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Table 3 Diagnostic performance of preoperative TRUS and mpMRI for detection of extracapsular extension in the studied 58 patients

From: Feasibility of multi-parametric magnetic resonance imaging in detection and local staging of prostatic carcinoma

Cancer site (number)

TRUS

mpMRI

Histopathology

 

Test + ve

Test − ve

Test + ve

Test − ve

 
 

3

6

9

0

9

True + ve

 

8

41

1

48

49

True − ve

Sensitivity (%)

33.33 (95% CI 07.49–70.07)

100 (95% CI 66.37–100)

 

Specificity (%)

83.67 (95% CI 70.34–92.86)

97.96 (95% CI 89.15–99.95)

 

Positive predictive value (%)

27.27 (95% CI 06.02–60.97)

90.00 (95% CI 55.50–99.75)

 

Negative predictive value (%)

87.23 (95% CI 74.26–95.17)

100 (95% CI 92.60–100)

 

Positive likelihood ratio

02.04 (95% CI 00.67–06.26)

49.00 (95% CI 07.04–340.94)

 

Negative likelihood ratio

00.80 (95% CI 00.49–01.29)

0.00

 

AUC

00.59 (95% CI 00.45–00.71)

00.99 (95% CI 00.92–1.00)

 
  1. AUC area under the curve, LHR likelihood ratio, mpMRI multi-parametric magnetic resonance imaging, PV predictive value