TUMOMS. 521 



The most important clinical sign of neuroma is its painf ulness, 

 which bears no relation to its size. Small tumors the size of a 

 lentil are sometimes extremely painful, while large ones, the size 

 of a man's fist, cause little or no pain. This difference in the 

 amount of pain depends, doubtless, upon the fact that the nerve- 

 fibers in some tumors are quickly destroyed or transformed into 

 the tissue of the tumor. 



10. PAPILLOMA. WARTY TUMOR. 



Warty tumors are combinations of connective and epithelial 

 tissue j the former produces the finger-like, papillary elevations, 

 the latter furnishes the outer investment. The connective tissue 



FIG. 215. NEURO-FIBROMA OF THE SKIN ABOVE THE 

 PATELLA OF A WOMAN. 



N, remnants of medullated nerve-fibers, with fluted outlines ; M, myeline drops, sepa- 

 rated from one another ; V, capillary blood-vessel. Magnified 600 diameters. 



is in its structure either fibrous or myxomatous, or a combination 

 of both, and, as a rule, supplied with numerous blood-vessels, 

 some of which are very large. Sometimes papillomatous growths 

 exhibit the structure of myeloma, either from the beginning or 

 after, by repeated trials of extirpation, considerable irritation has 



