Periodic Acid-Schiff ReactionAdenocarcinoma, MucinousCystadenoma, MucinousPseudomyxoma PeritoneiAppendiceal NeoplasmsCystadenocarcinoma, MucinousOvarian NeoplasmsCystadenomaCystadenocarcinomaCarcinoma, Pancreatic DuctalCystadenoma, PapillaryPancreatic NeoplasmsMucinsKeratin-7Cystadenoma, SerousCholangiopancreatography, Endoscopic RetrogradeTumor Markers, BiologicalPancreatic PseudocystPeritoneal NeoplasmsKeratin-20Mucin-2Cystadenocarcinoma, SerousCarcinoma, PapillaryNeoplasms, Unknown PrimaryPancreatic DuctsCarcinoma, EndometrioidTumor BurdenTumor Necrosis Factor-alphaImmunohistochemistryGallbladder NeoplasmsCell Line, TumorWilms TumorNeoplasms, ExperimentalGenes, Tumor SuppressorCarcinoid TumorTumor Suppressor Protein p53Retrospective StudiesNeuroendocrine TumorsTumor Suppressor ProteinsBrain NeoplasmsTumor MicroenvironmentColorectal NeoplasmsMammary Neoplasms, ExperimentalNeovascularization, Pathologic