CANCER OF THE PROSTATE. 



I^afosse records as colloid cancer a case of diseased prostate in 

 an ox, in which the mass approximated to the size of the human 

 head, and was made up of numerous cavities the largest not 

 over ij% inch in diameter, and all intercommunicating, and con- 

 taining a gluey, or gelatinoid liquid with numerous small round 

 cells and a few multinucleated giant cells. No evidence is given 

 of the implication of even the adjoining lymph glands, so that 

 the case was probably only an enlarged cystic pro.state. 



Fournier records a case in a three year old horse, which on 

 necropsy showed a ruptured bladder, general peritonitis, and an 

 enlarged prostate, involving Cowper's glands. Nocard identified 

 its cancerous nature by microscopic examination. Yet there is 

 not a word of the implication of adjacent Ijnnph glands. 



Goubaux says prostatic cancer is common in dogs. 



PROSTATIC CYSTS. 



These are not at all uncommon as a complication of hyper- 

 trophy of the prostate, the ducts having become obstructed and 

 the follicles indefinitely distended. The case described by 

 lyafosse as cancer of the prostate of a bull is strongly sugge.stive 

 of such retention cvsts. 



CAECUEUS OF THE PROSTATE. 



Two forms of calculi have been found in the prostate in do- 

 mestic animals : ist, small, round, angular or branched bodies 

 made up in concentric layers and formed of organic nitrogenous 

 bodies : and 2nd, genuine calculi of calcium phosphate or am- 

 monia magnesian phosphate. These may cause pressure on the 

 parenchymatous tissue and atrophy, but in the lower animals 

 they are seldom the direct cause of prominent morbid symptoms. 

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