﻿IX, B. 3 Boynton: Kidney-worm Infestation of Swine 275 



A section through the apparent scar on the flattened inner 

 surface of this kidney revealed an area 2.8 by 1.9 centimeters, 

 composed of fibrous connective tissue, and containing 9 worm 

 tracts varying from 3 to 5 millimeters in diameter. Five worms 

 were found in these tracts. This area was located principally in 

 the medulla, a part of it extending up into the cortex. In all, 8 

 worms were found in this kidney and 2 in its ureter. 



LYMPH GLANDS 



In every case examined, the portal and mesenteric lymph 

 glands were enlarged, one of average size measuring 5.5 by 

 2.3 centimeters. As a rule, in the early stages they were soft 

 in consistence, but became indurated in the older lesions. The 

 external surface of the glands which had been infested for some 

 time and had become indurated was very uneven. Small pro- 

 tuberances extended up from the surface of the glands, where 

 the worms had embedded themselves in the capsule. 



On sectioning, the indurated glands were cut with some dif- 

 ficulty. The cut surface presented different appearances, de- 

 pending upon the extent to which changes had taken place. 



In the early stages, the glandular structure had a congested 

 reddish appearance throughout. However, this was most prom- 

 inent along the borders of the capsule and the trabeculse. In 

 the next stage, the capsule and trabeculse were considerably 

 thickened. The internal glandular structure was colored gray, 

 except along the border of the thickened capsule and trabeculse, 

 where it was dark red from the congestion and blood pigment 

 present. 



Tracts either containing worms or filled with purulent mate- 

 rial were found especially in the thickened capsule and sometimes 

 extending into the larger trabeculae. 



A few glands were found in which practically the entire paren- 

 chymatous structure had become transformed into connective 

 tissue intermingled with worm tracts which contained either 

 worms or a mass of round cells and tissue detritus. 



ABDOMINAL CAVITY 



Ascites was present in 3 of the cases examined ; namely, A-21, 

 A-27, and A-18. In A-21 there were between 3 and 4 liters of 

 blood-stained fluid. The small and large intestines were one 

 mass of adhesions. The intestinal walls were oedematous, and 

 the mucous membrane was highly congested throughout. 



In the other 2 cases there was not as much ascitic fluid 



