Diseases of swine, with particluar reference to hog-cholera . nd to be considerably shrunken in size, quite firmto the touch, and, if cut into, there will be seen a large amount oftough fibrous connective tissue replacing the normal tissue of thekidney. RENAL DROPSY (HYDRONEPHROSIS, CYSTIC KIDNEY) Cystic disease of the kidney is a condition which is very com-monly met with in hogs during meat inspection. Lucks reportsfinding the condition in 43 ( per cent.) out of 6425 hogs exam-ined. In female pigs it was found almost three times as frequentlyas in males. In 29 cases the condition was onl
Diseases of swine, with particluar reference to hog-cholera . nd to be considerably shrunken in size, quite firmto the touch, and, if cut into, there will be seen a large amount oftough fibrous connective tissue replacing the normal tissue of thekidney. RENAL DROPSY (HYDRONEPHROSIS, CYSTIC KIDNEY) Cystic disease of the kidney is a condition which is very com-monly met with in hogs during meat inspection. Lucks reportsfinding the condition in 43 ( per cent.) out of 6425 hogs exam-ined. In female pigs it was found almost three times as frequentlyas in males. In 29 cases the condition was only on one side (tentimes on the left side, nineteen times on the right side). In 14cases both kidneys were affected. 604 DISEASES OF SWINE Cause.—The active cause of cystic kidney is some obstructionto the flow of urine. The block may be on one side or on kidney continues to secrete urine, and the fluid, if unable topass down as it should to the bladder, will dam back into the kid-ney, dilate the urinary passages, and destroy the normal tissues of. Fig. 87.—Congenita] cysts of the kidney: a, Renal artery; h, renal vein;c, ureter; d, pelvis of the kidney; e, cysts filled with clear fluid (McFar-land). the kidney. The organ then becomes simply a dilated sac contain-ing the dammed-back urine. Careful investigations in hogs have proved that the mostfrequent cause of the condition is the fact that the ureters or tubesleading from the kidney to the bladder are placed very low downat their point of entrance into the bladder. As a result, when the RETENTION OF URINE 605 bladder becomes partially filled with urine it presses down upon theopenings of these tubes and chokes them off. In this way the flowof urine from the kidney to the bladder is checked and the dammed-back urine dilates and atrophies the kidney. Symptoms.—The symptoms of this condition in the living ani-mal are usually unnoticeable. One kidney may be very extensivelyaffected without producing any symptoms wh
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