Table 1.

Patient characteristics.

Number of Patients	21
Gender, number (%) -Male -Female	10 (47.6%) 11 (52.4%)
Age >60 years, number (%)	11 (52.4%)
Tumour type, number (%)	DLBCL, 21 (100%)
Initial systemic therapy	HD-MTX chemotherapy, all patients
Number of HD-MTX chemotherapy cycles, median (range)	5 cycles (1 to 6 cycles)
Time from diagnosis to cranial radiation therapy, median (range)	4.5 months (1.7 to 47.8 months)
Time from completion of HD-MTX chemotherapy to cranial radiation therapy, median (range)	1.5 months (0.5 to 44.6 months)
Patients with WBRT dose >30 Gy, number (%)	12 (57.1%)
Patients who received a boost to gross disease, number (%)	14 (66.7%)