Table 1

Characteristics of chromoendoscopically identified lesions and correlation of chromoendoscopic and gastrectomy findings in patients with signet ring cell carcinoma detected on chromoendoscopic biopsy

Case	Age sex	Index chromoendoscopy*		Previous chromoendoscopies and pale lesions			Gastrectomy findings‡
Case	Age sex	Pale lesions H/L†: size (mm)	Biopsy result	Previous scopes	Pale lesions H/L†: size (mm)	Biopsy result	Total foci	Foci <4 mm	Foci 4–10 mm
*Most recent chromoendoscopy with pale lesions (in A–J, biopsy of ⩾1 lesion detected carcinoma).
†High or low suspicion for carcinoma (see methods).
‡All gastrectomies were macroscopically normal with no nodal metastases. Gastrectomies underwent detailed pathological mapping of total mucosal area except case A where only 30% of the mucosal area was mapped.¹³
A	39 M	H 10	Carcinoma	1	H NS	Normal	45	40	5
		L <3	Normal
B	28 M	H 8	Carcinoma	2			214	212	2
		L <3	Normal
C	15 F	H 3	Carcinoma	1			318	311	7
		H 3	Carcinoma
		L 3	Carcinoma
		L 3	Carcinoma
		L 3	Normal
D	34 F	L 3	Carcinoma	4			111	110	1
E	16 M	L 3	Carcinoma	Nil			15	15	Nil
F	45 F	H 3	Carcinoma	4			Gastric mapping pending
		H 3	Carcinoma
		L <3	Carcinoma
		L <3	Carcinoma
		L <3	Carcinoma
G	27 F	L 3	Carcinoma	4			Mapping pending
		L 3	Normal
H	20 F	H 5	Carcinoma	1	L 3	Normal	238	236	2
		H 5	Carcinoma,		L 3	Normal
		L 3	Carcinoma
		L 3	Carcinoma
		L 3	Carcinoma
		L <3	Normal
I	19 M	H 5	Carcinoma	1	L <3	Normal	Operation pending
		H 5	Carcinoma		L <3	Normal
		L 3	Carcinoma
		L 3	Normal
		L 3	Normal
		L 3	Normal
J	40 M	L 3	Carcinoma	5	L 3	Normal	Operation pending
K	28 M	L 3	Normal		L <3	Gastritis
		L <3	Normal		L <3	Gastritis
L	42 M	L 3	Normal		L NS	Gastritis
		L 3	Normal		L NS	Gastritis
M	45 F	L NS	Gastritis
		L NS	Gastritis
		L NS	Gastritis
N	39 F	L NS	Normal
		L NS	Normal
O	36 M	L <5	Gastritis	Nil
		L <5	Gastritis
		L <5	Gastritis
P	49 M	L NS	Normal
Q	20 M	L 2	Normal
R	18 F	L 2	Normal