Mystery Case: Scalpel sign: Dorsal thoracic arachnoid web.
نویسندگان
چکیده
A 44-year-old man presented with 1 year of gradually progressive lower limb weakness and numbness and bowel and bladder incontinence. Neurologic examination revealed a T8 spinal sensory level and spastic paraparesis. Preoperative imaging (figure) of the thoracic spine revealed the scalpel sign, a radiologic entity diagnostic of a dorsal thoracic arachnoid web. The lesion was surgically and histologically confirmed as an arachnoid web. Clinical deficits and the cord signal abnormality resolved postoperatively. Arachnoid webs are bands of arachnoid tissue extending to the pial surface, causing focal dorsal indentation of the thoracic cord. Early identification followed by surgery appears to result in good functional recovery.
منابع مشابه
Dorsal Arachnoid Web and Scalpel Sign: A Diagnostic Imaging Entity.
MATERIAL AND METHODS A case of 60-year-old woman with idiopathic syringomyelia and progressive myelopathy by dorsal arachnoid web is discussed. One focal indentation along the dorsal surface of the spinal cord at the T3 vertebral body level revealed the scalpel sign, a radiologic entity diagnostic of a dorsal thoracic arachnoid web. RESULTS T2-T3 laminectomy for the resection of dorsal arachn...
متن کاملDorsal thoracic arachnoid web and the "scalpel sign": a distinct clinical-radiologic entity.
Arachnoid webs are intradural extramedullary bands of arachnoid tissue that can extend to the pial surface of the spinal cord, causing a focal dorsal indentation of the cord. These webs tend to occur in the upper thoracic spine and may produce a characteristic deformity of the cord that we term the "scalpel sign." We describe 14 patients whose imaging studies demonstrated the scalpel sign. Ten ...
متن کاملPosterior spinal cord herniation into an extradural thoracic arachnoid cyst: surgical treatment. Case report and review of the literature.
The authors describe the case of a 2-year-old boy who experienced progressive spastic paraparesis for several months. Magnetic resonance imaging revealed an extensive extradural arachnoid cyst at the T3-L1 levels and posterior spinal cord herniation at T3-4. Surgical release of the neck of the hernia and total resection of the arachnoid cyst were performed. The patient had good clinical recover...
متن کاملAn Overview of Arachnoid Webs
Arachnoid webs are abnormal formations of arachnoid membrane in the spinal subarachnoid space that prevents movement of cerebrospinal fluid (CSF) in the longitudinal direction1.These webs represent intradural extramedullary transverse bands of arachnoid tissue that extend to the dorsal surface of the spinal cord resulting in dorsal indentation2. These arachnoid webs may represent a variant of a...
متن کاملMystery case: giant cervico-thoraco-lumbar intraspinal arachnoid cyst.
A 23-year-old woman presented with a 3-month history of increasing weakness and numbness of bilateral legs and dysuria. MRI demonstrated an extensive spinal dorsal cystic lesion from C7 to L2 (figure, A and B). The patient underwent a T9-11 laminectomy, and a cyst-peritoneal shunt was performed using a catheter. Pathology confirmed a diagnosis of arachnoid cyst (figure, C). The cyst reduced in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Neurology
دوره 85 21 شماره
صفحات -
تاریخ انتشار 2015