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Sökning: L773:0309 0167 OR L773:1365 2559

  • Resultat 11-20 av 122
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11.
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12.
  • Ahlin, Cecilia, et al. (författare)
  • Ki67 and cyclin A as prognostic factors in early breast cancer : What are the optimal cut-off values?
  • 2007
  • Ingår i: Histopathology. - : Wiley. - 0309-0167 .- 1365-2559. ; 51:4, s. 491-498
  • Tidskriftsartikel (refereegranskat)abstract
    • AIMS: To find the optimal cut-off values for cyclin A and Ki67 in early breast cancer tumours and to evaluate their prognostic values. METHODS AND RESULTS: Tissue microarray (TMA) slides were constructed from 570 T1-4 N0-1 M0 breast cancer tumours. The TMA slides were stained for cyclin A and Ki67 using immunohistochemistry with commercial antibodies. To investigate the optimal cut-off values for cyclin A, Ki67 average and maximum values the material was split into two parts at cut-offs defined by dividing it into deciles. For each cut-off value the relative risk (RR) for metastasis-free survival (MFS) and overall survival (OS) was calculated comparing patients with high versus low cyclin A or Ki67 expression. When using a cut-off value around the seventh decile, cyclin A and Ki67 score correlated with the highest RR ratio for MFS in the chemotherapy-naïve subgroup. Among patients having received adjuvant chemotherapy, no statistically significant differences in MFS or OS were found. CONCLUSIONS: The optimal cut-off value for cyclin A average is 8% and for cyclin A maximum value 11%; for Ki67 the corresponding values are 15% and 22%. Additional studies are needed to verify these results.
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17.
  • Glimelius, Ingrid, et al. (författare)
  • Tissue microarray and digital image analysis : a methodological study with special reference to the microenvironment in Hodgkin lymphoma
  • 2012
  • Ingår i: Histopathology. - : Wiley. - 0309-0167 .- 1365-2559. ; 61:1, s. 26-32
  • Tidskriftsartikel (refereegranskat)abstract
    • Aim:  Cancer research has moved from solely investigating the tumour cells to also including analysis of the tumour microenvironment; however, the methods utilized have not been evaluated for this change. The aim of this study was to compare tissue microarrays (TMA) to whole tissue sections (WS) with regard to cells in the tumour microenvironment. Manual evaluation and digital image analyses (DIA) were utilized and also compared.Methods and results:  TMA slides from 117 Hodgkin lymphoma patients were immunostained for forkhead box protein 3 (FoxP3) [identifying regulatory T cells (T(reg) )], and 39 corresponding WS were also analysed. Manual evaluation and DIA were utilized for all patients on both the TMA and the WS. A correlation coefficient of 0.83 was obtained for the proportion of T(reg) in TMA versus WS using manual evaluation and a correlation coefficient of 0.77 with DIA. T(reg) counts using manual evaluation correlated in turn with DIA, with a coefficient of 0.79 for the 117 TMA sections and 0.65 for the 39 WS.Conclusion:  Because a high correlation was observed between TMA and WS, TMA can be utilized when evaluating cells in the tumour microenvironment. DIA appears to provide a reliable measurement method, provided that manual control of the tumour slides is conducted.
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18.
  • Hellquist, H. B., et al. (författare)
  • Basaloid squamous cell carcinoma of the palate
  • 1994
  • Ingår i: Histopathology. - Oxon, United Kingdom : Blackwell Publishing. - 0309-0167 .- 1365-2559. ; 25:2, s. 178-180
  • Tidskriftsartikel (refereegranskat)
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