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Published on: February 12, 2017
[Solitary iris metastasis from breast cancer. Effective local therapy with electron beam irradiation]
Background:
The prevalence of intraocular metastases from breast cancer is approximately 4-5%. Solitary metastases of the iris are rare. We report on successful treatment of a solitary iris metastasis using electron beam irradiation.
Case Report:
A 30-year-old patient presented with an amelanotic tumor of the iris and the anterior chamber angle of her right amblyopic eye. The patient had undergone left-sided breast-conserving surgery and lymph node dissection 3 years before followed by chemotherapy and radiotherapy. The iris tumor was considered a metastasis. Fractionated electron beam irradiation was performed applying a total dose of 50 Gy in fractions of 5 x 2 Gy/week, electrons (9 MeV). The iris metastasis was completely resolved 13 months after radiotherapy. Until now no signs of cataract have been detected and visual acuity has remained stable.
Conclusion:
Electron beam irradiation of this iris metastasis was an effective treatment for preserving visual acuity and ocular function with tolerable acute toxicity and so far no adverse side effects.
