Table 3 Comparative analysis between pathologic T3a and T3b patients according to SVI status on MRI.

From: Prognostic value of seminal vesicle invasion on preoperative multi-parametric magnetic resonance imaging in pathological stage T3b prostate cancer

N (%) or Mean ± SD

pT3a (N = 290)

pT3b (N = 159)

P

Negative SVI on MRI (N = 107)

Positive SVI on MRI (N = 52)

Age, years

67.4 ± 7.0

67.0 ± 7.2

66.9 ± 7.7

0.857

BMI, kg/m2

24.7 ± 3.1

24.6 ± 3.0

24.9 ± 3.3

0.831

Pre-biopsy PSA, ng/ml

13.4 ± 11.3

26.6 ± 29.7

62.5 ± 92.5

<0.001

RP GS category

   

<0.001

  3 + 3

1 (0.3%)

0 (0)

0 (0)

 

  3 + 4

78 (26.9%)

7 (6.5%)

1 (1.9%)

 

  4 + 3

133 (45.9%)

50 (46.7%)

16 (30.8%)

 

≥4 + 4

78 (26.9%)

50 (46.7%)

35 (67.3%)

 

Pathologic LNI, yes

7 (2.4%)

21 (21.4%)

18 (34.6%)

 

Pathologic PSM, yes

112 (38.6%)

43 (40.2%)

40 (76.9%)

<0.001

BCR, yes

37 (12.8%)

25 (23.4%)

20 (38.5%)

<0.001

  1. BCR, biochemical recurrence; BMI, body mass index; GS, Gleason score; LNI, lymph node invasion; MRI, magnetic resonance imaging; PSA, prostate-specific antigen; PSM, positive surgical margin; RP, radical prostatectomy; SVI, seminal vesicle invasion.
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