Table 2 Structural CT lesions in secondary hyperparathyroidism compared with controls. sHPT secondary hyperparathyroidism, SD standard deviation. Significantly (p < 0.05) values are printed in bold. P-values were derived from Chi2 tests for nominal and Mann–Whitney-U tests for continuous data.

From: Asymptomatic secondary hyperparathyroidism can mimic sacroiliitis on computed tomography

Lesion type

 

sHPT (n = 56)

Controls (n = 259)

p-values

Erosion

Erosion score (0–72), mean (SD)

2.6 (7.4)

0.6 (2.7)

0.001

Erosion ventral ilium present, n (%)

16 (28.6)*

36 (13.9)

0.016

Erosion ventral sacrum present, n (%)

6 (10.7)

12 (4.6)

0.105

Erosion middle ilium present, n (%)

10 (17.9)*

20 (7.7)

0.040

Erosion middle sacrum present, n (%)

2 (3.6)

2 (0.8)

0.147

Erosion dorsal ilium present, n (%)

6 (10.7)*

9 (3.5)

0.033

Erosion dorsal sacrum present, n (%)

3 (5.4)*

1 (0.4)

0.019

Sclerosis

Sclerosis score (0–48), mean (SD)

3.0 (3.0)

3.5 (3.2)

0.300

Sclerosis ventral ilium present, n (%)

34 (60.7)

151 (58.3)

0.767

Sclerosis ventral sacrum present, n (%)

9 (16.1)

68 (26.3)

0.124

Sclerosis middle ilium present, n (%)

15 (26.8)

74 (28.6)

0.871

Sclerosis middle sacrum present, n (%)

2 (3.6)

14 (5.4)

0.746

Sclerosis dorsal ilium present, n (%)

14 (25.0)

91 (35.1)

0.162

Sclerosis dorsal sacrum present, n (%)

8 (14.3)

45 (17.4)

0.695

Joint space alterations

Joint space alterations score, mean (SD)

0.6 (1.3)

0.4 (1.3)

0.586

Pseudo-widening present, n (%)

3 (5.4)

4 (1.5)

0.110

Partial ankylosis present, n (%)

2 (3.6)

13 (5.0)

> 0.999

Osteophytes

Osteophyte score (0–12), mean (SD)

1.5 (2.0)

2.3 (2.3)*

0.020

Osteophyte ventral present, n (%)

18 (32.1)

102 (39.4)

0.364

Osteophyte dorsal present, n (%)

18 (32.1)

134 (51.7)*

0.008

Calcification

Calcification score, mean (SD)

0.6 (1.1)

0.4 (0.9)

0.091

Calcification present, n (%)

15 (26.8)

45 (17.4)

0.132

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