1.   The colonoscopic biopsies at seven weeks, three, and seven months showed a progressive improvement in the proctocolitis although a degree of glandular distortion has persisted throughout.

2.   Though the numbers affected are small colonoscopic biopsy and histological examination for dysplasia seems to hold no advantage over routine clinical management.

3.   Nine further specimens, including two colonoscopic biopsy specimens, were obtained from patients with ulcerative colitis, all of whom were receiving steroid treatment.

4.   The other five were histologically normal colonoscopic biopsy specimens taken from children investigated for abdominal pain.