How do you define by IHC a neoplasia as CD20 positive?

Domenico Teofilo Lazzaro @Domenico-Lazzaro-2

09 May 2019 1 8K Report

What is the criteria to define a lymphoma CD20 positive? What is the cut off of expression?

I think it depends of several points: what type of lymphoma do you are suspecting, if the patient received treatment (Rituximab) or not, histologic features (e.g: necrosis). Sometimes flow cytometry is a more accurate to determine a real cut off. However, the paper below can help you.

Article Predictive significance of the cut-off value of CD20 express...

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