INTRODUCTION: Unexpected @entity5 in removed @entity1127 is reported in up to 9% of cases. The introduction of screening for @entity14 will inevitably increase the number of removed @entity1127 and therefore also the incidence of malignant @entity1127 . The treatment strategy is either watchful waiting or subsequent colorectal resection. The aim of this study was to perform a preliminary evaluation of the oncological results of polyp-ectomy for malignant @entity1127 with or without subsequent resection, including the @entity1 ' long-term survival. METHODS: This was a retrospective analysis of prospectively collected data on 50 @entity1 with unexpected @entity5 after a polypectomy treated between January 2003 and January 2008. A total of 27 @entity1 (54%) were treated with watchful waiting, and 23 (46%) underwent subsequent surgery. The Mann-Whitney U-test and chi-square test were used to compare the results between the two groups. RESULTS: There were more @entity1 in the surgery group with positive resection margins after the polypectomy (p = 0.002). No difference was found regarding @entity5 differentiation grade, @entity3 , local recurrence or distant @entity3 . @entity3816 occurred in three @entity1 (13%, 95% confidence interval: 0-28%). In all, 16 of the 23 operated @entity1 had no @entity5 . Overall long-term survival was higher among the operated @entity1 (p = 0.005), but there was no difference in @entity5 -free survival (p = 0.071). CONCLUSION: Overtreatment of @entity1 with malignant @entity1127 seems to occur. Which @entity1 benefit from further surgery has yet to be determined. FUNDING: not relevant. TRIAL REGISTRATION: not relevant.

Watchful waiting versus colorectal resection after polypectomy for malignant XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity1127 :: ('MESH:D011127', 'Disease') :: ['colorectal polyps', 'polyps'] @entity5 :: ('MESH:D009369', 'Disease') :: ['residual tumour', 'cancer', 'malignancy', 'tumour'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis', 'lymphovascular invasion'] @entity14 :: ('MESH:D015179', 'Disease') :: ['colorectal cancer'] @entity3816 :: ('MESH:D007431', 'Disease') :: ['Intraoperative complications']
@entity1127 :: (MESH:D011127,Disease) :: ['colorectal polyps']
