Treatment strategies for nodal and gastrointestinal follicular lymphoma: Current status and future development

Table 1 Lugano staging classification of gastrointestinal tract lymphoma[29]

Stage
I	Tumor confined to GI tract
	Stage primary site or multiple, noncontiguous lesions
II	Tumor extending into abdomen from primary GI site
	Nodal involvement
II1	Local (paragastric in cases of gastric lymphoma and paraintestinal for intestinal lymphoma)
II2	Distant (mesenteric in the case of an intestinal primary; otherwise paraaortic, paracaval, pelvic, inguinal)
IIE	Penetration of serosa to involve adjacent organs or tissues [enumerate actual site of involvement, e.g. IIE (pancreas), IIE (large intestine), IIE (post intestinal wall)]
	Where there is both nodal involvement and penetration involving adjacent organs, the stage is denoted using both a subscript (1 or 2) and E, e.g. II1E (pancreas)
IV	Disseminated extra-nodal involvement, or a GI tract lesion with supradiaphragmatic nodal involvement

GI: Gastrointestinal.