TUMORS. 533 



when their contents are dry epidermal or fatty, sebaceous 

 masses. 



Cysts of the internal female genital organs are of frequent 

 occurrence, usually found in the ovaries, and presenting either 

 simple cysts inclosed by a comparatively thick capsule, or the 

 so-called parenchymatous cysts, which are combined with ade- 

 noma or cancer (cysto-adenoma, cysto-carcinoma). The latter 

 varieties are rare in comparison with simple cysts. They are 

 composed of one sac only, or of a number of partly closed, partly 

 confluent, cavities the so-called multilocular cysts. Their con- 

 tents are either a serous or a viscid colloid liquid, with a varying 

 amount of blood. By a gradual change in the coloring matter of 

 the blood the contents show varying shades of brown. An 

 admixture of pus renders the liquid cloudy, and by decomposi- 

 tion it becomes offensive and ichorous. Whenever pus-corpuscles 

 are present, as a general thing, we find large, coarsely granular 

 bodies, the so-called gorged corpuscles, which, perhaps, are 

 epithelia in fatty degeneration; while red blood-corpuscles, 

 swelled, and robbed of their coloring matter, appear as pale bod- 

 ies, containing only few granules ; these are the so-called Drys- 

 dale's corpuscles, which are not characteristic, by any means, of 

 the contents of an ovarian cyst. Cysts of the broad ligament 

 also can be traced back to their epithelial origin from the paro- 

 varies ; these single cysts almost always have very thin walls and 

 serous contents, without any combination with solid tumors. 



In ovarian cysts the origin of the closed sacs from previous 

 glandular formations, in most instances, can be easily traced. 

 Usually, cysts originate in organs containing epithelia, f . L, the 

 liver, the kidneys, though here the cysts are, in the majority of 

 the cases, produced by an inflammatory process. The medullary 

 corpuscles springing from the former epithelia are specially 

 endowed with the capacity of mucoid or colloid degeneration and 

 the formation of secondary cysts. 



12. CARCINOMA. CANCER, 



Carcinoma is composed of connective tissue and epithelium, 

 the latter being arranged without regularity in the form of 

 alveoli, cords, pegs, or nests ; they are without glandular struct- 

 ure, and they show no regular central caliber. Cancer as a 

 primary tumor exhibits the following varieties : 





