[New aspects of the pathogenesis and treatment of haemorrhoids (author's transl)].

Blood flow out of the corpus cavernosum recti (which has an arterial blood supply) was studied by injection of veins in the anorectal region. Venous flow occurred across the sphinctre and proved of considerable significance in the pathogenesis of haemorrhoids. An understanding of the pathomorphological changes in the three stages of haemorrhoid development made appropriate therapeutic consequences possible.