The choroid--an unusual site for metastasis in patients with adenocarcinoma of the rectum--a case report.

Metastatic carcinoma is the commonest malignant tumour of the eye and usually presents with a disturbance of vision. A rare case of choroidal metastasis secondary to adenocarcinoma of the rectum is reported to emphasize the need to investigate visual symptoms in patients with known or suspected malignant disease.