====== Falx meningioma differential diagnosis ======

There are several tumors that grow near the [[falx]] and may mimic the falcine meningiomas. [[Osteochondroma]]s, [[chondrosarcoma]]s, [[solitary fibrous tumor]] of the meninges, [[epidermoid]] tumors and [[intracranial metastases]] are the most frequent.

Although rare, marginal zone B-cell lymphoma must be considered in the differential diagnosis of an extra-axial enhancing mass
((Douleh DG, Morone PJ, Forbes JA, Thompson RC. Intracranial Marginal Zone
B-Cell Lymphoma Mimicking Meningioma. World Neurosurg. 2016 May 4. pii:
S1878-8750(16)30235-2. doi: 10.1016/j.wneu.2016.04.106. [Epub ahead of print]
PubMed PMID: 27155383.
)).
----
A 43-year-old man arrived at the emergency department following a syncopal episode. Computed tomography and magnetic resonance images demonstrated a small interhemispheric, anterior parafalcine mass that mimicked a meningioma. Surgical excision and subsequent pathologic evaluation revealed an [[angioleiomyoma]] and the patient recovered without incident
((Calle S, Louis D, Westmark R, Westmark K. Angioleiomyoma of the falx. J Radiol
Case Rep. 2016 Apr 30;10(4):8-15. doi: 10.3941/jrcr.v10i4.2713. eCollection 2016 
Apr. PubMed PMID: 27200167; PubMed Central PMCID: PMC4861627.
)).
----
see [[Granulocytic sarcoma]].
----
Lee et al. presented a case of PIFs mimicking a [[falx meningioma]] in a 17-year-old man
((Lee JG, Song SW, Koh YC, Cho J, Choi JW, Roh HG, Lim SD. Primary intracranial 
fibrosarcoma presenting with hemorrhage. Brain Tumor Res Treat. 2013
Oct;1(2):91-4. doi: 10.14791/btrt.2013.1.2.91. Epub 2013 Oct 31. PubMed PMID:
24904898; PubMed Central PMCID: PMC4027100.
)).

===== References =====