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This abstract is assigned to session AOB Free Papers 2

Presentation type	Oral presentation
Title	Ruthenium Brachytherapy in Uveal Melanoma

Purpose	Review of 136 uveal melanomas treated with ruthenium brachytherapy between 2019 and 2022. All tumors were treated with a top dosis of 100 Gy.
Methods	Of 167 irradiations with ruthenium brachytherapy, 136 were applicated for uveal melanomas. We performed a retrospective analysis of the patients, the complications, local recurrence, and survival. In comparison with the literature available for ruthenium brachytherapy in uveal melanomas. On this moment three different radioactive plaques are available in UZLeuven for different tumor sizes and localisations.
Results	Of 136 uveal melanomas, there were 3 patients with persistent vitreal hemorrahges, 1 patient with persistent diplopia the first 4 months, 8 with (amplification of their) serous detachments. One patient developed an orbital recurrence. Five patients died of melanoma during the follow-up. Three patients were re-treated because of local recurrence.
Conclusion	Ruthenium brachytherapy is a good and safe procedure for treatment of uveal melanomas.
Conflict of interest	No

Authors 1

Last name	MISSOTTEN
Initials	G
Department	University Hospitals Leuven, Catholic University.
City	Leuven

Authors 2

Last name	Christiaens
Initials	M
Department	University Hospitals Leuven, Catholic University.
City	Leuven

Authors 3

Last name	Clement
Initials	P
Department	University Hospitals Leuven, Catholic University
City	Leuven

Authors 4

Last name	Van Ginderdeuren
Initials	R
Department	University Hospitals Leuven, Catholic University
City	Leuven

Authors 5

Last name	Van Calster
Initials	J
Department	University Hospitals Leuven, Leuven University
City	Leuven