What is the WHO classification for grading NHL/B-cell follicular lymphoma (FL)?

Updated: Feb 23, 2021
  • Author: Mohammad Muhsin Chisti, MD, FACP; Chief Editor: Emmanuel C Besa, MD  more...
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In 2001, the WHO classification called for grading of follicular lymphoma (FL) from grades 1-3 based on the number of centroblasts per high-power field (hpf). However, the 2008 update consolidated cases with few centroblasts as FL grade 1-2 (low grade) and divided FL grade 3 into 3A (presence) and 3B (absence) of centrocytes. [3, 28]

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