iodine-125 plaque
Radioactive episcleral applicator containing I-125 seeds used for localized tumor irradiation. Standard treatment for medium-sized uveal melanomas.
Full Definition
A curved, episcleral radioactive plaque containing iodine-125 seeds arranged to deliver targeted radiation therapy to intraocular tumors, particularly uveal melanomas. The plaque is surgically positioned over the tumor site and delivers a calculated radiation dose over several days before removal. This treatment modality allows for globe preservation while achieving local tumor control, making accurate documentation of plaque specifications essential in treatment records.
Usage
Usage note: Hyphenate 'iodine-125' when used as a compound modifier. Use 'I-125' as acceptable abbreviation in subsequent references.
In Context
- "An iodine-125 plaque was placed for treatment of the posterior choroidal melanoma." — surgical procedure note
- "Post-operative care included monitoring for iodine-125 plaque displacement." — post-operative instruction