TUMORS. 



371 



FIG. 335. 



'^^^^^^^ ^ 





Leiomyoma of the uterus. (Birch-Hirschfeld.) 



cular tissue. They are common in the uterus, but may occur in the 



FIG. 336. 



Rhabdomyosarcoma of the kidney : a, a, a, imperfectly developed striated muscle-fibres ; 6, 

 tissue composed of small round and spindle-shaped cells, separated by considerable deli- 

 cate fibrous intercellular substance. In other parts of the growth, which was the size 

 of the fist, this tissue was more distinctly sarcomatous and the amount of muscular tissue 

 smaller. The child from which this tumor was removed was about two years old. 



intestinal walls, the urinary tract, or the skin. When pure, or when 

 associated with fibrous tissue alone, they are benign. 



