Atresia ani

Atresia ani. The animal’s impossibility to defecate has resulted in chronic retention of faecal matter with extreme dilation of both colon and caecum. The pressure exerted by the faecal matter retained in the rectum has lead to fistulisation to the vulva (image on the right) creating an opening through which faeces could be excreted, allowing the animal to survive.

design by R Noiva