770 
REPORTS OF CASES. 
This is not the first case of the kind that I have met with, 
having seen similar cases in sows, mares and cows. Thinking 
this might be of interest to some, like myself, who have never 
found anything of the kind in print, I forward it to you. I 
prize the Review very much, and feel that it has repaid me its 
cost many times over in the one article of Prof. W. L- Williams 
(his translation of J. Schmidt’s treatment of parturient paresis.) 
EARGE ABDOMINAE CYST IN A MARE. 
By F. O. Richmond, M. D. C., Phoenix, Arizona. 
Some time ago my attention was called to a fine driving 
mare belonging to our Mayor. She had been turned out' to 
grass some months previous with the expectation that she would 
drop a colt, but as no colt appeared and the time had elapsed for 
her to drop a foal from any exposure to a stallion she was brought 
in for examination. On examination I found her abdomen 
much’ distended but not more than would be expected in a mare 
heavy in foal and just off of grass. She was in good health and 
spirits and showed no signs of any derangement. I withheld my 
diagnosis until the following day, when upon a more thorough 
examination I located what I concluded was a large abdominal 
tumor, and I so reported to the owner. His decision was that I 
should take charge of her and dispose of her as I wished. I ac¬ 
cordingly destroyed her. 
On opening the abdomen about a gallon of sero-pnrnlent 
fluid escaped, and lying hard on the floor of the abdomen, but 
not adherent to it, was an immense growth which I found to be 
a mnltifollicular pedunculated cyst, weighing about 150 pounds, 
containing pus, blood clots and sero-purulent fluid to the amount 
of several gallons. The cyst after being emptied weighed about 
30 lbs. The only place it was adherent was by a neck, four 
inches in diameter, attached to or a part of the serous membrane 
a few inches anterior to the ovaries. The walls were from one 
to two inches thick, presenting a smooth serous coat on the out¬ 
side ; and on the inside a more or less dark colored membrane. 
There was no indication of inflammation with the exception of 
a very slight peritonitis. I have my opinion of the origin of 
tlie cyst, but I would very much like the opinion of some one 
better qualified than I. My opinion is that the cause was a 
partial rupture of a blood vessel, which caused a gradual destruc¬ 
tion of the serous coat and adhesions in the immediate vicinity 
of the rupture ; also a growth of tissue which strengthened the 
walls of the neck, making it more inelastic than the lower por- 
