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- W2123228176 abstract "Abstract Background There are conflicting data on markers of disease progression and outcome of Merkel cell carcinoma. Objective We suggest to review histological and various immunohistochemical features of Merkel cell carcinoma specimens, in order to identify prognostic markers of clinical relevance. Methods We collected paraffin‐embedded blocks from primary tumours from 26 patients diagnosed with Merkel cell carcinoma and determined the following: type and size of the tumour, number of mitoses, proliferation rate (Ki‐67 antibody), (anti)‐apoptosis rate (bcl‐2, p53, p63 antibodies) and lymphatic vessel invasion (D2‐40 antibody for podoplanin). Two authors blinded to clinical outcome, independently assessed and scored all samples. The findings were correlated with tumour progression, which was determined by local recurrence, lymph node‐ or distant metastases. Results During the average follow‐up period of 63.4 months 12 (46%) patients had disease progression. Statistical analysis revealed Ki‐67‐staining ( P = 0.005) as a marker of disease progression, high number of mitoses ( P = 0.026) correlated with lymph node metastasis, while a tendency for increased Bcl‐2 expression ( P = 0.064) was found in patients with local recurrence. A higher number of invaded lymphatic capillaries showed a tendency in correlation with metastases ( P = 0.072). Conclusion The findings indicate that high numbers of mitoses, proliferation and survival of tumour cells as marked by Ki‐67‐ and Bcl‐2‐staining, and infiltration of lymphatic vessels, might correlate with the biological behaviour of Merkel cell carcinoma." @default.
- W2123228176 created "2016-06-24" @default.
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- W2123228176 date "2014-08-04" @default.
- W2123228176 modified "2023-09-27" @default.
- W2123228176 title "Merkel cell carcinoma: mitoses, expression of Ki-67 and bcl-2 correlate with disease progression" @default.
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- W2123228176 doi "https://doi.org/10.1111/jdv.12626" @default.
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