Table 1 Patient Characteristics

Female sex, No. of patients (%)

6 (50)

10 (33)

Race, white, No. of patients (%)

12 (100)

30 (100)

Age, median (range), y

At radiotherapy

69 (55-82)

65 (51-86)

At initial DLE symptoms

47 (9-79)

-

At DLE diagnosis

45 (11-79)

-

DLE diagnosis

Established before radiotherapy, No. of patients (%)

9 (75)

-

Established after radiotherapy, No. of patients (%)

3 (25)

--

Time between DLE diagnosis and radiotherapy, median (range), y

--

Diagnosis first

9.0 (2.2-27.0)

-

Radiotherapy first

3.1 (1.7-6.3)

-

American College of Rheumatology systemic lupus erythematosus characteristic, No. of patients (%)

Discoid rash

12 (100)

-

Photosensitivity

9 (75)

-

Primary tumor location, No. of patients (%)

Prostate

4 (33)

8 (26)

Breast

2 (17)

4 (13)

Lung

2 (17)

8 (26)

Oral

2 (16)

6 (20)

Anus

1 (8)

2 (6)

Bladder

1 (8)

2 (6)