Dural tail sign in spinal meningiomas |
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| Institution: | 1. Department of Orthopaedic Surgery, St. Marianna University School of Medicine, Kawasaki, Japan;2. Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital, Sakura, Japan;3. Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan;4. Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara, Japan;5. Department of Orthopaedic Surgery, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Japan;6. Department of Orthopaedic Surgery, Konodai Hospital, National Center for Global Health and Medicine, Ichikawa, Japan;7. Department of Orthopaedic Surgery, Toho University Sakura Medical Center, Sakura, Japan;2. Mayo Clinic, Scottsdale, AZ;1. Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Radiology and Neuroradiology, Diagnostics For Images, Radiotherapy, Oncology and Hematology, Diagnostic Area for Images, Rome, Italy;2. Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Neurology−Polo Sciences of Aging, Neurological, Orthopedics and Head-Neck, Neuroscience Area, Rome, Italy;3. Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Child Neurosurgery−Pole Sciences of Aging, Neurological, Orthopedics and Head-Neck, Neuroscience Area, Rome, Italy;4. Institute of Neurosurgery, Catholic University of the Sacred Heart, Rome, Italy;5. Institute of Radiology, Catholic University of the Sacred Heart, Rome, Italy;6. Pediatric Neurosuergery, International Neuroscience Institute, Hannover, Germany;1. Royal Orthopaedic Hospital, The Woodlands, Bristol Road South, Birmingham, B31 2AP, UK;2. The Royal Orthopaedic Hospital NHS Foundation Trust, Birmingham, UK;3. Aston University Medical School, Aston Express Way, Birmingham, B4 7ET, UK;4. Orthopaedic Department University Hospital of Tours, 37044, Cedex 9 Tours, France;5. Life & Health Sciences at University of Aston, Aston Expressway, Birmingham, B4 7ET, UK |
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| Abstract: | ObjectiveTo study the association between the “dural tail sign” and spinal meningiomas on MR imaging.MethodsRetrospective review of MR examinations of all pathologically proven spinal meningiomas from 1998 to 2005 was performed. Lesions were evaluated for size, signal intensity, enhancement pattern, and presence or absence of dural tail. The dural tail length and direction in reference to the meningioma were also evaluated.ResultsSeven spinal meningiomas were identified in seven patients. One lesion was purely extradural, while the remaining were intradural extramedullary. Dural tail was present in four cases (57%) and its length ranged between 5 and 21 mm. The tail was seen cranial and caudal to the meningioma in three cases and only cranially in one. Coronal images were available in three cases and in two of these; the dural tail was clearly depicted.Conclusions“Dural tail sign” is as common in spinal meningiomas as in cranial meningiomas. |
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