A Case of Ecchordosis Physaliphora in the Prepontine Cistern: A Rare Entity in the Differential Diagnosis of an Epidermoid Cyst

Kenji Miki; Koji Yoshimoto; Ataru Nishimura; Satoshi O. Suzuki; Akio Hiwatashi; Koji Iihara

doi:10.1016/j.wneu.2017.06.003

A Case of Ecchordosis Physaliphora in the Prepontine Cistern: A Rare Entity in the Differential Diagnosis of an Epidermoid Cyst

Kenji Miki, Koji Yoshimoto, Ataru Nishimura, Satoshi O. Suzuki, Akio Hiwatashi, Koji Iihara

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Background Ecchordosis physaliphora (EP) is a benign notochordal remnant that is usually asymptomatic. We report a case of a symptomatic large EP mimicking an epidermoid cyst. Case Description A 44-year-old woman presented with right facial dysesthesia. Brain magnetic resonance imaging showed a mass with a diameter of 3.2 cm that was hypointense on T1-weighted imaging, hyperintense on T2-weighted imaging, isointense to hyperintense on diffusion-weighted imaging, and hyperintense on apparent diffusion coefficient map (1.2–1.6 × 10⁻³ mm²/second). There was no apparent contrast enhancement. Differential diagnoses included epidermoid cyst, dermoid cyst, EP, chordoma, chondrosarcoma, neurenteric cyst, and arachnoid cyst. Clinicopathologic examination revealed that the mass was an EP. Conclusions EP in the prepontine cistern should be considered in the differential diagnosis of epidermoid cyst.

Original language	English
Pages (from-to)	1033.e11-1033.e14
Journal	World Neurosurgery
Volume	105
DOIs	https://doi.org/10.1016/j.wneu.2017.06.003
Publication status	Published - Sept 2017

All Science Journal Classification (ASJC) codes

Surgery
Clinical Neurology

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10.1016/j.wneu.2017.06.003

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@article{089801f297194b9b9b8a3a0d2b2dfd70,

title = "A Case of Ecchordosis Physaliphora in the Prepontine Cistern: A Rare Entity in the Differential Diagnosis of an Epidermoid Cyst",

abstract = "Background Ecchordosis physaliphora (EP) is a benign notochordal remnant that is usually asymptomatic. We report a case of a symptomatic large EP mimicking an epidermoid cyst. Case Description A 44-year-old woman presented with right facial dysesthesia. Brain magnetic resonance imaging showed a mass with a diameter of 3.2 cm that was hypointense on T1-weighted imaging, hyperintense on T2-weighted imaging, isointense to hyperintense on diffusion-weighted imaging, and hyperintense on apparent diffusion coefficient map (1.2–1.6 × 10−3 mm2/second). There was no apparent contrast enhancement. Differential diagnoses included epidermoid cyst, dermoid cyst, EP, chordoma, chondrosarcoma, neurenteric cyst, and arachnoid cyst. Clinicopathologic examination revealed that the mass was an EP. Conclusions EP in the prepontine cistern should be considered in the differential diagnosis of epidermoid cyst.",

author = "Kenji Miki and Koji Yoshimoto and Ataru Nishimura and Suzuki, {Satoshi O.} and Akio Hiwatashi and Koji Iihara",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Inc.",

year = "2017",

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doi = "10.1016/j.wneu.2017.06.003",

language = "English",

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T1 - A Case of Ecchordosis Physaliphora in the Prepontine Cistern

T2 - A Rare Entity in the Differential Diagnosis of an Epidermoid Cyst

AU - Miki, Kenji

AU - Yoshimoto, Koji

AU - Nishimura, Ataru

AU - Suzuki, Satoshi O.

AU - Hiwatashi, Akio

AU - Iihara, Koji

PY - 2017/9

Y1 - 2017/9

N2 - Background Ecchordosis physaliphora (EP) is a benign notochordal remnant that is usually asymptomatic. We report a case of a symptomatic large EP mimicking an epidermoid cyst. Case Description A 44-year-old woman presented with right facial dysesthesia. Brain magnetic resonance imaging showed a mass with a diameter of 3.2 cm that was hypointense on T1-weighted imaging, hyperintense on T2-weighted imaging, isointense to hyperintense on diffusion-weighted imaging, and hyperintense on apparent diffusion coefficient map (1.2–1.6 × 10−3 mm2/second). There was no apparent contrast enhancement. Differential diagnoses included epidermoid cyst, dermoid cyst, EP, chordoma, chondrosarcoma, neurenteric cyst, and arachnoid cyst. Clinicopathologic examination revealed that the mass was an EP. Conclusions EP in the prepontine cistern should be considered in the differential diagnosis of epidermoid cyst.

AB - Background Ecchordosis physaliphora (EP) is a benign notochordal remnant that is usually asymptomatic. We report a case of a symptomatic large EP mimicking an epidermoid cyst. Case Description A 44-year-old woman presented with right facial dysesthesia. Brain magnetic resonance imaging showed a mass with a diameter of 3.2 cm that was hypointense on T1-weighted imaging, hyperintense on T2-weighted imaging, isointense to hyperintense on diffusion-weighted imaging, and hyperintense on apparent diffusion coefficient map (1.2–1.6 × 10−3 mm2/second). There was no apparent contrast enhancement. Differential diagnoses included epidermoid cyst, dermoid cyst, EP, chordoma, chondrosarcoma, neurenteric cyst, and arachnoid cyst. Clinicopathologic examination revealed that the mass was an EP. Conclusions EP in the prepontine cistern should be considered in the differential diagnosis of epidermoid cyst.

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A Case of Ecchordosis Physaliphora in the Prepontine Cistern: A Rare Entity in the Differential Diagnosis of an Epidermoid Cyst

Abstract

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