choroid glomus choroid glomus the choroid glomus or glomus choroideum, is an enlargement of the choroid plexus located in the atrium of each lateral ventricle. they are commonly calcified in adults and can easily be seen as a bright tufts on ct imaging. their main purpose is for the secretion of cerebrospinal fluid (csf). choroid glomusdetailsidentifierslatinglomus choroideumta98a14.1.09.283 a14.1.01.308ta25655anatomical terminology