The clinical features and MRI characteristics of idiopathic acute transverse myelitis
QIN Dongxue;YI Mei;YANG Chao;TIAN Juan;SHA Lin;Department of Radiology,the Second Hospital of Dalian Medical University;
Objective To investigate the clinical features and MRI characteristics of idiopathic acute transverse myelitis(IATM)in order to improve its diagnostic accuracy.Methods Retrospective analysis was performed on the clinical data and MRI images of 41 IATM patients who were diagnosed and treated at initial presentation in our hospital.Results(1)Clinical symptoms-28 cases(68.29%)showed numbness and weakness of limbs,12 cases(29.27%)showed paraplegia,25 cases(60.98%)showed urination and defecation disorders.All the patients had sensory disturbance under clear sensory plane.39 cases(95.12%)were hypalgesia,2 cases(4.88%)were hyperalgesia.(2)MRI characteristics-38(92.68%)patients showed high signal intensity on T2WI images,including 11 with lesions(28.95%)located in the cervical spinal cord,22 with lesions(57.89%)in thoracic spinal cord,1 with lesion(2.63%)in cervical and thoracic spinal cord,and 4 with lesions(10.53%)in thoracic spinal cord and cauda equine;spinal cord swelling was found in 11 cases(28.95%).Contrast-enhanced scan was performed to 21 patients,13 of whom(61.90%)had enhancement.Conclusion Numbness and weakness of limbs and hypalgesia under clear sensory levels are the main clinical manifestations of IATM.The combination of clinical features and MRI characteristics is helpful for the diagnosis of IATM.
【CateGory Index】： R445.2;R744.3