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Table 2 Location and number of migrated seeds stratified according to treatment methods

From: Seed migration after transperineal interstitial prostate brachytherapy by using loose seeds: Japanese prostate cancer outcome study of permanent iodine-125 seed implantation (J-POPS) multi-institutional cohort study

 

PI (%)

PI + EBRT (%)

p*

Migration

   

 Yes

372 (22.7)

94 (18.1)

0.0276

 No

1269 (77.3)

425 (81.9)

 

Site of migration

   

 Lung

184 (49.5)

47 (50.0)

 

 Lung + pelvis

48 (12.9)

10 (10.6)

 

 Lung + abdomen

5 (1.3)

1 (1.1)

 

 Lung + abdomen + pelvis

2 (0.5)

-

 

 Lung + others

1 (0.3)

-

 

 Pelvis

115 (30.9)

30 (31.9)

 

 Abdomen

8 (2.2)

2 (2.1)

 

 Abdomen + pelvis

1 (0.3)

-

 

 Spinal venous plexus

-

1 (1.1)

 

 Thigh

2 (0.5)

-

 

 Unknown

6 (1.6)

3 (3.2)

 

Number of migrated seeds

   

 1

242 (65.1)

60 (65.2)

 

 2

84 (22.6)

21 (22.8)

 

 3

25 (6.7)

8 (8.7)

 

 4

9 (2.4)

2 (2.2)

 

 5

5 (1.3)

1 (1.1)

 

 6

3 (0.8)

-

 

 7

3 (0.8)

-

 

 8

-

-

 

 9

1 (0.3)

-

 
  1. *: Chi square test
  2. PI = permanent iodine-125 seed implantation; PI+EBRT = PI combined with external beam radiation therapy
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Radiation Oncology

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