Late-Onset Bilateral Malignant Ciliary Body Medulloepithelioma in an Adult.

We report the first case of bilateral malignant ciliary body medulloepithelioma (CBME) in an adult, with comprehensive histopathological and genomic analyses. The right eye harbored a malignant teratoid CBME with sarcomatous elements, while the left eye showed a non-teratoid variant. Whole-exome sequencing revealed shared chromosomal losses and additional aberrations in the teratoid tumor. No pathogenic germline mutations were identified. These findings suggest a potential correlation between histological subtype and genomic complexity in CBME.