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Table 1 The clinical history, RT project, symptom, interval time from RT to MRI, associated fractures and additional imaging examination in 28 patients with radiation-induced SIF detected by MRI

From: Clinical and MRI features of sacral insufficiency fractures after radiotherapy in patients with cervical cancer

Patients

Postmenopausal

FIGO staging

RT project

Dose (Gy)

Symptom

Interval (Month)

Unilateral or bilateral SIF

Associated fractures

BS

CT

1

YES

IIA

Postoperative

50

Asymptomatic

10

Unilateral

NO

 + 

 + 

2

YES

IB1

Definitive

50

Asymptomatic

11

Bilateral

NO

 + 

NA

3

YES

IIB

Definitive

60

Asymptomatic

9

Unilateral

NO

 + 

NA

4

YES

IIA

Postoperative

56

Hip pain

6

Bilateral

NO

 + 

NA

5

YES

IIB

Definitive

50

Low back pain

13

Bilateral

Bilateral pubis, L5

 + 

NA

6

YES

IIIA

Definitive

50

Low back pain

13

Bilateral

Left acetabulum, L5

NA

 + 

7

YES

IB1

Definitive

50

Hip pain

14

Bilateral

L5

 + 

NA

8

YES

IIIB

Definitive

85

Hip pain

9

Bilateral

Bilateral pubis, L5

NA

 + 

9

YES

IB1

Definitive

60

Low back pain

4

Bilateral

Left ilium

 + 

NA

10

YES

IIA

Definitive

50

Asymptomatic

21

Bilateral

Left acetabulum

 + 

NA

11

YES

IV

Definitive

62

Asymptomatic

8

Unilateral

NO

NA

 + 

12

YES

IIB

Definitive

50

Asymptomatic

6

Unilateral

NO

NA

 + 

13

YES

IIB

Definitive

56

Hip pain

23

Bilateral

Right ilium

 + 

NA

14

YES

IVA

Definitive

63

Hip pain

34

Unilateral

Bilateral acetabulum

 + 

NA

15

YES

IVA

Definitive

90

Asymptomatic

5

Bilateral

Bilateral acetabulum

 + 

NA

16

YES

IIIB

Definitive

110

Hip pain

6

Unilateral

NO

 + 

NA

17

YES

IVA

Definitive

90

Hip pain

15

Bilateral

Left pubis

NA

 + 

18

YES

IIB

Definitive

50

Low back pain

7

Bilateral

NO

NA

 + 

19

YES

IIA

Definitive

50

Asymptomatic

3

Unilateral

NO

 + 

NA

20

YES

IIIB

Definitive

50

Hip pain

12

Bilateral

Bilateral ilium, pubis

 + 

NA

21

NO

IIIB

Postoperative

100

Asymptomatic

11

Unilateral

NO

NA

NA

22

YES

IIB

Definitive

68

Hip pain

7

Bilateral

Bilateral ilium

NA

 + 

23

YES

IIA

Definitive

62

Hip pain

11

Bilateral

Right acetabulum

NA

NA

24

YES

IIIB

Definitive

78

Hip pain

5

Bilateral

NO

NA

 + 

25

YES

IIB

Definitive

90

Asymptomatic

10

Bilateral

NO

 + 

NA

26

NO

IIB

Definitive

50

Hip pain

25

Bilateral

NO

NA

 + 

27

NO

IIIB

Definitive

110

Hip pain

5

Unilateral

Right ilium

NA

 + 

28

YES

IIIB

Definitive

50

Hip pain

12

Bilateral

Bilateral ilium

NA

NA

  1. FIGO International Federation of Gynecology and Obstetrics, RT Radiotherapy, BS Bone scan, NA Not available