Radiation therapy in primary central nervous system lymphoma

Area of Science:

• Oncology
• Neurology
• Radiotherapy

Background:

• Primary central nervous system lymphoma (PCNSL) treatment in Chinese populations is underreported.
• This study details radiotherapy management of PCNSL in Chinese patients.

Purpose of the Study:

• To analyze the clinical characteristics, treatment modalities, and outcomes of PCNSL patients treated with radiotherapy.
• To evaluate the efficacy and recurrence patterns of radiotherapy in Chinese PCNSL patients.

Main Methods:

• Retrospective review of 13 PCNSL patients' medical records (1988-1997).
• Analysis of clinical data, radiotherapy regimens (alone or combined with chemotherapy), and treatment responses.
• Follow-up computed tomography (CT) scans and survival rates were assessed.

Main Results:

• 13 patients (10 brain, 3 spinal) with PCNSL were identified; diffuse large cell lymphoma was most common.
• Initial complete or partial response to radiotherapy was observed in 100% of patients.
• Local recurrence rates were higher with radiotherapy alone (56%) compared to combined modalities (25%).
• Overall 2-year and 5-year survival rates were 54% and 27%, respectively.

Conclusions:

• Radiotherapy provides a satisfactory initial response for PCNSL.
• Frequent local relapse necessitates exploration of advanced treatment strategies.
• Future research should consider dose-escalated radiotherapy (e.g., 3D-CRT) and combined chemoradiotherapy.