case_images: PMC10946061_01
case_images: MRI features. Axial FLAIR-weighted images at the level of the fourth ventricle (A) show discrete FLAIR-hyperintense signals around the fourth ventricle (arrows). On axial (B) and sagittal (C) post-contrast T1-weighted images of the fossa posterior, leptomeningeal contrast enhancement can be seen around the brainstem and in the walls of the fourth ventricle (arrows).
case_images: fpsyt-15-1276744-g001.jpg
case_images: PMC10946061_01_fpsyt-15-1276744-g001.jpg
case_images: f1
case_images: Contrast-enhanced magnetic resonance imaging (MRI) demonstrated infratentorial leptomeningeal enhancement, most notably around the brain stem and in the fourth ventricle walls ( Figure 1 ). This patient developed catatonia and delirium with persistent psychotic symptoms in the context of a urinary tract infection, bilateral pneumonia due to sarcoidosis and a probable diagnosis of neurosarcoidosis  Figure 1 .
case_images: Timeline of key events related to neurosarcoidosis.
case_images: fpsyt-15-1276744-g002.jpg
case_images: PMC10946061_01_fpsyt-15-1276744-g002.jpg
case_images: f2
case_images: As of today, 5 years after the initial presentation, the patient is in good health, with no reported neurological symptoms  Figure 2 .