Table 3.

Histopathologic tumour characteristics of all patients with T1b oesophageal adenocarcinoma on endoscopic mucosal resection who underwent surgery - comparison of endoscopic and surgical resection specimens’ pathology report

Case	Endoscopic resection specimen	Surgical resection specimen	Note
1	Sm1, G3, LVI-, R1	T1a, LVI-, R0	/
2	Sm1, G3, LVI-, R1	T1b Sm1, G3, R0	/
3	SmX, G2, LVI-, R1	T1b, G3, LVI-, R0	/
4	Sm2/3, G3, LVI-, R1	No residual cancer	LGD in surgical margin
5	Sm1, G2, LVI-, R1	No residual cancer	HGD in surgical margin
6	Sm1, G3, LVI-, R1	T1b, G2, R0	/
7	Sm2/3, G3, LVI+, R1	T1a, G3, R0	Positive for LNM (2/16)
8	Sm2/3, G2, LVI-, R1	No residual cancer	LGD in surgical margin
9	Sm2/3, G3, LVI-, R1	No residual cancer	/
10	Sm2/3, G3, LVI-, R1	T1a, G3, LVI+, R0	/
11	Sm2/3, G3, LVIX, R1	T1b, G2, R0	Positive for LNM (3/12)
12	Sm2/3, G3, LVI+, R1	T2, G3, R1	R1, negative for LNM (16), preop EUS T1b
13	Sm2/3, G2, LVI+, R1	No residual cancer	/
14	Sm1, G3, LVI+, R1	T1b, G1, LVI-, R0	/
15	SmX, G3, LVI+, R1	T1b, G3, R0	Positive for LNM (1/23)
16	Sm2/3, G3, LVI+, R1	No residual cancer	/
17	Sm1, G3, LVIX, R1	T2, R0	Preop EUS T1 stage
18	SmX, G3, LVI+, R1	T3, G3, R0	Positive for LNM (3/78), preop EUS T1b
19	Sm2/3, G3, LVI-, R1	T1a, G3, R0	/
20	Sm2/3, G2, LVI-, R1	T1, R0	/
21	SmX, G3, LVI-, R1	No residual cancer	/
22	Sm1, G2, LVI-, R0	No residual cancer	LR tumour, HGD in surgical margin

Sm1: Submucosal invasion < 500 μm; Sm2/3: Submucosal invasion > 500 μm; G1: Well differentiated tumour; G2: Moderately differentiated tumour; G3: Poorly differentiated tumour; LVI: Lymphovascular invasion; R0: Complete resection; R1: Incomplete resection; X: Indefinite; LNM: Lymph node metastases; LGD: Low grade dysplasia; HGD: High grade dysplasia; LR: Low-risk tumour; HR: High-risk tumour.