====== 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.

===== Medulloblastoma =====

see [[Medulloblastoma diagnosis]].

===== Fourth ventricle ependymoma =====

[[Fourth ventricle ependymoma diagnosis]].

===== Fourth ventricle subependymoma =====

[[Fourth ventricle subependymoma]].
===== Fourth ventricle hemangioblastoma =====

[[Fourth ventricle hemangioblastoma]]

===== Fourth ventricle choroid plexus papilloma =====

[[Fourth ventricle choroid plexus papilloma]].

===== Fourth ventricle meningioma =====

[[Fourth ventricle meningioma]].

===== Fourth ventricle cysticercosis =====
[[Fourth ventricle cysticercosis]]

===== Fourth ventricle pilocytic astrocytoma =====

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 =====

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