Conversion of multilocular hydrocephalus to unilocular

1972 ◽  
Vol 36 (3) ◽  
pp. 348-350 ◽  
Author(s):  
Albert L. Rhoton ◽  
Manuel R. Gomez
Keyword(s):  
Ventricular System ◽  
Content Type ◽  
Shunting Procedure ◽  
Fine Print

✓ A patient with postinflammatory hydrocephalus had a multiloculated, lateral ventricular system that was treated by a routine shunting procedure after the multiloculated system had been converted into a uniloculated system by direct intraventricular surgery.

Focal dilation and paradoxical collapse of cortical fissures and sulci in patients with normal-pressure hydrocephalus

1998 ◽  
Vol 89 (5) ◽  
pp. 742-747 ◽  
Author(s):  
Andrei I. Holodny ◽  
Ajax E. George ◽  
Mony J. de Leon ◽  
James Golomb ◽  
Andrew J. Kalnin ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Normal Pressure Hydrocephalus ◽  
Normal Pressure ◽  
Ventricular System ◽  
Cortical Atrophy ◽  
Imaging Studies ◽  
Content Type ◽  
Radiological Features ◽  
Shunting Procedure ◽  
Fine Print

Object. The authors describe a subgroup of patients with shunt-proven normal-pressure hydrocephalus (NPH) who presented with focal fissural and sulcal dilation on imaging studies. The specific radiological features and methods of differentiating this condition from cortical atrophy are delineated. Methods. Normal-pressure hydrocephalus has been described as dilation of the ventricles that is out of proportion to the sulci. Sulcal dilation has been taken as evidence of cortical atrophy and has even been used as a criterion to exclude patients from undergoing a shunting procedure. The authors describe five cases of patients with shunt-proven NPH who presented with focal dilation of cortical fissures and sulci. In three of the cases, there was a paradoxical decrease in the size of the dilated fissures and sulci that paralleled the decrease in the size of the lateral ventricles following successful shunting. Conclusions. This study demonstrates that focal fissural and sulcal dilation may represent reservoirs of cerebrospinal fluid analogous to the ventricular system. Patients should not be denied a shunting procedure solely on the basis of focally dilated fissures of sulci.

Cervical spinal cord in experimental hydrocephalus

1972 ◽  
Vol 37 (5) ◽  
pp. 538-542 ◽  
Author(s):  
George J. Dohrmann
Keyword(s):  
Spinal Cord ◽  
Brain Stem ◽  
Cervical Spinal Cord ◽  
Central Canal ◽  
Content Type ◽  
Experimental Hydrocephalus ◽  
Physiological Pressure ◽  
The Brain ◽  
Shunting Procedure ◽  
Fine Print

✓ Adult dogs were rendered hydrocephalic by the injection of kaolin into the cisterna magna. One group of dogs was sacrificed 1 month after kaolin administration, and ventriculojugular shunts were performed on the other group. Hydrocephalic dogs with shunts were sacrificed 1 day or 1 week after the shunting procedure. All dogs were perfused with formalin at physiological pressure, and the brain stem and cervical spinal cord were examined by light microscopy. Subarachnoid granulomata encompassed the superior cervical spinal cord and dependent surface of the brain stem. Rarefaction of the posterior white columns and clefts or cavities involving the gray matter posterior to the central canal and/or posterior white columns were present in the spinal cords of both hydrocephalic and shunted hydrocephalic dogs. Predominantly in the dogs with shunts, hemorrhages were noted in the spinal cord in association with the clefts or cavities. A mechanism of ischemia followed by reflow of blood is postulated to explain the hemorrhages in the spinal cords of hydrocephalic dogs with shunts.

Ventricular perfusion in cats with kaolin-induced hydrocephalus

1974 ◽  
Vol 41 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Howard M. Eisenberg ◽  
James E. McLennan ◽  
Keasley Welch
Keyword(s):  
Spinal Cord ◽  
Subarachnoid Space ◽  
Central Canal ◽  
Ventricular System ◽  
Ventricular Pressure ◽  
Content Type ◽  
Lateral Ventricles ◽  
Spinal Subarachnoid Space ◽  
Wide Range ◽  
Fine Print

✓ Cats were made hydrocephalic by cisternal instillation of kaolin. Three to 8 weeks later it was found by perfusion between the ventricular system and the spinal subarachnoid space that communication had been reestablished through a demonstrably dilated central canal of the spinal cord. Absorption of fluid from the ventricular system, measured both by ventriculospinal perfusion and, after ligation of the spinal cord, by perfusion between the lateral ventricles, was found to be indistinguishable from zero over a wide range of ventricular pressure.

Electrophysiological topography of the human diencephalon

1973 ◽  
Vol 38 (2) ◽  
pp. 204-214 ◽  
Author(s):  
Francisco Velasco ◽  
Pedro Molina-Negro
Keyword(s):  
Electrical Activity ◽  
Movement Disorder ◽  
Internal Structure ◽  
Ventricular System ◽  
Intractable Pain ◽  
Content Type ◽  
Microelectrode Recordings ◽  
Electrical Activities ◽  
Fine Print ◽  
Made In

✓ Microelectrode recordings made in 64 human cases of movement disorder or intractable pain were used to study the relation of the site of electrical activity to the ventricular system. Standardizing the cases by dividing the AC-PC line in equal parts and using the same units to divide the areas above and below the intercommissural line and the distance of the electrodes to the midline revealed that the dispersion of the electrical activities in regard to AC-PC line was minimal and overlapping practically nonexistent. It is concluded that, at least for the areas explored, the size of each diencephalon nucleus is proportional to the size of other diencephalic nuclei, and its internal structure and relation to radiological landmarks are fairly constant.

Pineoblastoma with an unusually long survival

1988 ◽  
Vol 69 (2) ◽  
pp. 287-291 ◽  
Author(s):  
Yuji Uematsu ◽  
Toru Itakura ◽  
Seiji Hayashi ◽  
Norihiko Komai
Keyword(s):  
Cell Differentiation ◽  
Electron Microscopic ◽  
Content Type ◽  
Long Survival ◽  
Microscopic Studies ◽  
Stereotaxic Biopsy ◽  
Autopsy Specimens ◽  
Shunting Procedure ◽  
Fine Print

✓ The authors report a case of pineoblastoma with a 9-year follow-up period after stereotaxic biopsy, a shunting procedure, and radiotherapy. Light and electron microscopic studies of biopsy and autopsy specimens revealed no cell differentiation of the pineoblastoma. The possible factors predisposing to long survival are discussed in comparison with the course in patients with medulloblastoma.

New lumboperitoneal shunt for communicating hydrocephalus

1976 ◽  
Vol 44 (2) ◽  
pp. 258-261 ◽  
Author(s):  
Harold J. Hoffman ◽  
E. Bruce Hendrick ◽  
Robin P. Humphreys
Keyword(s):  
Communicating Hydrocephalus ◽  
Content Type ◽  
T Tube ◽  
The Past ◽  
Lumboperitoneal Shunt ◽  
Tube Type ◽  
Shunting Procedure ◽  
Fine Print

✓ The authors describe a T-tube Silastic shunting device which has been used for lumboperitoneal shunting in 62 patients with communicating hydrocephalus during the past 3 years. In 38 patients it was inserted as a primary shunting procedure; 24 patients had the shunt inserted following problems secondary to arachnoiditis created by a polyethylene-type lumboperitoneal shunt. The shunt described here has not led to arachnoiditis when inserted as a primary shunting procedure. In 61% of patients no operative revisions of their shunt has been required to date, and 81% continue to do well on their T-tube type shunt.

Ventriculofiberscope: a new technique for endoscopic diagnosis and operation

1973 ◽  
Vol 38 (2) ◽  
pp. 251-256 ◽  
Author(s):  
Takanori Fukushima ◽  
Buichi Ishijima ◽  
Kimiyoshi Hirakawa ◽  
Norio Nakamura ◽  
Keiji Sano
Keyword(s):  
Ventricular System ◽  
Endoscopic Diagnosis ◽  
New Technique ◽  
Content Type ◽  
A New Technique ◽  
Fine Print

✓ The authors report a new ventriculofiberscope useful in both diagnosing and operating on lesions of the ventricular system. The technique and its advantages are illustrated in representative cases.

Spontaneous rupture of a metastatic brain tumor into the ventricular system

1971 ◽  
Vol 34 (3) ◽  
pp. 412-416
Author(s):  
Robert H. Wilkins ◽  
Wang-Kuen Wu
Keyword(s):  
Cerebrospinal Fluid ◽  
Brain Tumor ◽  
Spontaneous Rupture ◽  
Ventricular System ◽  
Metastatic Brain Tumor ◽  
Content Type ◽  
Surgical Exposure ◽  
First Case ◽  
The Brain ◽  
Fine Print

✓ Two cases are reported in which spontaneous rupture of a metastatic brain tumor occurred into the ventricular system, leading to the dissemination of the tumor contents in the cerebrospinal fluid. The site of rupture was demonstrated by ventriculography in the first case and by surgical exposure in the second. These cases support the assumption that metastatic neoplasms within the brain may rupture into the ventricular system and spread via the cerebrospinal fluid pathways.

Reexpansion of previously collapsed ventricles: the slit ventricle syndrome

1982 ◽  
Vol 56 (4) ◽  
pp. 536-539 ◽  
Author(s):  
M. Deborah Hyde-Rowan ◽  
Harold L. Rekate ◽  
Frank E. Nulsen
Keyword(s):  
Computerized Tomography ◽  
High Resistance ◽  
Ventricular System ◽  
Shunt Revision ◽  
Slit Ventricle Syndrome ◽  
Content Type ◽  
Low Resistance ◽  
Slit Ventricle ◽  
Fine Print

✓ This study reports six cases of hydrocephalic children with the “slit ventricle syndrome” who evidenced reexpansion of the ventricular system following insertion of high-resistance valves and anti-siphon devices. The authors contend that slit ventricles and subsequent ventricular coaptation can be prevented by elimination or early replacement of low-resistance valves, and maintenance of normal- or nearly normalsized ventricles by shunt revision with valve upgrade and/or an anti-siphon device, as judged by the appearance of the ventricles on computerized tomography.

Ventriculolymphatic shunt

1977 ◽  
Vol 47 (1) ◽  
pp. 86-95 ◽  
Author(s):  
Ludwig G. Kempe ◽  
Russell Blaylock
Keyword(s):  
Thoracic Duct ◽  
Operative Technique ◽  
Adult Patients ◽  
Terminal Portion ◽  
Content Type ◽  
General Review ◽  
Upper Thoracic ◽  
Shunting Procedure ◽  
Fine Print

✓ The authors report the cases of 16 adult patients who underwent ventriculolymphatic shunt procedures with apparent good results. The follow-up period is from 2 to 12 years. The anatomy of the terminal portion of the thoracic duct studied in 51 patients undergoing sympathectomy of the lower cervical-upper thoracic ganglionic chain is reported. The operative technique of the ventriculothoracic duct shunting procedure is described, and a general review of the function of the shunt as compared with that of ventriculoatrial shunts is presented.

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