Leiomyosarcoma of Pancreas: A Rare Malignancy - Nasrollahi, Hamid; Omidvari, Shapour; Mokhtari, Maral; Hamedi, Seyed Hassan; Ansari, Mansour; Mohammadian Panah, Mohammad; Ahmadloo, Niloofar; Mosalaei, Ahmad (Reports of Radiotherapy and Oncology, 2016)