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. 2004 Oct;17(4):982–1011. doi: 10.1128/CMR.17.4.982-1011.2004

TABLE 1.

Intensity of inflammation classification scheme proposed by Dawson et al.

Intensity Grade
Follicles Papillae Key sign
Severe F3 (or F2 or F1)a P3 P3
Moderate F3 P2 F3
Mild F2 P0, P1, or P2 F2
Trivial (insignificant or absent) F0 or F1 P0, P1, or P2 F0 or F1
a

“The follicles may be obscured by severe papillary hypertrophy and diffuse infiltration (P3)” (reference 53, p. 14).