 17%, and others (A+ @entity43 ) 45%. Age of the group @entity43 tended to be younger, as compared with other groups. Pathological study revealed that in group (A+ @entity43 ), the lesion tended to be younger, as compared with other groups. Pathological study revealed that in group (A+ @entity43 ), the lesion in uterine wall was extensive and deep proliferation in many cases, and it was frequently more at least than group A. Especially, it is necessary to distinguish from each other two different cases which showed @entity43 , that is, to distinguish them by the presence or absence of @entity1870 . In the case of group @entity43 complicated by A, it is thought highly probable that discrete dissemination may take place from the foci of @entity1870 . In the case of group @entity43 there may be sufficient room for the application of the Sampson's theory or metaplastic theories. In view of conspicuous trait in the age, however, the possibility of lymphogenous dissemination of @entity46 may be valuable.
