case_images: PMC9981263_01
case_images: Cerebrospinal fluid (CSF) The CSF was grossly thick.
case_images: gr1.jpg
case_images: PMC9981263_01_gr1.jpg
case_images: fig0005
case_images: Although the patient did not have rigidity of the neck, a cerebrospinal fluid (CSF) puncture was performed, and the CSF was grossly thick (Fig. 1).