Abstract
We report a case of choroidal metastasis from rectal cancer manifesting visual loss as the initial recurrence symptom. A 49-year-old man with progressive vision loss in the left eye referred 15 months after radical rectal cancer surgery was found in funduscopy to have a choroidal tumor with exudative detached retinas and in chest computed tomography (CT) to have small multiple tumors with central cavitations in both lungs. Transbronchial lung biopsy showed adenocarcinoma cells. We diagnosed left choroidal metastasis and multiple lung rectal cancer metastases. Systemic chemotherapy, improved exudative detached retinas and retinochoroidal effusion and the choroidal tumor became smaller and flatten, vision was permanently lost. Lung metastases gradually worsened and the cervical vertebra metastasis appeared. The man died 11 months after the first manifestation of recurrence. Nine cases of choroidal metastasis from colorectal cancer, including our case, have been reported. Because most had multiple organ metastases involving the liver and lung, choroidal metastasis is suspected to be derived secondarily from liver or lung metastases.
