Recurrence rates after EMR of large sessile serrated polyps.

BACKGROUND

Little is known regarding the recurrence rate after EMR of large (≥20 mm) sessile serrated adenoma/polyps (SSA/Ps).

OBJECTIVE

To compare the recurrence rate among SSA/Ps and conventional adenomas in patients referred to a specialty practice for EMR.

DESIGN

Retrospective cohort study.

SETTING

Academic hospital and a satellite surgery center.

PATIENTS: A total of 362 consecutive patients referred for resection of large (≥20 mm) polyps in the colorectum.

INTERVENTIONS: All EMRs were performed with a submucosal contrast agent. All subjects had a follow-up surveillance examination (inspection and biopsy of the EMR) at our center.

MAIN OUTCOME MEASUREMENTS: Rates of residual polyp at follow-up examination.

RESULTS

Residual polyp was identified among 8.7% of SSA/Ps compared with 11.1% for conventional adenomas (P = .8).

LIMITATIONS: Retrospective design, procedures performed by a single experienced endoscopist, low number of serrated lesions.

CONCLUSIONS

The rate of recurrence after EMR of SSA/Ps is similar to the rate after EMR of conventional adenomas.