45-year-old man with vertigo. 45才男性 めまい

45-year-old man with vertigo.
45才男性 めまい

解答:  Ecchordosis physaliphora   (EP)  ,  泡状外脊索腫

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Key words: Ecchordosisphysaliphora, EP,  泡状外脊索症,  異所性 脊索の遺残

Key images:

T2WI 3D axial 3

通常のT2WI だとわかりにくい 上記の様に3DT2WI (今回は内耳道撮像目的)でないと難しい

T2WI axialT2WI 3D axi reconstruction sagi, coro ADCT1WI T2WI MPR3T1WI T2WI MPRT1WI T2WI MPR2

References:

1)MehnertF, Beschorner, KukerW,et al.

Retroclivalecchordosisphysaliphora: MR imaging and review of the literature. AJNR. 2004, 25: 1851-1855

2)   ChiharaC, Korogi Y, Kakeda S, et al.

Ecchordosis physaliphora and its variants: proposed new classification based on high-resolution fast MR imaging employing steady-state acquisition. EurRadiol. 2013 Oct;23(10):2854-60.

3) Srinivasan A, Goyal M, KingstoneM.

Case 133:

Ecchordosis physaliphora. Radiology. 2008 May;247(2):585-8. No abstract available.

4) Golden LD, Small JE Benign notochordal lesions of the posterior clivus:      retrospective review of prevalence and imaging characteristics. J Neuroimaging.2014 May-Jun;24(3):245-9.

5) KaulS, Khan OH, Edem I, et al.

Transclivalpseudomeningocele secondary to ecchordosisphysaliphora: case report and literature review. J NeurolSurg Rep. 2013 Dec;74(2):92-5.

6)  KrishtKM, Palmer CA, Osborn AG, et al.

Giant ecchordosis physaliphora in an adolescent girl: case report. J NeurosurgPediatr. 2013 Oct;12(4):328-33. doi: 10.3171/2013.5.PEDS1395. Epub 2013 Aug 2.

7)Yamamoto T, Yano S, Hide T, et al.

A case of ecchordosis physaliphora presenting with an abducens nerve palsy: A rare symptomatic case managed with endoscopic endonasaltranssphenoidalsurgery. SurgNeurol Int. 2013;4:13.

8)AlkanO, Yildirim T, Kizilkiliç O, et al.

A case of ecchordosis physaliphora presenting with an intratumoral hemorrhage. Turk Neurosurg. 2009 Jul;19(3):293-6.

9)CiarpagliniR, Pasquini E, Mazzatenta D, et al.

Intraduralclivalchordoma and ecchordosis physaliphora: a challenging differential diagnosis: case report. Neurosurgery. 2009 Feb;64(2):E387-8; discussion E388.

10) Toda H, Kondo A, Iwasaki K.

Neuroradiologicalcharacteristics of ecchordosis physaliphora. Case report and review of the literature. J Neurosurg. 1998 Nov;89(5):830-4. Review.

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