Colitis Ulcerosa Colitis ulcerosa Marchal-Bressenot et al reported a histologic index for ulcerative colitis (UC). Colitis Ulcerosa Colitis ulcerosa In this system, The vascular pattern is rated as 1-3. The simple clinical colitis activity index was created in 1998 and is used to assess the severity of symptoms. The best test for diagnosis of ulcerative colitis remains endoscopy, which is examination of the internal surface of the bowel using a flexible camera. AMBOSS: medical knowledge platform for doctors and students Nancy colitis - Nephrotic syndrome and FSGS