Neurocytoma of the cauda equina

1999 ◽  
Vol 90 (2) ◽  
pp. 247-251 ◽  
Author(s):  
Christina L. Stephan ◽  
John J. Kepes ◽  
Paul Arnold ◽  
K. Douglas Green ◽  
Fran Chamberlin
Keyword(s):  
Magnetic Resonance ◽  
Nerve Root ◽  
Magnetic Resonance Image ◽  
Cauda Equina ◽  
Pertinent Literature ◽  
Lower Extremity Weakness ◽  
Content Type ◽  
Left Lower Extremity ◽  
History Of ◽  
Fine Print

✓ A case of a neurocytoma involving a nerve root of the cauda equina in a 46-year-old woman is reported. The patient presented with a 2-month history of progressive left lower-extremity weakness and pain and decreased ability to walk, as well as complaints of incomplete voiding. A magnetic resonance image revealed a 7-mm oval mass that was located intrathecally and extended from T-12 to L-1 and was adjacent to a nerve root. No lesions were identified at higher vertebral levels. The mass was excised. On histological examination it was found to have classical features of a neurocytoma. To the best of the authors' knowledge, this is the first report of a neurocytoma occurring in that region. A detailed histological description of this case and review of the pertinent literature are provided.

Craniopharyngioma arising de novo in middle age

1997 ◽  
Vol 86 (6) ◽  
pp. 1046-1048 ◽  
Author(s):  
Marc S. Arginteanu ◽  
Karin Hague ◽  
Robert Zimmerman ◽  
Mark J. Kupersmith ◽  
John H. Shaiu ◽  
...  
Keyword(s):  
Magnetic Resonance Image ◽  
De Novo ◽  
Middle Age ◽  
Benign Tumors ◽  
Fetal Life ◽  
Content Type ◽  
Steady Growth ◽  
History Of ◽  
Sixth Decade ◽  
Fine Print

✓ The authors report the case of a 55-year-old woman who developed a symptomatic craniopharyngioma within 2 years of obtaining a normal magnetic resonance image of her brain. Craniopharyngiomas are histologically benign tumors. They are thought to arise from embryonic remnants of Rathke's pouch and sac and to manifest themselves clinically after a steady growth that commences in fetal life. To the authors' knowlege, this is the first report that documents a tumor arising de novo in the sixth decade of life. This report appears to challenge the concept of the origin and natural history of craniopharyngiomas.

Detailed anatomy of the intracranial segment of the hypoglossal nerve: neurovascular relationships and landmarks on magnetic resonance imaging sequences

2002 ◽  
Vol 96 (6) ◽  
pp. 1113-1122 ◽  
Author(s):  
Indra Yousry ◽  
Bernhard Moriggl ◽  
Urs D. Schmid ◽  
Martin Wiesman ◽  
Gunther Fesl ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Nerve Root ◽  
Cranial Nerve ◽  
Hypoglossal Nerve ◽  
Posterior Inferior Cerebellar Artery ◽  
Content Type ◽  
Contrast Enhanced ◽  
Ciss Sequence ◽  
12Th Cranial Nerve ◽  
Fine Print

Object. The thin hypoglossal nerve can be very difficult to distinguish on magnetic resonance (MR) images. The authors used a combination of sequences to increase the reliability of MR imaging in its demonstration of the 12th cranial nerve as well as to assess the course of the nerve, display its relationships to adjacent vessels, and provide landmarks for evaluating the nerve in daily practice. Methods. The study group consisted of 34 volunteers (68 nerves) in whom a three-dimensional (3D) Fourier-transformation constructive interference in steady-state (CISS) sequence and a 3D T1-weighted contrast-enhanced magnetization-prepared rapid-acquisition gradient-echo (MPRAGE) sequence were applied. Two trained neuroradiologists collaboratively identified the hypoglossal trigone, preolivary sulcus, 12th cranial nerve, posterior inferior cerebellar artery, vertebral artery, 12th nerve root sleeve, and the hypoglossal canal on each side. The 3D CISS sequence successfully demonstrated the hypoglossal trigone (100% of images), 12th nerve root bundles (100% of images), and 12th nerve sleeves (88.2% of images). The canalicular segment was exhibited with the aid of plain 3D CISS sequences in 74% of images and by using contrast-enhanced 3D CISS sequences and contrast-enhanced MPRAGE sequences in 100% of images. The landmarks that proved useful to identify the cisternal segment of the 12th cranial nerve included the hypoglossal trigone, preolivary sulcus, and 12th nerve root sleeve. Neurovascular contact was identified in 61% of root bundles. The roots were distorted in 44% of these contacts. Conclusions. The contrast-enhanced 3D CISS sequence consistently displayed the cisternal segment as well as the canalicular segments of the hypoglossal nerve and is, therefore, the best sequence to visualize the complete cranial course of this nerve. Landmarks such as the 12th nerve sleeves can assist in the identification of this nerve.

Spinal meningioma arising from a lumbar nerve root

1989 ◽  
Vol 70 (4) ◽  
pp. 646-648 ◽  
Author(s):  
Thomas H. K. Ng ◽  
Kwan Hon Chan ◽  
Kirpal S. Mann ◽  
Ching F. Fung
Keyword(s):  
Nerve Root ◽  
Cauda Equina ◽  
Spinal Meningioma ◽  
Content Type ◽  
Cauda Equina Compression ◽  
Lumbar Nerve Root ◽  
Fine Print

✓ A case is reported of cauda equina compression from an intradural meningioma arising from the L-5 nerve root in a young man.

Spinal arterial malformation in a child with hereditary hemorrhagic telangiectasia

1976 ◽  
Vol 44 (5) ◽  
pp. 613-616 ◽  
Author(s):  
Glen S. Merry ◽  
D. Barry Appleton
Keyword(s):  
Spinal Cord ◽  
Family History ◽  
Hereditary Hemorrhagic Telangiectasia ◽  
Cauda Equina ◽  
Content Type ◽  
Cauda Equina Compression ◽  
History Of ◽  
Spinal Aneurysm ◽  
Arterial Malformation ◽  
Fine Print

✓ A case is reported of spinal aneurysm in a child with a family history of hereditary hemorrhagic telangiectasia causing spinal cord and cauda equina compression. The operative approach is discussed.

Sciatica of nondisc origin and piriformis syndrome: diagnosis by magnetic resonance neurography and interventional magnetic resonance imaging with outcome study of resulting treatment

2005 ◽  
Vol 2 (2) ◽  
pp. 99-115 ◽  
Author(s):  
Aaron G. Filler ◽  
Jodean Haynes ◽  
Sheldon E. Jordan ◽  
Joshua Prager ◽  
J. Pablo Villablanca ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Mr Imaging ◽  
Nerve Root ◽  
Piriformis Syndrome ◽  
Piriformis Muscle ◽  
Mr Neurography ◽  
Content Type ◽  
Interventional Mr ◽  
Interventional Mr Imaging ◽  
Fine Print

Object. Because lumbar magnetic resonance (MR) imaging fails to identify a treatable cause of chronic sciatica in nearly 1 million patients annually, the authors conducted MR neurography and interventional MR imaging in 239 consecutive patients with sciatica in whom standard diagnosis and treatment failed to effect improvement. Methods. After performing MR neurography and interventional MR imaging, the final rediagnoses included the following: piriformis syndrome (67.8%), distal foraminal nerve root entrapment (6%), ischial tunnel syndrome (4.7%), discogenic pain with referred leg pain (3.4%), pudendal nerve entrapment with referred pain (3%), distal sciatic entrapment (2.1%), sciatic tumor (1.7%), lumbosacral plexus entrapment (1.3%), unappreciated lateral disc herniation (1.3%), nerve root injury due to spinal surgery (1.3%), inadequate spinal nerve root decompression (0.8%), lumbar stenosis (0.8%), sacroiliac joint inflammation (0.8%), lumbosacral plexus tumor (0.4%), sacral fracture (0.4%), and no diagnosis (4.2%). Open MR—guided Marcaine injection into the piriformis muscle produced the following results: no response (15.7%), relief of greater than 8 months (14.9%), relief lasting 2 to 4 months with continuing relief after second injection (7.5%), relief for 2 to 4 months with subsequent recurrence (36.6%), and relief for 1 to 14 days with full recurrence (25.4%). Piriformis surgery (62 operations; 3-cm incision, transgluteal approach, 55% outpatient; 40% with local or epidural anesthesia) resulted in excellent outcome in 58.5%, good outcome in 22.6%, limited benefit in 13.2%, no benefit in 3.8%, and worsened symptoms in 1.9%. Conclusions. This Class A quality evaluation of MR neurography's diagnostic efficacy revealed that piriformis muscle asymmetry and sciatic nerve hyperintensity at the sciatic notch exhibited a 93% specificity and 64% sensitivity in distinguishing patients with piriformis syndrome from those without who had similar symptoms (p < 0.01). Evaluation of the nerve beyond the proximal foramen provided eight additional diagnostic categories affecting 96% of these patients. More than 80% of the population good or excellent functional outcome was achieved.

Conus medulla—cauda compression from nerve root hypertrophy in a child with Dejerine—Sottas syndrome: improvement with laminectomy and duraplasty

2002 ◽  
Vol 97 (2) ◽  
pp. 244-247 ◽  
Author(s):  
Kleopas A. Kleopa ◽  
Leslie N. Sutton ◽  
Joseph Ong ◽  
Gihan Tennekoon ◽  
Albert E. Telfeian
Keyword(s):  
Magnetic Resonance Imaging ◽  
Nerve Root ◽  
Cauda Equina ◽  
Conus Medullaris ◽  
Myelin Protein Zero ◽  
Resonance Imaging ◽  
Content Type ◽  
Leg Weakness ◽  
Protein Zero ◽  
Fine Print

✓ This 7-year-old boy with Dejerine—Sottas syndrome caused by a mutation in the myelin protein zero gene began to suffer rapid deterioration with increasing leg weakness, loss of the ability to ambulate, and bowel and bladder incontinence. Magnetic resonance imaging of the spine revealed nerve root hypertrophy resulting in compression of the conus medullaris and cauda equina. Decompressive surgery was successful in reversing some of his deficits.

Intradural neurotropic spread of malignant mesothelioma

1998 ◽  
Vol 88 (1) ◽  
pp. 122-125 ◽  
Author(s):  
Timothy R. Steel ◽  
James Allibone ◽  
Tamas Revesz ◽  
Corrado D'Arrigo ◽  
H. Alan Crockard
Keyword(s):  
Spinal Cord ◽  
Brachial Plexus ◽  
Malignant Mesothelioma ◽  
Nerve Root ◽  
Spinal Canal ◽  
Content Type ◽  
Lower Trunk ◽  
Local Spread ◽  
History Of ◽  
Fine Print

✓ This 54-year-old man with a history of right-sided malignant mesothelioma presented with signs of a partial spinal cord syndrome. The tumor had invaded the lower trunk of the brachial plexus and spread along the T-1 nerve root beneath the arachnoid onto the spinal cord itself. Mesothelioma, despite its known predilection for local spread, is rarely encountered within the spinal canal. Neurotropism is commonly encountered in facial malignancies; however, it has never been reported to affect the brachial plexus and spinal cord.

Amyloidoma of the thoracic spine

2001 ◽  
Vol 94 (2) ◽  
pp. 299-301 ◽  
Author(s):  
Vaishali S. Suri ◽  
Medha Tatke ◽  
Sushil Kumar ◽  
Vikas Gupta
Keyword(s):  
Back Pain ◽  
Thoracic Spine ◽  
Polarized Light ◽  
Complete Resection ◽  
Benign Lesions ◽  
Double Refraction ◽  
Lower Extremity Weakness ◽  
Content Type ◽  
History Of ◽  
Fine Print

✓ The authors report the case of a patient with amyloidoma of the thoracic spine. A 34-year-old man presented with a 2-month history of upper-back pain, bilateral lower-extremity weakness, and numbness below the nipple. A computerized tomography study revealed an extradural mass with destruction of the T-2 lamina and pedicle. Intraoperatively, there was a pinkish, partially suctionable mass infiltrating the muscle plane and causing destruction of the T-2 lamina. Histological examination showed typical amyloid masses that demonstrated apple-green double refraction on examination of the Congo red—stained section under polarized light. Amyloidomas are rare benign lesions that, unlike other forms of amyloidosis, have an excellent prognosis. A cure is possible with complete resection of the mass.

Cauda equina syndrome of long-standing ankylosing spondylitis

1990 ◽  
Vol 73 (3) ◽  
pp. 441-447 ◽  
Author(s):  
Micam W. Tullous ◽  
Holger E. I. Skerhut ◽  
Jim L. Story ◽  
Willis E. Brown ◽  
Eduardo Eidelberg ◽  
...  
Keyword(s):  
Ankylosing Spondylitis ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Cauda Equina Syndrome ◽  
Neurological Complication ◽  
Cauda Equina ◽  
Valuable Insight ◽  
Content Type ◽  
Insight Into ◽  
Fine Print

✓ Cauda equina syndrome as a neurological complication of long-standing ankylosing spondylitis was first reported in 1961. The syndrome is relatively uncommon and its pathophysiology is still poorly understood. Based on their experience with such a case, the authors review the clinical, electrographic, histological, and radiographic features of the syndrome, including the findings of magnetic resonance (MR) imaging. The addition of MR imaging to the evaluation of patients with ankylosing spondylitis and the cauda equina syndrome not only aids in the diagnosis of the syndrome but may also provide valuable insight into the pathophysiology of this condition.

Postoperative recovery of complete sudden paraplegia due to lumbar schwannoma

2005 ◽  
Vol 2 (5) ◽  
pp. 601-603 ◽  
Author(s):  
Tjokorda Mahadewa ◽  
Harsan Harsan ◽  
Setyowidi Nugroho ◽  
Mark Bernstein
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Postoperative Recovery ◽  
Conus Medullaris ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Content Type ◽  
Pathological Evaluation ◽  
History Of ◽  
Fine Print

✓ The authors present a rare case of acute complete paraplegia due to a lumbar schwannoma. The clinical presentation, magnetic resonance imaging features, and management strategy are discussed. A 29 year-old man presented with acute complete paraplegia and bladder and bowel incontinence. He had a history of stable back pain and a 4-year history of lower-extremity numbness bilaterally. Magnetic resonance imaging revealed an enhancing extraaxial mass filling the spinal canal over two segments below the conus medullaris. An L1–3 laminectomy was performed and the tumor was completely removed. Pathological evaluation showed features characteristic of a schwannoma. The patient regained almost complete motor function after 6 months. To the authors' knowledge, this is the first reported case of acute complete paraplegia secondary to lumbar schwannoma. Possible mechanisms of this occurrence are discussed.

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