Table 6: Causes of m/sm1 cancer being classified as EUS-SM2 or deeper.

67 lesions

Wrong evaluation of ulcerative change44 (65.6%)
Presence of cystic change beneath the lesion2 (3.0%)
Unknown21 (31.3%)

m/sm1 refers to histologically determined depths and EUS-SM2 or deeper refers to depths of EGC invasion determined by EUS (see text for full description).