Recurrence after endoscopic piecemeal mucosal resection for large sessile colorectal polyps.
OBJECTIVE
To evaluate the safety and outcomes of endoscopic piecemeal mucosal resection (EPMR) for large sessile colorectal polyps.


METHODS
The patients enrolled in this study were 47 patients with 50 large sessile polyps (diameter, 2 cm or greater) who underwent EPMR using a submucosal saline injection technique between December 2002 and October 2005. All medical records, including characteristics of the patients and polyps, complications, and recurrences, were retrospectively reviewed. The first follow-up endoscopic examination was performed at 3-6 mo after initial endoscopic resection, and the second at 12 mo post-EPMR. Subsequent surveillance colonoscopic examinations were individualized, taking risk factors into account.


RESULTS
The patients were 23 men and 24 women, with a mean age of 60 years. Mean polyp size was 30.1 mm. Of 50 polyps identified, 34 (68%) were benign and 16 (32%) were malignant. There were 6 (12%) cases with EPMR-related bleeding: 5 intra-procedural and 1 early post-procedural bleeding. All bleeding episodes were managed by endoscopic clipping or argon beam coagulation. There were no perforations. Recurrence was identified in 5 cases (12.2%): 4 local recurrences detected at 3 mo post-EPMR and 1 local recurrence detected at 14 mo post-EPMR. The recurrence rate after EPMR was 3.1% for benign polyps and 33.3% for malignant polyps (P < 0.05). Median follow-up time was 37 mo.


CONCLUSIONS
EPMR is safe, but should be applied carefully in malignant polyps. Close follow-up endoscopic examinations are necessary for early detection of recurrence.
Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, 809 Madu-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, South Korea.
Guh Jung
GJ
Seo
Dae Kyung
DK
Sohn
Kyung Su
KS
Han
Chang Won
CW
Hong
Byung Chang
BC
Kim
Ji Won
JW
Park
Hyo Seong
HS
Choi
Hee Jin
HJ
Chang
Jae Hwan
JH
Oh
D000328:Adult; D000368:Aged; D003111:Colonic Polyps / Q000473:pathology* / Q000601:surgery*; D016099:Endoscopy, Gastrointestinal / Q000379:methods*; D005260:Female; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis* / Q000473:pathology; D012189:Retrospective Studies; D016896:Treatment Outcome