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

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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.

元の言語英語
ページ(範囲)1033.e11-1033.e14
ジャーナルWorld Neurosurgery
105
DOI
出版物ステータス出版済み - 9 2017

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Epidermal Cyst
Differential Diagnosis
Arachnoid Cysts
Chordoma
Dermoid Cyst
Chondrosarcoma
Neural Tube Defects
Paresthesia
Magnetic Resonance Imaging
Brain

All Science Journal Classification (ASJC) codes

  • Surgery
  • Clinical Neurology

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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",
year = "2017",
month = "9",
doi = "10.1016/j.wneu.2017.06.003",
language = "English",
volume = "105",
pages = "1033.e11--1033.e14",
journal = "World Neurosurgery",
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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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