vincent 's hospital , melbourne , suggests that there are two kinds of diverticular disease , one with the classic muscle abnormality , chiefly confined to the left colon and characterized by inflammatory and perforative complications and the other without muscle abnormality , but with diverticula throughout the colon , in which bleeding is common , perhaps due to a connective-tissue abnormality which , on the one hand , allows development of diverticula in the absence of abnormal intraluminal pressure and , on the other , provides inadequate support for vessels in the diverticular wall or for vascular malformations , which are therefore likely to bleed .
C0227388
left colon
C0009368
colon