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The Collaborative Ocular Melanoma Study: an overview.

Curtis E Margo1

  • 1Department of Opthalmology, Watson Clinic, LLP, Lakeland, FL 33805, USA. cmargo@watsonclinic.com

Cancer Control : Journal of the Moffitt Cancer Center
|September 21, 2004
PubMed
Summary
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The Collaborative Ocular Melanoma Study (COMS) found no survival difference between brachytherapy and enucleation for medium or large choroidal melanomas. Preoperative radiation also did not improve survival for large melanomas.

Area of Science:

  • Ophthalmology
  • Oncology
  • Clinical Trials

Background:

  • The Collaborative Ocular Melanoma Study (COMS) involved randomized clinical trials and an observational study.
  • It focused on treatments for medium-size, large, and small choroidal melanomas.
  • Patient accrual occurred between 1987 and 1998.

Purpose of the Study:

  • To compare brachytherapy versus enucleation for medium choroidal melanomas.
  • To evaluate enucleation with or without preoperative radiotherapy for large choroidal melanomas.
  • To observe small choroidal melanomas.

Main Methods:

  • A review of published reports from the COMS trials was performed.
  • The study design included multicenter randomized clinical trials and observational data.

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  • Data analysis focused on primary outcomes like mortality and secondary outcomes such as vision preservation.

    • Main Results:

    • No significant difference in 5-year all-cause mortality was observed between brachytherapy and enucleation for medium and large choroidal melanomas.
    • Preoperative external-beam radiotherapy did not improve survival rates for large choroidal melanomas.
    • The clinical diagnosis of choroidal melanoma demonstrated excellent accuracy.

    Conclusions:

    • While data analysis continues, primary outcomes are unlikely to change significantly.
    • Similar mortality rates between treatments emphasize the importance of secondary outcomes like vision preservation.
    • Further research is needed to understand hematogenous dissemination mechanisms to improve choroidal melanoma survival.