title: Argyrophilic nucleolar organiser regions in transitional cell bladder tumours related to established prognostic factors, progression and independent prognostic value.
abstract: Paraffin-embedded archival biopsy specimens from 229 primary transitional cell carcinomas (TCCs) were stained with silver nitrate to demonstrate the nucleolar organiser regions (Ag-NORs). T3-T4 high grade tumours had higher Ag-NOR counts/nucleus than low grade superficial papillary tumours (p less than 0.001). Non-papillary tumours showed more Ag-NORs than papillary ones (p less than 0.001). Aneuploid tumours with high S phase fraction had more Ag-NORs than diploid tumours (p less than 0.001) and mitotic frequency was also related significantly to Ag-NOR count (p less than 0.001). SD of nuclear area and nuclear area as measured by planar morphometry correlated significantly to Ag-NOR count (p less than 0.001). Close to 60% of the total number of Ag-NORs/nucleus can be related to other quantitative variables. Ag-NORs predicted independently survival in Ta-T1 tumours (p = 0.016) whereas in the whole series Ag-NORs had no independent prognostic value.
authors.affiliation: Department of Pathology, University of Kuopio, Finland.
authors.forename: P K
authors.initials: PK
authors.lastname: Lipponen
authors.forename: M J
authors.initials: MJ
authors.lastname: Eskelinen
mesh_terms: D000782:Aneuploidy; D002295:Carcinoma, Transitional Cell / Q000175:diagnosis / Q000473:pathology / Q000648:ultrastructure*; D004273:DNA, Neoplasm / Q000032:analysis; D006801:Humans; D008940:Mitotic Index; D015999:Multivariate Analysis; D009697:Nucleolus Organizer Region / Q000648:ultrastructure*; D011003:Ploidies; D011379:Prognosis; D016196:S Phase; D016622:Silver Staining; D016019:Survival Analysis
chemical_list: D004273:DNA, Neoplasm