Table 7.

Assignment of lesion categories for mesenteric and ileocecal LNN, oGALT and small intestine and in summary

Lesion category	mesenteric and ileocecal LNN	oGALT	small intestine	summary
I	no lesions (macroscopic, histological), no MAP	no lesions (macroscopic, histological), no MAP	no lesions (macroscopic, histological), no MAP	all 3 sites (LNN, oGALT and small intestine) are category I
II	predominantly small circumscribed lesions, lesions in 1–2 out of the 3 LNN examined, paucibacillary	lesions in up to 3 sites of oGALT, f/mf, paucibacillary	lesions in up to 2 sites of small intestine, f/mf, paucibacillary	at least 2 of the 3 sites (LNN, oGALT, small intestine) are category II or 1 site is category II, 2 are category I or 1 site each is category I, category II and category III
III	predominantly extensive lesions, lesions in all 3 LN, pauci-/multibacillary	lesions in >3 sites of oGALT, mf, pauci-/ multibacillary	lesions in >2 sites of intestine, mf, pauci-/ multibacillary	at least 2 of the 3 sites (LNN, oGALT, small intestine) are category III or 1 site is category III and the others are category I

LNN lymph nodes, oGALT gut-associated lymphoid tissue, f focal, mf multifocal.