290 



THE MICROSCOP1ST. 



derived from connective tissue. It is not at all improba- 

 ble that any kind of bioplasts, as Beale maintains, may 

 form such growths by rapid proliferation, although the 

 weight of evidence justifies us in regarding epithelial 

 structure as the most frequent origin. The two follow- 

 ing figures from Rindfleisch shows two different forms of 

 origin in carcinoma of the liver. Fig. 236 shows the nor- 



FlG. 236. 



Carcinoma hepatis. The production and structure of pigmented radiary cancer. The 

 liver-cell net forms the first foundation of the stroma, while the cancer-cells are de- 

 posited in the lumen of the vessels. 1-400. After RINDPLEISCH. 



mal liver-cell as furnishing the first foundation of the 

 strorna, while the cancer-cells are found in the vessels. 

 The liver-cells are generally pigmented. The spindle- 

 formed and stellate cells which are also seen in the more 

 delicate trabeculse of the stroma have nothing to do with 

 the liver-cells. In common cancer of the liver the vessels 

 form the origin of the stroma, while the cancer-cells come 

 from the liver-cells (Fig. 237). 



