There are four types of SCAD, based on endoscopic appearance. Pattern A is characterized by involvement of crescentic folds and is the most common type of SCAD (52%). Pattern B has an appearance similar to mild-to moderate ulcerative colitis (30.40%), whereas pattern C appears similar to Crohn's disease (10.90%). Pattern D is the least common, and appears similar to severe ulcerative colitis (6.50%).
Segmental colitis associated with diverticulosis
Collagenous colitis
Chemical colitis
Diversion colitis
Microscopic colitis
Lymphocytic colitis
Fibrosing colonopathy
Cytomegalovirus colitis