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Table 7 Validity of MRI and contrast series in diagnosis of different types of perianal fistula

From: Magnetic resonance imaging in the workup of patients with perianal fistulas

Pathological lesions

Sensitivity (%)

Specificity (%)

PPV

NPV

Accuracy

Perianal fistula

100

100

100

100

100

2ry tract

83

100

100

95

96

Abscess

100

100

100

100

100

  1. NB values are given as percentage: NPV Negative predictive value; PPV Positive predictive value