Abstract.
We report on an isolated enlargement of the fourth ventricle in a patient with neurosarcoidosis which developed 3 years after the insertion of a ventriculo-atrial shunt. Repeated MRI images were obtained in a patient with known neurosarcoidosis between 1995 and 2000. Imaging findings were correlated to the medical course of the patient, who developed a hydrocephalus and a trapped fourth ventricle consecutively. The isolation was presumably due to granulomatous inflammation of the ependyma surrounding the fourth ventricular outlets. The isolated fourth ventricle was responsible for a deterioration of neurological status. Neurosarcoidosis is a severe complication in sarcoidosis patients. An isolated enlargement of the fourth ventricle is a rare complication in clinically deteriorated patients with neurosarcoidosis and ventricular drainage, which may require neurosurgical treatment.
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Hesselmann, V., Wedekind, C., Terstegge, K. et al. An isolated fourth ventricle in neurosarcoidosis: MRI findings. Eur Radiol 12 (Suppl 3), S1–S3 (2002). https://doi.org/10.1007/s00330-002-1369-3
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DOI: https://doi.org/10.1007/s00330-002-1369-3