Does withdrawal of long-term maintenance treatment with azathioprine tend to increase relapse risk in patients with Crohn 's disease?
AZA withdrawal resulted in a significantly increased relapse risk after 1 year and a nonstatistically significant trend for relapse after 2 years. Our results are in line with previous observations.
Using contemporary patients, there was a statistically significant overestimation of renal tumour sizes by CT compared with the pathological assessment. However, the overall difference between radiographic and pathological tumour size was 1 mm, suggesting that CT provides an accurate method with which to estimate renal tumour size.