CystadenocarcinomaCystadenocarcinoma, MucinousCystadenomaCystadenocarcinoma, PapillaryCystadenocarcinoma, SerousCystadenoma, MucinousAppendiceal NeoplasmsMucoceleCystsPyonephrosisOvarian NeoplasmsMixed Tumor, MesodermalBiliary Tract NeoplasmsCystadenoma, PapillaryParotid NeoplasmsBarium SulfatePseudomyxoma PeritoneiBile Ducts, IntrahepaticTumor Markers, BiologicalBile Duct NeoplasmsPancreatic NeoplasmsRetroperitoneal NeoplasmsTomography, X-Ray ComputedSalivary Gland NeoplasmsPancreatectomyLiver NeoplasmsHydroxy AcidsPancreaticoduodenectomyTumor BurdenTumor Necrosis Factor-alphaImmunoenzyme Techniques