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Table 4 Positive predictive value of contrast CT alone and of combination of the two methods

From: The role of PET/CT in detection of gastric cancer recurrence

Recurrence site

PPV(%) in Contrast CT +*

PPV(%) in Fusion PETCT +* and contrast CT +*

P-value

Overall recurrence

89.7(35/39)

88.0(22/25)

1.00

Lymph-node

81.8(18/22)

92.8(13/14)

0.62

Peritoneum

72.2(13/18)

85.7(6/7)

0.63

Remnant stomach or anastomosis

60.0(3/5)

75.5(3/4)

1.00

Liver

80.0(4/5)

100(3/3)

0.37

  1. *: There is a lesion which is suspicious for recurrence