Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Diagnosis of Spinal Arachnoid Cyst using Magnetic Resonance Imaging in a Dog

개에서 자기공명영상을 이용한 척추부 지주막 낭종의 진단

  • Shin, Chang-ho (Haeundae Animal Medical Center) ;
  • Kim, Young-ki (Haeundae Animal Medical Center) ;
  • Hwang, Tae-sung (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Yoon, Young-min (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Jung, Dong-in (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Yeon, Seong-chan (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Lee, Hee-chun (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
  • 신창호 (해운대 동물의료원) ;
  • 김영기 (해운대 동물의료원) ;
  • 황태성 (경상대학교 동물의학연구소) ;
  • 윤영민 (경상대학교 동물의학연구소) ;
  • 정동인 (경상대학교 동물의학연구소) ;
  • 연성찬 (경상대학교 동물의학연구소) ;
  • 이희천 (경상대학교 동물의학연구소)
  • Accepted : 2015.10.15
  • Published : 2015.10.30
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Abstract

A 6-year-old, intact male maltese was presented with hindlimb ataxia of 4 day duration. Physical and neurological examinations revealed a bright, alert, and responsive dog, with no evidence of cranial nerve deficits, conscious proprioceptive deficits. Spinal reflexes of the hind and forelimbs were normal. Patellar, cranial tibial, and withdrawal reflexes were normal. Pain could not be elicited on manipulation of the neck or palpation of the spinal column. Survey radiographs of the vertebral column were unremarkable. Computed tomography (CT) scans in the transverse plane were performed. The results of CT imaging were unremarkable. Magnetic resonance imaging (MRI) in both sagittal and transverse planes was performed. The extent of the lesion was 25 mm in length by 4 mm in thickness. The spinal cord was deviated ventrally and appreared thinner. On T1-weighted and FLAIR images, a discrete hypointense lesion dorsal to the spinal cord was observed at L1-2 which was contiguous with the subarachnoid space. On T2-weighted images, this region was hyperintense, consistent with a fluid-filled structure. The signal intensity of the cysts was equivalent to cerebrospinal fluid (CSF). Surgical treatment involving dorsal laminectomy had successful outcomes.

6살의 중성화한 수컷 말티즈는 운동실조로 인하여 내원하였다. 본 증례는 일반방사선 촬영, 컴퓨터단층촬영, 자기공명영상을 실시하여 낭종의 위치, 크기, 척수와의 관련성 및 동반된 질환을 알 수 있었다. 자기공명영상 결과 T1W과 FLAIR 영상에서는 hypointense한 영역, T2W 영상에서는 hyperintense한 영역이 L1~2 척수의 등쪽으로 나타났다. 이는 CSF와 동일한 신호로 나타났으며, 등쪽에서 척수를 압박하여 배쪽으로 이동시켰다. 낭종의 길이는 25 mm, 두께는 4 mm로 나타났다. 무증상일 경우는 치료가 필요 없으나, 본 증례는 신경학적 이상이 나타나 수술적 치료를 실시하였다.

Keywords

References

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