Posttraumatic syringomyelia

1981 ◽  
Vol 55 (2) ◽  
pp. 276-281 ◽  
Author(s):  
John C. Oakley ◽  
George A. Ojemann ◽  
Ellsworth C. Alvord
Keyword(s):  
Fourth Ventricle ◽  
Review Of The Literature ◽  
Content Type ◽  
Posttraumatic Syringomyelia ◽  
Medullary Parenchyma ◽  
Fine Print

✓ The ninth case of posttraumatic syringomyelia with postmortem confirmation is presented. Onset of symptoms occurred 19 years after the original trauma. A review of the literature with a discussion of postulated mechanisms of syrinx distention follows. The present case differs from previously reported postmortem cases in that there was communication through the medullary parenchyma with the fourth ventricle.

Posttraumatic syringomyelia

1973 ◽  
Vol 39 (4) ◽  
pp. 485-492 ◽  
Author(s):  
Donald R. McLean ◽  
Jack D. R. Miller ◽  
Peter B. R. Allen ◽  
S. Ali Ezzeddin
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Subarachnoid Space ◽  
Fourth Ventricle ◽  
Contrast Material ◽  
Positive Contrast ◽  
Content Type ◽  
Cord Injury ◽  
Posttraumatic Syringomyelia ◽  
Fine Print

✓ A detailed study of posttraumatic syringomyelia is reported. The interior of the syrinx was outlined by positive contrast and gas myelography. The contrast material entered the syrinx via a communication between the cavity and the subarachnoid space at the site of spinal cord injury. The syrinx also communicated with the fourth ventricle. It is postulated that posttraumatic syringomyelia results from the dissection of cystic remnants of hematomyelia known to be present at the site of serious spinal cord injury. Dissection occurs when pressure within the cyst is increased by elongation of the spinal cord during neck movements, principally flexion. Posttraumatic syringomyelia should be treated by a surgical procedure, which allows permanent drainage of the syrinx into the subarachnoid space.

Unusual causes of trigeminal neuralgia treated by gamma knife radiosurgery

2002 ◽  
Vol 97 ◽  
pp. 533-535 ◽  
Author(s):  
Jin Woo Chang ◽  
Jae Young Choi ◽  
Young Sul Yoon ◽  
Yong Gou Park ◽  
Sang Sup Chung
Keyword(s):  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Fourth Ventricle ◽  
Gamma Knife Radiosurgery ◽  
Brain Magnetic Resonance Imaging ◽  
Resonance Imaging ◽  
Segmental Demyelination ◽  
Content Type ◽  
Clinical Responses ◽  
Fine Print

✓ The purpose of this paper was to present two cases of secondary trigeminal neuralgia (TN) with an unusual origin and lesion location. In two cases TN was caused by lesions along the course of the trigeminal nerve within the pons and adjacent to the fourth ventricle. Both cases presented with typical TN. Brain magnetic resonance imaging revealed linear or wedge-shaped lesions adjacent to the fourth ventricle, extending anterolaterally and lying along the pathway of the intraaxial trigeminal fibers. The involvement of the nucleus of the spinal trigeminal tract and of the principal sensory trigeminal nucleus with segmental demyelination are suggested as possible causes for trigeminal pain in these cases. It is postulated that these lesions are the result of an old viral neuritis. The patients underwent gamma knife radiosurgery and their clinical responses have been encouraging to date.

Progressive neurological deficits with benign intracerebral cysts

1986 ◽  
Vol 65 (5) ◽  
pp. 706-709 ◽  
Author(s):  
Yoko Nakasu ◽  
Jyoji Handa ◽  
Kazuyoshi Watanabe
Keyword(s):  
Histological Examination ◽  
Computerized Tomography ◽  
Cyst Wall ◽  
Benign Lesion ◽  
Ct Scanning ◽  
Neurological Deficits ◽  
Review Of The Literature ◽  
Content Type ◽  
Ct Findings ◽  
Fine Print

✓ Two patients with benign intracerebral cysts are reported and a brief review of the literature is given. Although computerized tomography (CT) scanning is useful in detecting a variety of intracerebral cysts, the CT findings are not specific for any lesion. An exploratory operation with establishment of an adequate route of drainage and a histological examination of the cyst wall are mandatory in the management of patients with a progressive but benign lesion.

Brain-stem hemangioma calcificans

1983 ◽  
Vol 59 (1) ◽  
pp. 150-152 ◽  
Author(s):  
Michele Occhiogrosso ◽  
Aristide Carella ◽  
Paola D'aprile ◽  
Giacomo Vailati
Keyword(s):  
Brain Stem ◽  
Cavernous Hemangioma ◽  
Diagnosis And Treatment ◽  
Review Of The Literature ◽  
Content Type ◽  
Fine Print

✓ A case of brain-stem hemangioma calcificans is described. The few cases reported in the literature prove the rarity of this tumor, which is considered a benign variant of cerebral cavernous hemangioma. Diagnosis and treatment of these tumors are briefly discussed with a review of the literature including 11 previous cases.

Circumferential fracture of the skull base causing craniocervical dislocation

2002 ◽  
Vol 97 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Ganesh Rao ◽  
Adam S. Arthur ◽  
Ronald I. Apfelbaum
Keyword(s):  
High Speed ◽  
Unusual Case ◽  
Motor Vehicle ◽  
Neurological Impairment ◽  
Craniocervical Junction ◽  
Motor Vehicle Accidents ◽  
Review Of The Literature ◽  
Content Type ◽  
Vehicle Accidents ◽  
Fine Print

✓ Fractures of the craniocervical junction are common in victims of high-speed motor vehicle accidents; indeed, injury to this area is often fatal. The authors present the unusual case of a young woman who sustained a circumferential fracture of the craniocervical junction. Despite significant trauma to this area, she suffered remarkably minor neurological impairment and made an excellent recovery. Her injuries, treatment, and outcome, as well as a review of the literature with regard to injuries at the craniocervical junction, are discussed.

Delayed myelopathy secondary to retained intraspinal metallic fragment

1981 ◽  
Vol 55 (6) ◽  
pp. 979-982 ◽  
Author(s):  
F. Douglas Jones ◽  
Ronald E. Woosley
Keyword(s):  
Thoracic Spine ◽  
Stab Wound ◽  
Good Recovery ◽  
Review Of The Literature ◽  
Content Type ◽  
Stab Wounds ◽  
Fine Print

✓ The authors present a case of delayed myelopathy arising 8 years after a stab wound to the thoracic spine, with intradural retention of the knife tip. Following removal of the knife tip, the patient had a good recovery. A review of the literature documents eight additional cases of delayed myelopathy secondary to retained fragments from spinal stab wounds.

Teratoma of the fourth ventricle

1973 ◽  
Vol 38 (3) ◽  
pp. 355-357 ◽  
Author(s):  
Robert J. Morelli
Keyword(s):  
Fourth Ventricle ◽  
Rare Case ◽  
Surgical Removal ◽  
Malignant Teratoma ◽  
Content Type ◽  
Fine Print

✓ The author reports a rare case in which a primary malignant teratoma presented as an obstructing mass in the fourth ventricle. The tumor was not cystic but well encapsulated, and a gross total surgical removal was accomplished. A fatal recurrence occurred within 3 months.

Ultrastructure of the human posttraumatic syrinx

1989 ◽  
Vol 71 (2) ◽  
pp. 239-243 ◽  
Author(s):  
Kesava K. V. Reddy ◽  
Marc R. Del Bigio ◽  
Garnette R. Sutherland
Keyword(s):  
Central Canal ◽  
Ependymal Cells ◽  
Electron Microscopic ◽  
Content Type ◽  
Microscopic Features ◽  
Cell Processes ◽  
Ultrastructural Appearance ◽  
Posttraumatic Syringomyelia ◽  
Communicating Syringomyelia ◽  
Fine Print

✓ Although posttraumatic syringomyelia is a well-established clinicopathological entity, there is a paucity of information on the ultrastructural features of this condition. This study documents the light and electron microscopic features of posttraumatic syringes obtained from two patients who underwent surgical cordectomy. The syringes were lined largely by cell processes of astrocytes. Small regions near the caudal end were lined by flattened ependymal cells that lacked surface specializations. These were thought to represent remnants of the central canal ependyma. The ultrastructural appearance of the syrinx was similar to that of the communicating syringomyelia as well as the periventricular changes that accompany hydrocephalus. The authors conclude that the changes represent the nonspecific sequelae of a distensile force within the syrinx cavity.

Fourth ventricular schwannoma

1990 ◽  
Vol 73 (5) ◽  
pp. 777-781 ◽  
Author(s):  
Gary Redekop ◽  
Kost Elisevich ◽  
Joseph Gilbert
Keyword(s):  
Fourth Ventricle ◽  
Content Type ◽  
Radiographic Features ◽  
Unusual Location ◽  
Pontomedullary Junction ◽  
Fine Print

✓ A schwannoma arising from the dorsum of the pontomedullary junction and presenting as an exophytic mass in the fourth ventricle is described. A ventricular schwannoma has not previously been reported in the literature. The presenting clinical and radiographic features and the pathology of this tumor are summarized, and an explanation is sought for its unusual location.

Transcerebellomedullary fissure approach with special reference to the methods of dissecting the fissure

2001 ◽  
Vol 94 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Toshio Matsushima ◽  
Tooru Inoue ◽  
Takanori Inamura ◽  
Yoshihiro Natori ◽  
Kiyonobu Ikezaki ◽  
...  
Keyword(s):  
Fourth Ventricle ◽  
Posterior Margin ◽  
Lateral Wall ◽  
Microsurgical Anatomy ◽  
Optimal Method ◽  
Content Type ◽  
Lateral Recess ◽  
Tela Choroidea ◽  
Opening Method ◽  
Fine Print

Object. The purpose of the present study was to refine the transcerebellomedullary fissure approach to the fourth ventricle and to clarify the optimal method of dissecting the fissure to obtain an appropriate operative view without splitting the inferior vermis. Methods. The authors studied the microsurgical anatomy by using formalin-fixed specimens to determine the most appropriate method of dissecting the cerebellomedullary fissure. While dissecting the spaces around the tonsils and making incisions in the ventricle roof, the procedures used to expose each ventricle wall were studied. Based on their findings, the authors adopted the best approach for use in 19 cases of fourth ventricle tumor. The fissure was further separated into two slit spaces on each side: namely the uvulotonsillar and medullotonsillar spaces. The floor of the fissure was composed of the tela choroidea, inferior medullary velum, and lateral recess, which form the ventricle roof. In this approach, the authors first dissected the spaces around the tonsils and then incised the taenia with or without the posterior margin of the lateral recess. These precise dissections allowed for easy retraction of the tonsil(s) and uvula and provided a sufficient view of the ventricle wall such that the deep aqueductal region and the lateral region around the lateral recess could be seen without splitting the vermis. The dissecting method could be divided into three different types, including extensive (aqueduct), lateral wall, and lateral recess, depending on the location of the ventricle wall and the extent of surgical exposure required. Conclusions. When the fissure is appropriately and completely opened, the approach provides a sufficient operative view without splitting the vermis. Two key principles of this opening method are sufficient dissection of the spaces around the tonsil(s) and an incision of the appropriate portions of the ventricle roof. The taenia(e) with or without the posterior margin of the lateral recess(es) should be incised.

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