title: [Papillary epithelial tumors of the pancreas].
abstract: 4 cases of papillary epithelial tumors (PET) of the pancreas which were initially diagnosed erroneously are described in females aged 12, 14, 14 and 41 years. PET are circumscribed tumors up to 10 cm in diameter containing numerous cysts. Cyto- and histologically they are papillary-solid tumors with hyalinosis, myxomatosis, hemorrhage and necrosis. Zymogen type granules, ring-membranous inclusions were found electron microscopically. Some cells have a structure of oncocytes. Differential diagnostic features of PET are specified.
authors.forename: I N
authors.initials: IN
authors.lastname: Sokolova
authors.forename: A G
authors.initials: AG
authors.lastname: Perevoshchikov
authors.forename: O V
authors.initials: OV
authors.lastname: Chistiakova
authors.forename: L S
authors.initials: LS
authors.lastname: Ovchinnikov
mesh_terms: D000293:Adolescent; D000328:Adult; D002291:Carcinoma, Papillary / Q000473:pathology* / Q000648:ultrastructure; D002648:Child; D003581:Cytodiagnosis; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D004792:Enzyme Precursors / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008854:Microscopy, Electron; D008928:Mitochondria / Q000648:ultrastructure; D010190:Pancreatic Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D011379:Prognosis
chemical_list: D004792:Enzyme Precursors
vernacular_title: Papilliarnye épitelial'nye opukholi podzheludochnoĭ zhelezy.