TUMORS. 



385 



The latter may so greatly preponderate over the epithelium that 

 there is a possibility of mistaking the tumor for a simple fibroma. 



FIG. 353. 



Carcinoma simplex mammee. (Kaufmann.) In this growth the stroma is well developed and 

 divides the tumor into a number of intercommunicating alveoli, filled with epithelial 

 cells. 



Care must be taken not to confound these carcinomata with the 

 intracanalicular adenofibromata already described. In the carcinoma 



FIG. 354. 





m t 







Scirrhous carcinoma of the breast. (Ribbert.) The bulk of the section Is composed of dense 

 fibrous tissue, in which there area few rows of epithelial cells, a. 



there is no ingrowth of fibrous tissue into the alveoli, as in the 

 case of the adenofibroma. The development of the fibrous tissue in 



2;') 



