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Table 1 cyst types

From: Giant colonic pseudo-diverticula importance of, and aids to radiological diagnosis: a case series

Type I Pseudodiverticulum
(pre-existing pulsion diverticulum)
Composed of granulation tissue and fibrous tissue, with chronic inflammatory cells and remnants of muscularis mucosa
Type II Inflammatory diverticulum Arises from local perforation and communicates with an abscess cavity. Wall is scar tissue only, no normal intestinal layers
Type III True diverticulum Contains all the layers of bowel wall