290 PATHOLOGY OF NUTRITION. 



Table : 



1. Of Connective Tissue: 



Fibroma, 



Lipoma, 



Chondroina, 



Myxoma, 



Osteoma, 



Angeioma. 



Malignant Sarcoma : 



Small and large round cell, 



Spindle-cell, 



Myeloid, 



Melanotic, 



Alveolar, 



Angeiosarcoma. 



2. Of Muscle-tissue : 



Leiomyoma, 

 Ehabdomyoma. 



3. Of Nervous Tissue: 



Neuroma. 



4. Of Epithelial Tissue : 



Papilloma, 



Adenoma. 



Malignant Carcinoma : 



Squamous-celled Epithelioma, 

 Cylindrical-celled Adenocarcinoma, 



Spheroidal-celled Carcinoma Simplex j J2 nce phal 



A fibroma is a tumor of fibrous connective tissue, according 

 to the density of which hard and soft varieties are distin- 

 guished. The former is composed almost entirely of dense 

 interlacing bundles of fibres and may be as hard as cartilage 

 (Fig. 118). Between the fibres are a few compressed or 

 spindle-shaped cells. In the soft variety round, spindle, and 

 branching cells are numerous, and the fibres few in number 

 with wider meshes. All gradations, however, are met with 

 between the two, and in its cellular richness it may approach a 

 fibrosarcoma. 



These tumors always grow from preexisting connective 

 tissue. Their most frequent seats are the skin and subcutane- 

 ous connective tissue, the sheaths of nerves and tendons, and 

 the periosteum of bones. They are also found growing from 

 the connective-tissue framework of the mammae, ovaries, 



