Abstract 173
| HMCP appearance | n biopsies | Histology | |||
|---|---|---|---|---|---|
| Squamous | Columnar | Villous | Other | ||
| n = 132. Median age 46 years (range 22–78), 71(54%) female, median pouch duration 6.5 years (range 2–12). Total no. of ‘pouch years’ surveyed = 231. | |||||
| K coefficient of agreement between endoscopic zone 1 and squamous epithelium; zone 2 and columnar epithelium; and zone 3 with villous histology was 0.78, 0.69 and 0.85 respectively. Sensitivity 91%, specificity 87% and accuracy 93%. There were no cases of dysplasia at the ATZ. | |||||
| Zone 1 LCM | 526 | 433 | 88 | 5 | 0 |
| Zone 2 Kudo type I/II | 531 | 42 | 388 | 99 | 2 |
| Zone 3 Villous | 529 | 6 | 38 | 482 | 3 |