title: Pseudoepithelial pattern in smears prepared from fine needle aspirates of plasmacytomas.
abstract: A pseudoepithelial pattern was observed in smears prepared from fine needle aspirates (FNA) from three plasmacytomas. In one case cells displayed a markedly granular, 'oncocytic' cytoplasm. Granularity of the cytoplasm was due to a large number of mitochondria as shown by electron microscopy. B-lymphocytic origin of the neoplasms was confirmed by immunocytochemistry.
authors.affiliation: Division of Cytology, University of Zürich, Switzerland.
authors.forename: O R
authors.initials: OR
authors.lastname: Dirsch
authors.forename: U
authors.initials: U
authors.lastname: Landolt
authors.forename: D
authors.initials: D
authors.lastname: Gut
authors.forename: G
authors.initials: G
authors.lastname: Pedio
mesh_terms: D000368:Aged; D001402:B-Lymphocytes / Q000473:pathology; D014408:Biomarkers, Tumor / Q000032:analysis; D001707:Biopsy, Needle; D001859:Bone Neoplasms / Q000473:pathology*; D001943:Breast Neoplasms; D005260:Female; D006801:Humans; D007085:Ilium / Q000473:pathology*; D008159:Lumbar Vertebrae / Q000473:pathology*; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D008928:Mitochondria / Q000473:pathology; D009378:Neoplasms, Multiple Primary; D010014:Osteolysis / Q000209:etiology; D010954:Plasmacytoma / Q000473:pathology*; D012272:Ribs / Q000473:pathology*; D013125:Spinal Neoplasms / Q000473:pathology*
chemical_list: D014408:Biomarkers, Tumor