Interobserver concordance in visual assessment of Ki67 immunohistochemistry in surgical excision specimens from patients with lymph node-negative breast cancer.
Susanna ThomasMasrura KabirBelinda E ButcherShaun ChouHema MahajanGelareh FarshidRosemary BalleineNirmala PathmanathanPublished in: Breast cancer research and treatment (2021)
Interobserver and prognostic concordance in Ki67 immunohistochemistry assessments was high using either hot spot cell counting or visual estimation, further supporting the utility and reproducibility of these cost-efficient methods to assess proliferation.