238 



THE MICROSCOPIST. 



FIG. 191. 



tated by acetic acid. It resembles jelly or half-set glue. 

 It first appears as a small globule in the 

 cell, which grows, pushing aside the nu- 

 cleus, until it not only fills the cell but 

 swells largely, communicating with neigh- 

 boring cells so as to form cystlike cavi- 

 ties containing the gelatinous substance. 

 Here it rnay afterwards undergo lique- 

 faction (Fig. 191). 



The colloid change is most common in 

 enlargements of the thyroid gland, in the 

 lymphatic glands, and in many of the 

 new formations. Colloid or nmcoid tu- 

 mors, or tumors which have undergone 

 these forms of transformation, are some- 



Colloid degenerat- 

 ingcells from a colloid 

 cancer After RLND- 



FLEISCH. 



FIG. 192. 



Colloid degeneration in the strotna of an ovarian cystoid. a, a. Larger cysts, whose 

 walls bear an incomplete epithelium of low cylindrical cells whose contents after hard- 

 ening is split up radiating, b. Younger cysts without epithelium permeated by remains 

 of connective tissue fibres, c. The game with a wreath of loose epithelia d. Colloid 

 infiltration of the connective tissue which has not yet attained any cystoid appearance 

 and inclosure. e. Small-celled infiltration of the stroma. 1-200. After RINDFLEISCH. 



