TH8.1 Radiological incidence of donor-site incisional hernia and parastomal hernia after Vertical Rectus Abdominus Myocutaneous Flap-based reconstruction following colorectal surgery

Abstract Aims The vertical rectus abdominis myocutaneous (VRAM) flap is commonly used to reconstruct perineal defects for low rectal and anal cancer. incidence of midline incisional hernias after VRAM reconstruction varies from 3.6% when detected clinically up 50% radiologically. aims this study accurately determine the radiological donor-site parastomal hernia following reconstruction. Methods Retrospective cohort patients undergoing colorectal surgery requiring over 10 years. Data were collected on patient demographics, indication surgical procedure including details any repair. Images surveillance CTs reviewed presence size and/or hernias. Parastomal classified based European Hernia Society (EHS) classification. Results 173 included in analysis. median age was 67 years (range 29 – 88 years) length follow 49 months (IQR 24.3 71.0 months). overall 27.6%. at 1, 2 5 16.8%, 25.2% 18.5%. 37.9%, 44.1% 29.8% (48.6% overall). Conclusions majority who develop herniation tend do so within first two Although use CT imaging improves diagnosis hernias, clinical significance unknown.