Prognostic factors and efficacy of postoperative chemotherapy in patients with gastric cancer with positive peritoneal cytology after gastrectomy

Table 1 Characteristics of patients with peritoneal lavage cytology-positive who underwent gastrectomy

Variables	All (n = 82)
Age	74.3 (42-96)
Sex
Male	56
Female	26
Performance status (ECOG)
0	56
1	20
2	6
Macroscopic type
Non-type 4	60
Type 4	22
Preoperative CEA
> ULN	21
≤ ULN	60
Unknown	1
Preoperative CA19-9	1
> ULN	25
≤ ULN	55
Unknown	2
Pathological T factor
T3	16
T4a	59
T4b	7
Pathological N factor
N0	1
N1-2	35
N3	46
Histology
Intestinal	31
Diffuse	51
HER2 status
Positive	14
Negative	46
Unknown	22
Surgery
Distal gastrectomy	43
Total gastrectomy	37
Proximal gastrectomy	2
Lymph node dissection
< D2	21
D2	48
D2+	13
Postoperative complication1
Yes (grade III)	22 (5)
No	60
Postoperative CTx
Yes	42
No	40

¹Clavien-Dindo classification.

ECOG: Eastern Cooperative Oncology Group; CEA: Carcinoembryonic antigen; ULN: Upper limit of normal; CA19-9: Carbohydrate antigen 19-9; HER2: Human epidermal growth factor receptor 2; CTx: Chemotherapy.