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  • Title: [MR imaging of compressive cervical myelopathy after surgery--high signal intensity of the spinal cord on T2 weighted images].
    Author: Mimura F, Fujiwara K, Otake S, Miki Y, Kawakami K, Kuwata Y, Takada I, Masada T, Koyama M, Miyamato S.
    Journal: Nihon Igaku Hoshasen Gakkai Zasshi; 1990 Jun 25; 50(6):567-76. PubMed ID: 2235307.
    Abstract:
    We reviewed the MR images of 32 patients with cervical myelopathy, showing lesions of high signal intensity in the spinal cord on the sagittal T2 weighted images (T2WI) after surgery: 16 with OPLL; 9 with spondylosis; 4 with disc herniation and 3 with trauma. All images were obtained on a superconducting 1.5 Tesla system. The lesions were classified into five groups, according to the shape and grade of signal intensity on the sagittal T2WI: (I) oval-shaped lesion of signal intensity less brighter than CSF with blurred margin, (II) longitudinal linear-shaped lesion of signal intensity similar to CSF, (III) spindle-shaped lesion of signal intensity similar to CSF, (IV) round-shaped lesion of signal intensity similar to CSF and (V) mixed-types lesions which consisted of group I and II. The present study was summarized as follows: 1) Oval-shaped lesions were seen in the cases of disc herniation and spondylosis with relatively short duration of the symptom, presumptively with relatively short duration of the symptom, presumptively indicative of edema. 2) Most cases of OPLL and spondylosis showed linear-shaped lesions, suggesting necrosis and/or cavitations of the central gray matter. 3) One case of spondylosis developed a spindle-shaped lesion, implicating syringomyelia. 4) Round-shaped lesions were seen in the cases of spinal trauma, suggesting posttraumatic cyst. 5) In a case of mixed-typed lesion examined pre- and postoperatively, only an oval-shaped lesion decreased in size after surgery.
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