1. Radiology Institute, University of Pavia, IRCCS Policlinico S. Matteo, Pavia, Italy
2. Department of General Gastrointestinal and Breast Surgery, University of Pavia, IRCCS Policlinico S. Matteo, Pavia, Italy
3. Department of Internal Medicine and Medical Oncology, University of Pavia, IRCCS Policlinico S. Matteo, Pavia, Italy