Surgical Outcomes and Clinicopathological Characteristics of Patients Who Underwent Potentially Noncurative Endoscopic Resection for Gastric Cancer: A Report of a Single-Center Experience

Table 1

Clinicopathological findings of patients (𝑛=41).

Variables	Number of subjects (%)
Sex
Male	38 (92.7)
Female	3 (7.3)
Endoscopic treatment
Mucosal resection	9 (22.0)
Submucosal dissection	32 (78.0)
Surgical indication
Submucosal tumor invasion	37 (90.2)
Lymphatic or venous invasion	27 (65.9)
Undifferentiated component^†	24 (58.5)
Horizontal margin involvement	4 (9.8)
Vertical margin involvement	14 (34.1)
Surgical approach
Laparoscopy	34 (82.9)
Hand assistance	4 (9.8)
Open laparotomy	3 (7.3)
Extent of gastrectomy
Partial	5 (12.2)
Proximal	9 (22.0)
Distal	20 (48.8)
Total	7 (17.1)
Remnant of primary tumor (surgical specimen)
No	35 (85.4)
Yes	6 (14.6)
Depth of tumor invasion^‡
pT1a	4 (9.8)
pT1b1	4 (9.8)
pT1b2	33 (80.5)
Lymph node metastasis (surgical specimen)
pN0	37 (90.2)
pN1	4 (9.8)
TNM stage (surgical specimen)
fStage IA	37 (90.2)
fStage IB	4 (9.8)

†Differentiated: well-differentiated adenocarcinoma, moderately differentiated adenocarcinoma, or papillary adenocarcinoma; undifferentiated: poorly differentiated adenocarcinoma, signet-ring cell adenocarcinoma, or mucinous adenocarcinoma.
^‡According to the third English edition of the Japanese Classification of Gastric Carcinoma.