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  • Title: The International Classification of Retinoblastoma predicts chemoreduction success.
    Author: Shields CL, Mashayekhi A, Au AK, Czyz C, Leahey A, Meadows AT, Shields JA.
    Journal: Ophthalmology; 2006 Dec; 113(12):2276-80. PubMed ID: 16996605.
    Abstract:
    PURPOSE: To evaluate the reliability of the International Classification of Retinoblastoma (ICRB) for predicting treatment success with chemoreduction (CRD). DESIGN: Noncomparative interventional case series. PARTICIPANTS: Two hundred forty-nine consecutive eyes. METHODS: All eyes were treated with CRD and were classified according to the ICRB: group A included those eyes with retinoblastoma </=3 mm; group B included those eyes with retinoblastoma >3 mm, macular location, or minor subretinal fluid; group C included those eyes with retinoblastoma with localized seeds; group D included those eyes with retinoblastoma with diffuse seeds; group E included those eyes with massive retinoblastoma necessitating enucleation. The CRD regimen included vincristine, etoposide, and carboplatin for 6 cycles plus local consolidation with thermotherapy or cryotherapy. MAIN OUTCOME MEASURE: Chemoreduction success, defined as avoidance of external beam radiotherapy or enucleation. RESULTS: Of the 249 eyes, 23 (9%) were in group A, 96 (39%) were in group B, 21 (8%) were in group C, and 109 (44%) were in group D. In this series, group E eyes were managed with enucleation. Treatment success was achieved in 100% of group A, 93% of group B, 90% of group C, and 47% of group D eyes. CONCLUSIONS: The ICRB can be of assistance in predicting CRD success for retinoblastoma. Additional treatment methods are necessary to salvage more group D eyes.
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