Fig. 1.

Comparison of diagnostic ability of peritoneal metastasis by each tumor marker. Solid bar: sensitivity; open bar: specificity; shaded bar: diagnostic accuracy. Sensitivity=(patients with peritoneal metastasis with positive tests/all patients with peritoneal metastasis tested) ×100; Specificity=(patients without peritoneal metastasis with negative tests/all patients without peritoneal metastasis tested) ×100; Diagnostic accuracy=(patients with peritoneal metastasis with positive tests+patients without peritoneal metastasis with negative tests)/(all patients tested) ×100.