. Author manuscript; available in PMC: 2018 Nov 18.

Published in final edited form as: Nat Rev Gastroenterol Hepatol. 2017 Sep 27;14(12):711–726. doi: 10.1038/nrgastro.2017.126

Table 1 |.

Grading endoscopic severity in gastrointestinal acute GVHD

Grade	Freiburg Classification for endoscopic findings⁶⁴
1	Normal mucosa or the absence of higher-grade findings
2	Spotted erythema or initial aphthous lesion
3	Aphthous lesions or focal erosions
4	Confluent defects, ulcerations and/or complete denudation of the mucosa

Table from REF. 64, Macmillan Publishers Limited.