Fourth ventricle tumor differential diagnosis

see also Posterior fossa tumor differential diagnosis

Fourth ventricle tumor are more frequent in the pediatric population and the most common are medulloblastoma, and Fourth ventricle ependymoma; in adults, the most frequent are Fourth ventricle hemangioblastoma, Fourth ventricle subependymoma. Many of these lesions have a similar pattern in terms of density or intensity and enhancement, therefore, one should try to obtain a differential diagnosis as accurately as possible, using clinical and demographic data and imaging findings.

Sandberg DI, Souweidane MM. Hemifacial spasm caused by a pilocytic astrocytoma of the fourth ventricle. Pediatr Neurol. 1999 Oct;21(4):754-6. doi: 10.1016/s0887-8994(99)00077-6. PMID: 10580892.

Fourth ventricle lymphoma should be listed in the differential diagnosis of fourth ventricle tumors with well-circumscribed margins and homogenous contrast enhancement 1) 2) 3).

Liao CH, Lin SC, Hung SC, Hsu SP, Ho DM, Shih YH. Primary large B-cell lymphoma of the fourth ventricle. J Clin Neurosci. 2014 Jan;21(1):180-3. doi: 10.1016/j.jocn.2013.02.036. Epub 2013 Sep 5. PubMed PMID: 24012385.
Hill CS, Khan AF, Bloom S, McCartney S, Choi D. A rare case of vomiting: fourth ventricular B-cell lymphoma. J Neurooncol. 2009 Jun;93(2):261-2. doi: 10.1007/s11060-008-9765-4. Epub 2008 Dec 18. PubMed PMID: 19093074.
Haegelen C, Riffaud L, Bernard M, Morandi X. Primary isolated lymphoma of the fourth ventricle: case report. J Neurooncol. 2001 Jan;51(2):129-31. PubMed PMID: 11386409.
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