In literature tectal neoplasms are mostly described with regard to dog
s and cats. In opposite to that there are still no indications as to t
umours of the rectum of the horse, This case report describes about th
e case of a tumour in the rectum of a 21-year-old horse (haemangioma c
avernosum or blooded-in lymphoma), The technical procedure of a rectal
ly placed Supramid-ligature is described.