Table 2 Clinical nodal staging scores for selected values of the number of LNs examined in the development cohort of 4770 patients who underwent radical prostatectomy and bilateral pelvic lymph node dissection for localised prostate cancer

From: Clinical nodal staging scores for prostate cancer: a proposal for preoperative risk assessment

No. of examined LNs

1

3

5

8

10

12

15

20

Clinical T stage

T1

92.4

94.4

95.9

97.3

97.9

98.4

98.9

99.3

T2

80.7

85.4

88.9

92.5

94.2

96.4

96.8

98.1

T3

80.3

86.3

89.2

91.4

93.8

96.3

Bx Gleason score

6

95.5

96.8

97.6

98.5

98.8

99.0

99.4

99.6

7

88.0

91.2

93.4

95.6

96.6

97.4

98.1

98.9

8–10

74.8

80.6

85.0

89.8

92.0

93.7

95.5

97.3

Preoperative PSA (ng ml−1)

<10

91.9

94.1

95.6

97.1

97.8

98.3

98.8

99.3

10

81.5

86.1

89.4

92.9

94.5

95.7

96.9

98.2

Risk stratification

Low risk

96.1

97.3

98.1

98.8

99.1

99.4

99.6

99.8

Intermediate risk

89.6

92.6

94.7

96.7

97.6

98.2

98.8

99.2

High risk

74.3

80.8

85.7

90.8

93.1

94.7

96.5

98.1

  1. Abbreviations: LNs=lymph nodes; PSA=prostate-specific antigen.