A 72-year-old woman was admitted to our hospital because of a mass shadow in the left upper lobe on chest roentgenograms. She had noticed floaters in both visual fields 2 months before admission. Percutaneous aspiration of the lung lesion was done, and revealed poorly differentiated squamous cell carcinoma. Metastatic tumors were noted in the choroid of both eyes and in both kidneys. These lesions responded partially to systemic chemotherapy and the floaters disappeared. There have been few reports of metastatic choroidal tumors, but most cite the lung and the breast as the primary sites. We should pay attention to ophthalmologic findings because lung cancer may metastasize to the choroid.