About this trial
Current standard RT doses (24-25Gy) provide excellent disease control for patients with indolent B-cell orbital lymphoma, but can cause significant late toxicities. Ultra-low dose RT (4Gy in 2 fractions) has minimal toxicity but lower disease control, requiring intensive follow-up to salvage persistent tumors. Some centers are moving towards this dose as the new standard. A recent study using 12Gy in 4 fractions to any body site showed early data suggesting high disease control rates with minimal toxicity. This study assesses 12Gy in 6 fractions, aiming to enhance disease control over 4Gy while reducing toxicity compared to 24Gy.
Eligibility criteria
Qualifiers
Age ≥18 years with stage I-IV indolent NHL*
Able to provide informed consent
Histologically confirmed indolent NHL involving one or both orbits. If bilateral, biopsy of only one orbit is permitted as long as high clinical suspicion of contralateral orbit involvement
Measurable orbital disease after biopsy, either clinically or radiographically
Disqualifiers
Aggressive NHL histology (including grade 3B follicular lymphoma)
Prior RT to orbit
Patients requiring treatments outside standard clinical hours
Systemic therapy for lymphoma is not permitted within the period of time between 2 weeks prior to RT start and 2 weeks after RT completion
Trial design
Treatments tested in this trial
- External Beam Radiation Therapy