522 A Snapshot Audit of Incisional Hernia Rates Following Colorectal Cancer Resection

Abstract

Abstract Aim Incisional hernia is a common complication of colorectal surgery. Recent European Hernia Society guidelines recommend strategies such as small bites closure and off-midline incisions to reduce incisional hernia rates. We aimed to evaluate our centres incisional hernia rate and performance against these categories Method All patients undergoing surgery for colorectal cancer in 2020 were included. Operative details including incision location and closure method were collected. Post-operative CT scans were assessed and correlated with clinic letters to determine presence of incisional hernia. Patients were excluded if they underwent re-operation through the midline within 12 months, or if had no imaging after 12 months. Results 118 patients were included. The incisional hernia rate was 31.4% at a mean follow-up of 24.9 months. Large bites closure (Hughes or loop PDS, n=80) had a higher incisional hernia rate compared to small bite closure ( n=38) (35.0% vs 23.6%). Incisional hernia rates were 44.1% in laparotomy incisions, 37.2% in midline extraction sites, 8% in Pfannensteil extraction sites and 0% in transverse extraction sites. Overall, IH rates in midline incisions were 40.7%, compared to 6.3% in off-midline incisions. Conclusions Incisional Hernia rates remain high following colorectal cancer surgery in our institution. Small bites closure and off-midline incisions appear to reduce this risk, but use of these techniques remains low. Work is ongoing to identify and implement strategies to improve uptake of small bites and off-midline incisions.