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Updated: Jun 1, 2026
06:52
Reconstruct Human Retinoblastoma In Vitro
Published on: October 11, 2022
Evolution in regression patterns following chemoreduction for retinoblastoma.
Melis Palamar1, Archana Thangappan, Carol L Shields
1Ocular Oncology Service, Wills Eye Institute, Philadelphia, PA 19107, USA.
Archives of Ophthalmology (Chicago, Ill. : 1960)
|June 15, 2011
Summary
Retinoblastoma regression patterns, specifically types 2 and 3, can evolve over time after treatment. Ophthalmologists should recognize these changes in retinoblastoma scar appearance.
Area of Science:
- Ophthalmology
- Pediatric Oncology
- Medical Imaging
Background:
- Retinoblastoma treatment involves chemoreduction followed by consolidation therapy.
- Understanding tumor regression patterns is crucial for monitoring treatment efficacy.
- Established classification systems exist for retinoblastoma regression post-therapy.
Purpose of the Study:
- To evaluate the evolution of retinoblastoma regression patterns after chemoreduction and consolidation therapy.
- To identify changes in scar appearance over time in treated retinoblastoma eyes.
Main Methods:
- Retrospective analysis of 557 retinoblastomas in 157 patients.
- Classification of regression patterns into types 0-4 based on calcification and appearance.
- Longitudinal observation of regression pattern changes over a mean follow-up of 56 months.
Main Results:
- Immediately post-chemoreduction, patterns were: type 0 (2%), 1 (30%), 2 (3%), 3 (33%), 4 (32%).
- Types 0, 1, and 4 patterns remained stable.
- Types 2 and 3 patterns showed evolution: type 2 evolved to types 4, 3, or 1; type 3 evolved to type 1.
Conclusions:
- Retinoblastoma regression patterns, particularly types 2 and 3, can exhibit slow evolution even without further intervention.
- Ophthalmologists must be aware of these potential changes in scar morphology.
- This understanding aids in accurate assessment of treatment response in retinoblastoma.
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