482 



TUMORS. 



retieular variety ; it is often combined with the latter or with 

 fibroma and chondroma. It has no blood-vessels ; but these are 

 found in the adjacent fibrous or reticular structure, never very 

 abundantly. 



(c) Myxoma of the Structure of the Thyroid Body, so called 

 Lymph-adenoma. We may class these growths among the myx- 

 omata, on account of the presence of lymph-corpuscles, filling 

 closed spaces or alveoli, which are surrounded by well-developed 

 fibrous connective tissue, carrying, as a rule, numerous blood- 

 vessels. These tumors are imitations of the structure of the 

 thyroid body, and are benign 5 while tumors which are con- 



FIG. 183. MYXOMA OB LYMPH-ADENOMA, FBOM THE UPPER 

 JAW OF A WOMAN. 



C, frame of fibrous connective tissue, carrying blood-vessels, B ; L, lymph-corpuscles fill- 

 ing the alveoli, some of which are emptied by the cutting procedure. Magnified 500 

 diameters. 



structed on the plan of lymph-ganglia are decidedly malignant. 

 The latter I class among the myxo-myeloma. 



Tumors of the lymphomatous kind have been termed lymph- 

 adenoma ; but as the word " adenoma means a glandular, there- 

 fore epithelial, structure, of which there is no trace either in 

 lymph-ganglia or in the more fully developed alveolar structure 



