[Pathologic-anatomic aspects of the formation and complications of diverticula (author's transl)].

Diverticulosis is favored by general (erect posture), diatetic (low-roughage diet) and anatomic factors (discontinuity and particularly spiral arrangement of the musculature). A pouch of mucous membrane passes through the bowel wall in some cases, which makes comparison to the false diverticula of the so-called trabecular urinary bladder understandable. An important feature of the pathogenesis is the displaceable layer between mucosa and musculature. Diverticulosis is the basis of a disease, i.e. diverticulitis: this begins with stercoraceous pressure ulcers, and causes granulation tissue local peridiverticulitis. In peridiverticulitis, confluated inflammation sometimes involves all the sigmoid ensheathing it, with pernicious fomation of scars, i.e. perisigmoiditis. In this way, a disease of the intestinal wall becomes a disease of the intestine. The symptoms of perisigmoiditis are similar to those of carcinoma of the sigma.