We present reconstruction of a wide anterior abdominal defect measuring 30X45 cm(2), the result of necrotising pancreatitis. After serial debridements and reconstruction of the peritoneum using a Prolene mesh support, a delayed extended groin flap was transposed. No complications were encountered afterwards. An extended groin flap can be used safety to cover a full-thickness defect of the abdominal watt encompassing all of the anatomic subunits. (c) 2005 The British Association of Plastic Surgeons. Published by Elsevier Ltd. All rights reserved.