344 Veteriyiary Medicine. 



Forced dilatation, or eyen careful incision at several different 

 points of the circumference of the stricture may give good results 

 in certain cases. 



INTESTINAL INVAGINATION. INTUSSUSCEPTION IN 



SOIvIPEDS. 



Definition. Seat: ileum into caecum, rectum through sphincter, duode- 

 num into stomach, floating small intestine into itself, caecum into colon. 

 Lesions : blocking, or tearing of mesentery, dark congestion, peritoneal ad- 

 hesions, incarcerate gut, necroses, sloughing of invagination. Symptoms : 

 colics of obstruction, enteritis, and septic infection, eructation, emesis, ten- 

 esmus, signs of sepsis and collapse, death in seven hours or more, or recovery 

 by disinvagination or sloughing. Diagnosis : by rectal exploration or pass- 

 ing of slough. Treatment : oily laxatives, demulcents, enemata, mechanical 

 restoration of everted rectum, laparotomy. 



DefinitioJi. The sliding of one portion of an intestine into a 

 more dilated one, as if a few inches of the leg of a stocking were 

 drawn within an adjoining portion which is continuous with it. 



Seat. It is most commonly seen in the inversion of the small 

 intestine into itself or into the caecum, or next to this the passage 

 of the rectum through the .sphincter ani, to constitute eversion of 

 the rectum. It would appear to be possible at any part of the. 

 intestinal canal in the horse, in which the bowels are more free 

 to move than they are in ruminants. Peuch records a case of in- 

 vagination of the duodenum into the stomach and Cadeac gives a 

 woodcut of such a case, which one would suppose the fixed posi- 

 tion of the duodentnn would render impossible. It is conceivable 

 that the jejunum could be invaginated into the duodenum, and 

 that this should have continued until it extended into the stomach, 

 but it is difficult to see how the duodenum itself could have passed 

 into the stomach without tearing itself loose from its connections 

 with the pancreas, liver and trans\'erse colon. 



Schroeder, Serres and L,afos.se describe cases in which the small 

 intestine was everted into the caecum and thence through the 

 colon and rectum until it protruded from the anus. 



The invagination of the floating small intestine into itself is 

 common at any point, and extensive and even repeated. Marcout 



