Solid pseudopapillary tumor of the pancreas: A case series of 9 patients - ÖZKARA, Selvinaz; VARDAR AKER, Fügen; YİTİK, Ali; TOSUN, İlkay; SAĞLAM, Abdullah; AKKAN ÇETİNKAYA, Züleyha; GÜMRÜKÇÜ, Gülistan; TİSGAOĞLU, Nesime (Turkish Journal of Gastroenterology, 2012)