Table 2

Normal values for kidney length pole to pole, cortical and parenchymal width, classified according to the side of the kidney, and gender

Mean

Median

95% Confidence interval of mean

SD

2% Percentile

10% Percentile

90% Percentile

98% Percentile

Wilcoxon test


(mm)

(mm)

Lower

Upper

(mm)

(mm)

(mm)

(mm)

(mm)

p value


Women

Kidney length right side

103.8

104

102.8

104.9

11.1

79.6

90.31

117.9

128.0

<0.0001

Kidney length left side

106.3

106

105.3

107.4

11.5

82.5

92.12

121.9

130.9

Parenchymal width right

14.5

14.4

14.3

14.7

2.6

8.9

14.26

14.74

20.4

<0.0001

Parenchymal width left

15

14.8

14.7

15.2

2.4

10.7

12.3

18.4

20.2

Cortical width right side

6.2

6.1

6.1

6.3

1.3

3.8

4.6

8.2

9.4

ns

Cortical width left side

6.2

6.2

6.1

6.3

1.2

3.7

4.7

7.7

8.6

Width right (axial planes)

48

47.2

47.3

48.6

7.2

34.9

40.2

57.6

65.2

<0.0001

Width left (axial planes)

49.4

49.3

48.7

50.1

7.4

35.8

40.6

58.1

67.6

Length right (axial planes)

55.8

55.8

55

56.6

7.9

39.5

46.8

64.6

73.9

<0.0001

Length left (axial planes)

51.2

50.8

50.4

52.1

8.3

35.6

42

61.9

71.5

Width of the pyelon (right side)

16.9

16.1

16.4

17.4

5.7

7.5

10.3

11.5

31.3

<0.0001

Width of the pyelon (left side)

18.0

17.1

17.5

18.5

5.6

9.1

24.6

26.0

30.9

Parenchym/pyelon ratio (right side)

1.0

0.9

0.9

1.0

0.4

0.4

0.6

1.4

1.8

= 0.0215

Parenchym/pyelon ratio (left side)

0.9

0.9

0.9

1.0

0.6

0.4

0.5

1.3

1.8


Men

Kidney length right side

112.0

112.0

111.1

113.0

11.6

87.8

99.0

126.0

136.4

<0.0001

Kidney length left side

114.9

115.0

113.9

115.9

12.0

88.0

100.0

130.0

140.0

Parenchymal width right

16.3

16.1

15.9

16.4

2.7

10.4

12.9

19.5

21.8

= 0.0002

Parenchymal width left

16.5

16.4

16.3

16.7

2.4

11.3

13.2

19.8

22.3

Cortical width right side

6.8

6.7

6.7

7.0

2.2

3.9

5.0

8.6

10.2

= 0.0470

Cortical width left side

7.0

6.9

6.8

7.2

2.7

4.3

5.0

8.8

10.1

Width right (axial planes)

53.9

53.4

53.3

54.5

7.2

39.7

45.4

63.0

70.2

<0.0001

Width left (axial planes)

56.4

56.3

55.8

57.4

7.5

42.1

47.4

65.6

73.1

Length right (axial planes)

59.3

58.9

58.5

60.0

7.9

44.5

50.0

69.0

78.0

<0.0001

Length left (axial planes)

55.5

54.5

54.8

56.3

8.0

39.6

45.9

66.5

74.4

Width of the pyelon (right side)

19.7

18.7

19.1

20.2

19.7

8.3

12.5

28.0

35.06

<0.0001

Width of the pyelon (left side)

21.5

20.7

20.9

22.0

21.5

9.6

13.8

30.7

35.1

Parenchym/pyelon ratio (right side)

0.9

0.8

0.9

1.0

0.5

0.4

0.5

1.4

2.0

<0.0001

Parenchym/pyelon ratio (left side)

0.9

0.8

0.8

0.9

0.4

0.4

0.5

1.3

1.8


Glodny et al. BMC Urology 2009 9:19   doi:10.1186/1471-2490-9-19

Open Data