Table 1 Baseline characteristics of all patients.

From: Antiepileptic drugs failed to prevent initial seizures or improve survival outcomes in patients with primary CNS lymphoma

Clinical characteristics

Patients (n)

Range/percentage (%)

Age, years

 Median (range)

62

19–81

Gender

 Male

128

59.81

 Female

86

40.19

Epileptic seizures

 > 1

36

16.82

 None

178

83.18

MRI findings

 Solitary lesion

112

52.33

 Multifocal

102

47.66

 Small lesions1

95

46.12

 Bulky disease

111

53.88

 Deep lesion2

154

76.24

 Non-deep lesion

48

23.76

 Cortex involvement

65

32.02

 No cortex involvement

138

67.98

Electroencephalogram

 Normal

25

27.17

 Abnormal patterns3

67

72.83

Prophylactic antiepileptic drugs

 Yes

123

57.48

 No

91

42.52

  1. ECOG, Eastern Cooperative Oncology Group; MTX, methotrexate; Non-GCB, nongerminal center B cell.
  2. 1Deep lesions: Lesions located more than 3 cm from the brain surface.
  3. 2For small lesions, the lesion diameter was less than 3 cm.
  4. 3Abnormal patterns: These patterns include the θ wave, the δ wave, the β wave, and the spike wave.
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