Deafness and blindness as a presentation of colorectal meningeal carcinomatosis.

Multiple cranial nerve palsies often reveal a meningeal process that may be infectious, inflammatory, or neoplastic in origin. Even when there is a known history of malignancy, the rarity with which a given primary cancer causes meningeal carcinomatosis can influence diagnostic decision making and lead to delays in diagnosis. We present a unique case of a patient with deafness and blindness secondary to carcinomatous meningitis from colorectal adenocarcinoma.