Brachytherapy for malignant uveal melanoma.

Jørgen Krohn, Olav Dahl, Tone Nybø, Bård Kjersem
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引用次数: 2

Abstract

A previously healthy woman in her 20s noticed a gradual reduction in her vision and a shadow in the field of vision of her right eye. Ophthalmoscopy revealed a choroidal melanoma above and temporal to the macula (left-hand picture). MRI and ultrasound examination of the eye revealed a melanoma with an area of 8  10 mm and a thickness of 3 mm. There was subretinal fluid around the tumour and in the macular region, and visual acuity was 0.4. Further examination did not show any other malignancy, and the woman underwent episcleral brachytherapy. A circular silver plaque containing radioactive ruthenium (diameter 15 mm) was sutured onto the sclera in a position corresponding to the location of the tumour in the eye. The plaque was removed after three days. In the course of a few months, the sub-retinal fluid had been absorbed and the patient’s vision improved to 0.8. Two years after the treatment, her visual acuity remained at 0.8. Ophthalmoscopy showed that there had been radiation-induced atrophy of the tumour and surrounding tissue (right-hand picture). The circular atrophic zone around the tumour corresponded to the area where the ruthenium plaque had been located. The plaque was eccentrically located relative to the tumour in order to avoid radiation damage to the macula and optic nerve. Uveal melanoma is the most prevalent primary malignant ocular tumour in adults,
恶性葡萄膜黑色素瘤的近距离治疗。
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