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항-NMDA 수용체 항체와 관련된 뇌염에서 단독 연수막 조영증강: 조영증강 유체감쇠반전회복기법 영상의 진단적 가치

Isolated Leptomeningeal Enhancement in Anti-N-Methyl D-Aspartate Receptor Encephalitis: The Diagnostic Value of Contrast-Enhanced Fluid-Attenuated Inversion Recovery Imaging

  • 박준경 (동국대학교 일산병원 영상의학과) ;
  • 이은자 (동국대학교 일산병원 영상의학과) ;
  • 김광기 (동국대학교 일산병원 신경과)
  • Jun Kyeong Park (Department of Radiology, Dongguk University Ilsan Hospital) ;
  • Eun Ja Lee (Department of Radiology, Dongguk University Ilsan Hospital) ;
  • Kwang Ki Kim (Department of Neurology, Dongguk University Ilsan Hospital)
  • 투고 : 2021.05.25
  • 심사 : 2021.08.24
  • 발행 : 2022.07.01

초록

항-N-메틸 D-아스파르테이트 수용체(anti-N-methyl-D-aspartate receptor; 이하 항-NMDAR) 뇌염은 중증이지만 치료가 가능한 흔한 자가면역뇌염이다. 항-NMDAR 뇌염 환자는 종종 망상, 환각 및 편집증과 같은 정신병적 증상뿐만 아니라 기억력 손상 및 지속적인 주의력 상실과 같은 증상을 호소한다. 항-NMDAR 뇌염 환자의 자기공명영상 소견은 대부분의 경우에서 이상 소견을 보이지 않으나, 이상 소견이 보이는 경우에는 뇌 실질의 T2 고강도 병변과 이와 인접한 연수막에 조영증강이 있는 것으로 알려져 있다. 그러나 항-NMDAR 뇌염에서 단독 연수막 조영증강은 드물게 보고되어 있다. 우리는 항-NMDAR 뇌염에서 단독 연수막 조영증강을 보인 환자의 증례 보고와 함께 조영증강 유체감쇠반전회복기법 영상의 진단 가치를 보여주고자 한다.

Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a common autoimmune encephalitis that is noted to be a severe but treatable disease entity. Patients with anti-NMDAR encephalitis often develop psychotic symptoms, including delusions, hallucinations, and paranoia, as well as memory impairment and persistent loss of attention. However, MRI findings in such patients show no abnormalities in most cases. Although typical brain abnormality features, known as T2 hyperintensities, involve the brain parenchyma and contrast enhancement at the cerebral cortex or overlying meninges, isolated leptomeningeal enhancement has been rarely reported in anti-NMDAR encephalitis. Herein, we report a patient with anti-NMDAR encephalitis who presented with isolated leptomeningeal enhancement, additionally showing the diagnostic value of contrast-enhanced fluid-attenuated inversion recovery imaging.

키워드

참고문헌

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