[1]Division of Surgery and Interventional Science,University College London,Bloomsbury Campus,London WC1E 6AU,United Kingdom;
[2]Department of General Surgery,Gloucestershire Royal Hospital,Gloucester GL1 3NN,United Kingdom;
[2]Department of General Surgery,Gloucestershire Royal Hospital,Gloucester GL1 3NN,United Kingdom;
Gastrointestinal stroma tumours; Ultrasonic scalpel; Harmonic; Giant tumour; Stomach;