[Endoscopic metallic stent followed by elective laparoscopic surgery for malignant colorectal obstruction].

Objective: To investigate the feasibility of endoscopic metallic stent as a bridge to elective laparoscopic surgery in patients with malignant colorectal obstruction.

Methods: Clinical data of 63 patients with obstructive colorectal cancer who underwent endoscopic metallic stent insertion under radiologic monitoring at the Longyan First Hospital between June 2012 and August 2016 were analyzed retrospectively. After complete remission of the obstruction, all the patients received multi-disciplinary team (MDT) evaluation to make the further treatment strategy. The subsequent surgery included open and laparoscopic procedures, and the short-term efficacy of these two procedures was compared.

Results: There were 30 male and 33 female patients with age of 30 to 90 (mean 67) years, including 3 cases of ascending colon cancer, 4 cases of transverse colon cancer, 12 cases of descending colon cancer, 26 cases of sigmoid cancer, and 19 cases of rectal cancer. Only one patient (1.6%) developed sigmoid perforation at 3 hours after stent placement, and underwent emergency laparotomy with Hartmann procedure. The remaining 62 patients had bowel movements. After MDT evaluation, 10 patients (16.1%) were treated with palliative chemotherapy because they were unfit for surgery or for diffuse distant metastases. A total of 52 patients underwent radical surgery after a mean interval from stent insertion of 10 days (7-20 days), including open (n=18, including two cases with conversion to open surgery) and laparoscopy (n=34). The baseline data between open and laparoscopy groups were similar (all P>0.05). Primary anastomosis was successfully performed in all the patients without preventive stoma. Compared to open group, laparoscopy group had faster bowel movement [(2.88±1.06) d vs. (4.05±2.43) d, P=0.022] and shorter postoperative hospital stay [(7.85±0.96) d vs. (9.82±4.41) d, P=0.002]. There were no statistically significant differences in operative time, intraoperative blood loss, number of harvested lymph node, and postoperative complication rate between two groups (all P>0.05).

Conclusions: Endoscopic metallic stent placement can effectively remove malignant colorectal obstruction, and thus enables surgeons to perform an elective radical surgery, avoiding emergency surgery with stoma and unnecessary surgery for patients with distant metastasis. In the era of enhanced recovery after surgery, the endoscopic metallic stent placement combined with laparoscopic procedures, as a less invasive alternative, is effective and safe.