320 



TUMORS. 



Mucous degeneration is frequent in the various forms of sarcoma. A 

 combination of myxoma and sarcoma my xo- sarcoma is common (see 

 Fig. 161). 



Combinations of sarcoma with fat tissue, lipo-sarcoma ; with glandu- 





.' - Ti 5 ,/ 



FIG. 161. MYXO-SARCOMA OF THE PAROTID. 



lar structure, adeno-sarcoma (Fig. 162) ; with cartilage, chondro- sarcoma ; 

 with muscle tissue, myo-sarcoma ; and with various other tissues, are of 

 frequent occurrence. Some forms of psammoma, or "brain sand," found 

 chiefly in the dura mater, are Jibro-sarcomata which have undergone cal- 

 cification, the lime being deposited in lainellated masses of various shapes 

 within them. 



Some of the soft papillomata and warts, and occasionally the polypi 



FIG. 162. ADENO-SARCOMA OF PAROTID. 



of the mucous membranes, belong to the type of sarcoma or myxo- 

 sarcoma. 



The so-called chloromata, which have been found in a variety of places 

 in the body, but are rare, are apparently forms of sarcoma. Chlor- 



