650 TUMOURS IN THE URETHRA AND BLADDER. 



In dogs and other small animals tumours may be removed from the 

 bladder by resorting to laparo-cystotomy (see under " Urinary 

 Calculi "). 



Schmidt removed a cystic polypus from a gelding by performing 

 urethrotomy, and breaking down intervening tissues as far as the neck 

 of the bladder ; he was then able to excise and extract the pedun- 

 culated tumour ; the operation wound healed in eighteen days. Heyne 

 describes a case of fistula between the small intestine and bladder, a rather 

 rare condition. ;The small intestine was adherent to the base of the bladder, 

 with which it communicated by an opening | to 1 inch in width. The 

 animal had suffered from weakness, defective appetite, diarrhoea, and great 

 emaciation. 



