Table 2. Patient characteristics for tissue analysis by immunohistochemistrya.
| Gender | Lymph node metastasis b | ||
| Male | 11 | N0 | 41 |
| Female | 29 | N1 | 24 |
| Age (years) | N2 | 15 | |
| 18–86 (Avg: 68) | N3 | 5 | |
| Peritoneal metastasis c | Histologic type d | ||
| P0 | |||
| P1 | 16 | pap | 3 |
| tub1 | 25 | ||
| tub2 | 19 | ||
| Cytology e | |||
| CY0 | |||
| CY1 | 9 | por1 | 17 |
| por2 | 13 | ||
| sig | 4 | ||
| Hepatic metastasis f | |||
| H0 | |||
| H1 | 7 | muc | 3 |
| ads | 1 | ||
| Depth of invasion g | |||
| T1 | 30 | ||
| T2 | 27 | Stage | 30 |
| T3 | 24 | Ia | 11 |
| T4 | 4 | Ib | 10 |
| II | 4 | ||
| IIIa | 5 | ||
| IIIb | 25 | ||
| IV | |||
Patient characteristics were determined according to the Japanese Classification of Gastric Carcinoma (2nd edition).
N0, none; N1, metastasis to Group 1 lymph nodes; N2, metastasis to Group 2 lymph nodes; N3, metastasis to Group 3 lymph nodes.
P0, absent; P1, present.
pap, papillary adenocarcinoma; tub1, well-differentiated tubular adenocarcinoma; tub2, moderately differentiated tubular adenocarcinoma; por1, poorly differentiated adenocarcinoma (solid type); por2, poorly differentiated adenocarcinoma (nonsolid type); sig, signet-ring cell carcinoma; muc, mucinous adenocarcinoma; ads, adenosquamous carcinoma.
Cytology in peritoneal washings; CY0, negative; CY1, positive.
H0, absent; H1, present.
T1, within mucosa or submucosa; T2, until muscularis propria or subserosa; T3, penetration of serosa; T4, invasion of adjacent structures.