B East1,2, R Kaufmann3, A C de Beaux4. 1. 3rd Department of Surgery, 1st Faculty of Medicine, Charles University, Motol University Hospital, V uvalu 84, Prague 5, 15006, Czech Republic. barbora.east@gmail.com. 2. 2nd Faculty of Medicine, Charles University, Prague, Czech Republic. barbora.east@gmail.com. 3. Department of Radiology, Haga Teaching Hospital, The Hague, Netherlands. 4. Department of General Surgery, Royal Infirmary of Edinburgh, Edinburgh, UK.