Primary risk factor    N     Severe Villous    Definite for Dysplasia    Aneuploidy

for Inclusion                     Atrophy in part                                                         

                                        or all of the pouch

Pouchitis                 34                17                            0                            1

Pelvic Pouch            34                 6                             1                         1

> 12 yrs

Neoplasia in             9                  3                             0                            0

Proctocolectomy

Kock Pouch              29                7                             0                            1

> 15 yrs.

Total                       106              33                          1                             3