Diagnostic vitrectomy in metastatic breast carcinoma in the vitreous

Pars plana vitrectomy was employed to establish the diagnosis of intraocular carcinoma in a 72-year-old woman with a history of breast carcinoma and cerebral astrocytoma. Cytologic study of the material obtained from the vitreous cavity established the diagnosis of metastatic breast carcinoma, and this was later confirmed by study of the eyes obtained postmortem. The clinical and cytologic features of the ocular metastasis of breast carcinoma are presented.