Author

Patient (n)

Index Site

to SPT (Yrs)

Incidence of SPT

Site of SPT

HNSCC-SPT

Lung-SPT

Oesophagus-SPT

Remote-SPT

No

%

No

%

No

%

No

%

No

%

Berg¹³

1651

HNSCC

-

167

10.1

30

1.8

39

2.4

11

0.7

-

-

Boice¹⁴

4139

Larynx

1-4

541

13.1

40

1.0

178

4.3

19

0.5

139

3.4

Brown¹⁵

1600

HNSCC

5

61

3.8

16

1

18

1.1

-

-

17

1.1

Cohn¹⁶

267

Larynx

-

44

17

16

6.0

10

3.7

12

4.5

10

3.7

De Viri¹⁸

1660

Larynx

5.5

84

5

5

0.3

25

1.5

4

0.2

52

3.1

DeVries²⁹

748

Larynx

4

104

14

9

1.2

64

8.6

0

0

31

4.1

Gluckman¹⁹

5337

HNSCC

-

548

11.2

246

5.0

181

3.7

120

2.5

-

-

Haughey²⁰

3706

HNSCC

-

475

12.8

246

6.6

106

2.9

17

0.5

159

4.3

Larson¹⁰

875

HNSCC

1.5

207

23.7

126

14.4

54

6.2

13

1.5

-

-

Leon⁶

1074

Larynx

-

169

15.7

48

4.5

66

6.1

13

1.2

39

3.9

Lin⁵

662

Larynx

-

51

7.7

6

0.9

31

4.7

2

0.3

-

-

Lundgren²¹

295

Larynx

6.3

32

10.8

10

3.4

12

4.1

2

0.7

-

-

Masaki²²

3162

HNSCC

-

182

5.8

66

2.1

34

1.1

-

-

18

0.6

McDonald²³

235

Larynx

4

50

21

9

3.8

22

9.4

-

-

16

6.8

Miyahara²⁴

1389

Larynx

0-23

138

9.95

43

3.1

23

1.7

3

0.2

68

4.9

Olsen²⁵

3847

HNSCC

1-4

368

9.6

16

0.4

131

3.4

-

-

100

2.6

Tsou⁴

1477

HNSCC

1.9

108

7.3

63

4.2

5

0.3

14

0.9

39

2.6

Vaamonde³

636

HNSCC

-

48

7.5

34

5.3

7

1.1

4

0.6

3

0.5

Wagenfeld³⁰

740

Larynx

-

48

6.5

16

48

25

52

-

-

-

-

Farhadieh⁸

987

Larynx

3.5

143

14.5

83

8.4

56

5.7

4

0.41

65

6.6