Pure Intracavernous Sinus Epidermoid Cyst: Diffusion-Weighted (DW) and Constructive Interference in Steady State (CISS) Images

해면 정맥동 내에서 발생한 표피 낭종: 증례 보고 및 영상 소견

  • Park, Suk-Jin (Department of Radiology, Eulji University Hospital) ;
  • Yu, In-Kyu (Department of Radiology, Eulji University Hospital) ;
  • Kim, Min-Sun (Department of Radiology, Eulji University Hospital) ;
  • Yoo, Hyeon-Mi (Department of Radiology, Eulji University Hospital) ;
  • Kim, Seung-Min (Department of Neurosurgery, Eulji University Hospital) ;
  • Kim, Han-Kyu (Department of Neurosurgery, Eulji University Hospital)
  • 박숙진 (을지대학병원 영상의학과) ;
  • 유인규 (을지대학병원 영상의학과) ;
  • 김민선 (을지대학병원 영상의학과) ;
  • 유현미 (을지대학병원 영상의학과) ;
  • 김승민 (을지대학병원 신경외과) ;
  • 김한규 (을지대학병원 신경외과)
  • Received : 2010.01.26
  • Accepted : 2010.03.13
  • Published : 2010.07.01

Abstract

An epidermoid cyst located in the true intracavernous sinus is extremely rare. A 22-year-old man presented with right ophthalmoplegia that had developed 3 years previously. The computed tomography (CT) and magnetic resonance (MR) images demonstrated a mass in the right cavernous sinus. The mass was a non-enhancing cystic lesion with a focal high density portion seen on the CT scan. The lesion displayed a markedly hyperintense signal on the diffusion-weighted images (DWI) and a heterogeneously hyperintense signal on the constructive interference in the steady state (CISS) images, which was all consistent with an epidermoid cyst. On the operation field, the mass was noted to be a true intracavernous sinus lesion, and it was histopathologically confirmed to be an epidermoid cyst.

두개 내에서 공간 점유 병소로 발생하는 표피 낭종은 2% 이내로 드물게 보고되었다. 더욱이 순수하게 해면 정맥동 내에서 발생한 표피 낭종에 대한 보고는 매우 드물다. 우리는 22세 남자에서 병리적 진단을 통해 확진된 순수하게 해면 정맥동 내에서 발생한 표피 낭종의 조영 증강 전 CT 소견과 확산강조 (Diffusion weighted) 및 감약반전 회복 (FLAIR) 영상, 그리고 건설적 간섭 기법 (CISS)을 포함하는 MR 영상 소견에 대해 보고하고자 한다.

Keywords

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