Disseminated human subarachnoid coenurosis: computed tomographic appearance.

A single, fatal case of disseminated subarachnoid coenurosis in an infant is presented to illustrate the computed tomographic (CT) findings. The larval stage of Multiceps multiceps (dog tapeworm) is always confined to the cerebrospinal fluid (CSF) pathways where the cysts may be imaged with CT. Previous reports of this rare human infestation do not include high-resolution CT [1-5]. Standard CT of the brain, myelography, and thin-section CT after metrizamide injection into the CSF were performed in the case described. Pathologic material and a literature review are provided.