%0 Journal Article %T When Ventricular Cerebrospinal Fluid Assessment Misleads: Basal Meningitis and the Importance of Lumbar Puncture Sampling %A Alan C Street %A Carly Hughes %A Ian Jennens %A Nicholas D P Hall %A Ouli Xie %A Sadid F Khan %A Siddhartha Mahanty %A Steven Y C Tong %A Thornton Macauley %J Archive of "Open Forum Infectious Diseases". %D 2019 %R 10.1093/ofid/ofz324 %X The diagnosis of central nervous system (CNS) infection relies upon analysis of cerebrospinal fluid (CSF). We present 4 cases of CNS infections associated with basal meningitis and hydrocephalus with normal ventricular CSF but grossly abnormal lumbar CSF. We discuss CSF ventricular¨Clumbar composition gradients and putative pathophysiological mechanisms and highlight clinical clues for clinicians %K cerebrospinal fluid %K cryptococcal meningitis %K lumbar puncture %K meningitis %K tuberculous meningitis %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6667712/