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Table 1 Patient characteristics (N = 27)

From: Impact of radiation dose on local control and survival in extramedullary head and neck plasmacytoma

Characteristic

Value

Percentage/range

Mean age at EMP Dx, y

56 y

42–86

Gender ratio

18 M: 9 F

 

Type of EMP

 Primary

15/27

56%

 Secondary

12/27

44%

Involved lymph nodes

 Yes

7/27

26%

 No

20/27

74%

Bone infiltration/erosion

 Yes

13/27

26%

 No

20/27

74%

Immunohistochemical analysis

 Kappa light chain restriction

11/27

41%

 Lambda light chain restriction

9/27

33%

 unknown

7/27

26%

Serum Beta-2-microglobulin

 Elevated

5/27

18%

 Normal

7/27

26%

 Unknown

15/27

56%

Serum protein

 Elevated

3/27

11%

 Normal

17/27

63%

 Low

3/27

11%

 Unknown

4/27

15%

Serum protein immunofixation

 Positive

14/27

52%

 Negative

9/27

33%

 Unknown

4/27

15%

Serum LDH

 Elevated

12/27

44%

 Normal

11/27

41%

 Unknown

4/27

15%

Serum calcium

 Elevated

1/27

4%

 Normal

21/27

78%

 Low

2/27

7%

 Unknown

3/27

11%

Prior or adjuvant therapies

 HSCT

12/27

44%

 TBI

3/27

11%

 Systemic immunochemotherapy

14/27

52%

  1. F female, M male, Med. median, LDH lactate dehydrogenase, HSCT Hematopoietic stem cell transplantation, TBI total body irradiation