Infusion port site tumor seeding after pars plana vitrectomy-assisted biopsy of choroidal melanoma.

PURPOSE:To report a rare case of infusion port site tumor seeding of choroidal melanoma after pars plana vitrectomy-assisted biopsy and successful treatment with second plaque brachytherapy. METHODS:Observational case report with clinical data and diagnostic images. RESULTS:A 55-year-old White woman diagnosed with choroidal melanoma of the left eye was found to have a second intraocular tumor 30 months after plaque brachytherapy and pars plana vitrectomy-assisted tumor biopsy. The second melanoma developed at the 5 o'clock vitrectomy infusion port site. The tumor regressed after plaque brachytherapy, and the patient has not developed systemic metastasis 5 years after diagnosis of intraocular seeding. CONCLUSION:Intraocular seeding into the infusion port site, although rare, may be encountered after pars plana vitrectomy-assisted biopsy of choroidal melanoma.