Surgical treatment and prognosis of gastric cancer in 2613 patients

Table 1 Histological classification of the tumors in the 2613 patients with gastric cancer

Histological classification	Number	Percentage (%)
Well differentiated adenocarcinoma	528	20.2
Moderately differentiated adenocarcinoma	1102	42.2
Mucinous adenocarcinoma	560	21.4
Poorly differentiated adenocarcinoma	277	10.6
Others	146	5.6
Borrmann’s classification
Type I	179	6.9
Type II	477	18.3
Type III	1683	64.4
Type IV	129	4.9
Early-stage cancer	145	5.6

Table 2 Clinical data of the 1 975 patients with surgical resec-tion of the tumor

Characteristics	Number	Percentage (%)
Type of resection
Radical resection	1084	54.9
Palliative resection	891	45.1
Depth of invasion (T)
Mucosa/submucosa (PT1)	145	7.3
Muscularis (PT2)	347	17.6
Serosa (PT3)	978	49.5
Serosa and contiguous structure (PT4)	505	25.6
Lymph node involvement (N)
N0	207	10.5
N1	343	17.4
N2	936	47.4
N3	489	24.7
Stage
IA	125	6.3
IB	131	6.6
II	251	12.7
IIIA	404	20.5
IIIB	442	22.4
IV	622	31.5
Type of nodal dissection (radical resection)
D1	159	14.7
D2 / D2+	846	78.0
D3	79	7.3

Table 3 Univariate survival analysis of clinical and patho-logic variables after surgical treatment in 1 498 cases with gastric carcinoma

Parameter	Number	5-yr survival rate (%)	P
Age (yr)
≤ 30	19	21.0	0.05
30 to 60	926	29.2
> 60	553	36.2
Tumor location
C (upper third)	499	22.6	0.001
M (middle third)	312	35.3
A (lower third)	613	40.9
MCA (whole stomach)	74	2.7
Tumor size (cm)
<3	146	53.1	0.047
3 to 6	739	40.9
>6	613	15.3
Histological classification
Well differentiated adenocarcinoma	303	38.3	0.001
Moderately differentiated adenocarcinoma	631	36.7
Mucinous adenocarcinoma	321	28.3
Poorly differentiated adenocarcinoma	159	15.7
Others	84	13.1
Type of operation
DSTG	678	37.2	0.001
TG	466	32.4
PSG	354	20.1
Borrmann’s classification
Type I	103	61.1	0.001
Type II	274	45.2
Type III	964	20.1
Type IV	74	2.7
Early cancer	83	90.0
Type of resection
Radical resection	822	51.2	0.001
Palliative resection	676	7.8
Extent of nodal dissection
D1	120	34.5	0.001
D2 to D2+	641	53.5
D3	61	50.8
Depth of cancer invasion
T1	110	90.4	0.001
T2	263	55.2
T3	742	25.9
T4	383	10.0
Lymph node involvement
N0	157	86.1	0.001
N1	260	58.1
N2	710	23.3
N3	371	5.9

Table 4 Multivariate analysis of prognostic variables for sur-vival

Variables	Regression coefficient	P
Type of resection	0.45729	0.000811
Extent of nodal dissection	0.35851	0.004791
Borrmann’s classification	0.42583	0.002951
Tumor location	0.25409	0.15204
Depth of cancer invasion	0.43839	0.002831
Lymph node involvement	0.26738	0.14962
Type of operation	0.25016	0.15978
Tumour size	0.00421	0.97279

¹Significant difference.