Safety and feasibility of repeat laparoscopic colorectal resection: a matched case-control study.

Background: Perioperative outcomes of repeat laparoscopic colorectal resection (LCRR) have not been extensively reported.

Methods: Patients who underwent LCRR from 2010 to 2018 in an expert center were retrieved from a prospectively collected database and compared to 2:1 matched sample. Matching was based on demographics, surgical indication [colorectal cancer (CRC) or benign condition], and type of resection (right-sided resection or left-sided resection or proctectomy).

Results: Twenty-three patients underwent repeat LCRR with a median time of 36 months between the primary and the repeat LCRR. They were 12 (52%) men with a mean age of 64.9 years (31-87) and a median BMI of 21.4 kg/m (17.7-34). Indication for repeat LCRR was CRC, dysplasia, anastomotic stricture, and inflammatory bowel disease in 11 (48%), 5 (22%), 4 (17%), and 3 (13%) patients, respectively. A right-sided resection, a left-sided resection, and proctectomy were reported in 11 (48%), 8 (35%), and 4 (17%) patients, respectively. Median blood loss reached 211 mL (range 0-2000 mL). Thirteen (57%) patients required conversion to laparotomy including 12 for intense adhesions. The median length of hospital stay was 7.5 days (5-20). Two (9%) major complications (Clavien-Dindo ≥ 3) were reported: 1 (4%) anastomotic fistula and 1 (4%) postoperative hemorrhage, without mortality. Among patients who underwent repeat LCRR for CRC, histopathological examination showed R0 resection in all patients, with at least 12 lymph nodes harvested in ten (91%) patients. After matched case-control analysis that compared to primary LCRR, conversion rate (p = 0.03), operative time (p = 0.03), and intraoperative blood loss (p = 0.0016) were significantly increased in repeat LCRR, without impact on postoperative outcomes.

Conclusions: Repeat LCRR seems to be feasible and safe in expert hands without compromising the oncologic outcomes. Intense postoperative adhesions and misidentification of blood supply might lead to conversion to laparotomy. Real benefits of laparoscopic approach for repeat LCRR should be assessed in further studies.