We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleDysplasia and carcinoma in longstanding ulcerative colitis: an endoscopic and histological surveillance programme.AuthorsLeidenius, M; Kellokumpu, I; Husa, A; Riihela, M; Sipponen, PPublicationGut, 1991, Vol 32, Issue 12, p1521ISSN0017-5749Publication typearticleDOI10.1136/gut.32.12.1521