Metastatic carcinoma of the choroid and other ocular structures is of sufficiently rare occurrence to make the following report of interest. Carcinoma involving the intra-ocular and extra-ocular tissues is considered a secondary growth arising from a primary neoplasm situated elsewhere in the body. In about 70 per cent of such cases the primary growth is carcinoma of the mammary gland, other primary foci being the lungs, the stomach, the prostate and other organs. Sometimes the primary growth cannot be located during life and is revealed only by a general autopsy. The ocular lesion may be the only visible evidence of metastasis ; hence a systematic ocular examination should be performed in all cases of carcinoma. In this condition the media are clear, permitting a distinct view of the fundi. The characteristic finding is the choroidal tumor, which is flat and grayish. It is situated temporally around the posterior pole, where