Peritoneal lavage cytology and carcinoembryonic antigen determination in predicting peritoneal metastasis and prognosis of gastric cancer

Table 1 Correlation between the results of peritoneal washes and clinicopathological factors

Clinicopathological factors	N	PLC(+)		P	pCEA(+)		P
		n	%		n	%
Tumor size
≤4 cm	28	4	14.3	>0.05	9	32.1	>0.05
>4 cm	36	11	30.6		17	47.2
Histological type
Differentiated	30	5	16.7	>0.05	10	33.3	>0.05
Undifferentiated	34	10	29.4		16	47.1
Serosal invasion
Negative	27	2	7.4	<0.01	5	18.5	<0.01
Positive	37	13	35.1		21	56.8
Lymph node involvement
Negative	16	1	6.3	>0.05	3	18.8	<0.05
Positive	48	14	29.2		23	47.9

Table 2 Results of PLC and pCEA in predicting peritoneal recurrence of gastric cancer after surgery (%)

	Accuracy	Sensitivity	Specificity	Positivepredictive value	Negative	False	False
					predictive value	negative rate	positive rate
PLC	90.6	73.7	97.8	93.3	89.8	26.3	2.2
pCEA	85.9	94.7	82.2	69.2	97.4	5.3	17.8