How is non-Hodgkin lymphoma (NHL) graded?

Updated: Feb 25, 2021
  • Author: Sanjay Vinjamaram, MD, MPH; Chief Editor: Emmanuel C Besa, MD  more...
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Answer

The clinical manifestations of non-Hodgkin lymphoma (NHL) vary with such factors as the location of the lymphomatous process, the rate of tumor growth, and the function of the organ being compromised or displaced by the malignant process.

The Working Formulation classification groups the subtypes of NHL by clinical behavior—that is, low-grade, intermediate-grade, and high-grade. Because the Working Formulation is limited to classification based upon morphology, it cannot encompass the complex spectrum of NHL disease, excluding important subtypes such as mantle cell lymphoma or T cell/natural killer cell lymphomas. However, it continues to serve as a basis for understanding the clinical behavior of groups of NHLs.


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