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Intramedullary Spinal Lesions Involving the Conus Medullaris: MR Imaging Features for Differential Diagnosis

Other Titles
 척수 원추부에 발생한 척수내 병변: 자기공명영상을 이용한 감별 진단 
 은나래  ;  안성준  ;  정태섭  ;  조용은  ;  김근수  ;  구성욱  ;  서상현 
 Journal of the Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회지), Vol.18(2) : 144-150, 2014 
Journal Title
Journal of the Korean Society of Magnetic Resonance in Medicine(대한자기공명의과학회지)
Issue Date
Conus medullaris ; Intramedullary lesion ; Spinal arteriovenous fistula ; Ventriculus terminalis ; Hemangioblastoma ; Dermoid cyst ; Ependymoma
Purpose : Intramedullary spinal lesions in the conus medullaris (CM), including tumors and vascular lesion, are rarely reported. We reported various MR features of intramedullary spinal cord lesions involving the CM including ependymoma, hemangioblastomas, dermoid cyst, ventriculus terminalis and spinal AVF and tried to discuss them for differential diagnosis. Materials and Methods: Six patients (male: female = 4:2, mean age = 44.3 year old) were enrolled from the clinical database of our institute from 2004 to 2010 and their radiological images and clinical symptoms were reviewed retrospectively. All patients had taken initial and postoperative MRI with contrast enhancement using gadopentate dimeglumine (Gd-DTPA). These images were analyzed by tumor size, location, signal intensity relative to the spinal cord, vascular flow voids, syrinx or cyst, edema and enhancement pattern. Results: Contrast enhancement was seen in all intramedullary masses. An eccentric enhancing nodule was noted in two hemangioblastomas and unusual peripheral rim enhancement with septation was seen in ventriculus terminalis. Patchy enhancement of the CM was observed in spinal arteriovenous fistula (AVF). Extensive cord edema adjacent to the intramedullary lesions was seen in four cases and syrinx was noted in three cases. Vascular signal voids were found in two hemangioblastomas and one spinal AVF. Conclusion: In evaluation of intramedullary spinal lesions in the CM, it is necessary to consider these unusual MR findings and discriminate various pathologies with prudence and caution.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kuh, Sung Uk(구성욱) ORCID logo https://orcid.org/0000-0003-2566-3209
Kim, Keun Su(김근수) ORCID logo https://orcid.org/0000-0002-3384-5638
Suh, Sang Hyun(서상현) ORCID logo https://orcid.org/0000-0002-7098-4901
Ahn, Sung Jun(안성준) ORCID logo https://orcid.org/0000-0003-0075-2432
Eun, Na Lae(은나래) ORCID logo https://orcid.org/0000-0002-7299-3051
Chung, Tae Sub(정태섭)
Cho, Yong Eun(조용은) ORCID logo https://orcid.org/0000-0001-9815-2720
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