Chiasmal apoplexy

1982 ◽  
Vol 56 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Charles G. Maitland ◽  
Seisho Abiko ◽  
William F. Hoyt ◽  
Charles B. Wilson ◽  
Tomomi Okamura
Keyword(s):  
Computerized Tomography ◽  
Visual Function ◽  
High Density ◽  
Vascular Anomalies ◽  
Optic Glioma ◽  
Spontaneous Bleeding ◽  
Content Type ◽  
Surgical Evacuation ◽  
Fine Print

✓ Four patients with chiasmal syndromes were found to have intrachiasmal hematomas. Computerized tomography scans showed high-density suprasellar masses in all cases. Cryptic vascular anomalies were presumed to be responsible for spontaneous bleeding into the chiasm in three of the cases. In the remaining case, hemorrhage was due to an occult optic glioma. Surgical evacuation of clotted blood resulted in improved visual function in three of the four cases.

Clinicopathological investigation of gyral high density on computerized tomography following severe head injury in children

1995 ◽  
Vol 82 (6) ◽  
pp. 995-1001 ◽  
Author(s):  
Takehide Onuma ◽  
Yasuko Shimosegawa ◽  
Motonobu Kameyama ◽  
Hiroaki Arai ◽  
Kiyoshi Ishii
Keyword(s):  
Computerized Tomography ◽  
Head Trauma ◽  
Brain Atrophy ◽  
High Density ◽  
Ct Scans ◽  
Severe Head Trauma ◽  
Content Type ◽  
Subacute Stage ◽  
Fine Print ◽  
Diffuse Brain

✓ The authors have treated five cases of severe head trauma in children in which abnormally high density along gyri, “gyral high density,” was seen on plain computerized tomography (CT) scans in the subacute stage of the injury. The prognosis in all cases was poor, with either severe disability or a vegetative state as the outcome due to significant brain atrophy following gyral high density. This pathology was classified into three clinical stages: 1) acute stage, cerebral ischemia in which there is diffuse low density of the cerebrum on CT scans (most marked on the 3rd and 4th days); 2) subacute stage, hemorrhagic infarction showing gyral high density on plain CT scans (between 1 and 4 weeks); and 3) chronic stage, brain atrophy (beginning 4 weeks after the trauma). In their consecutive series of head-injured patients (516 children, 1459 adults), the authors did not find gyral high density on CT scan in adults. This is probably due to the fact that adults who suffer the severe head trauma associated with diffuse brain swelling or diffuse brain edema cannot survive, thus making this gyral high density unique to children.

Optic nerve apoplexy

1986 ◽  
Vol 64 (2) ◽  
pp. 313-316 ◽  
Author(s):  
Peter L. Reilly ◽  
Peter E. Oatey
Keyword(s):  
Optic Nerve ◽  
Arteriovenous Malformation ◽  
Visual Function ◽  
The Other ◽  
Content Type ◽  
Loss Of Vision ◽  
Surgical Evacuation ◽  
Subfrontal Approach ◽  
Fine Print

✓ Two patients who suffered loss of vision due to spontaneous optic nerve hematomas are described. The hemorrhage was contained within the pial confines of the involved optic nerve, although there was some extension more posteriorly. The diagnosis of an intraneural cryptic arteriovenous malformation was histologically confirmed in one case and was supported by evidence in the other. Surgical evacuation by the subfrontal approach was undertaken and visual function improved.

Mineralization of the falx cerebri simulating interhemispheric vascular anomalies on MR imaging

1990 ◽  
Vol 72 (6) ◽  
pp. 971-974 ◽  
Author(s):  
John R. Ruge ◽  
Eric J. Russell ◽  
Robert M. Levy
Keyword(s):  
Magnetic Resonance ◽  
Mr Imaging ◽  
Computerized Tomography ◽  
Vascular Anomalies ◽  
Vascular Lesions ◽  
Falx Cerebri ◽  
Content Type ◽  
Fine Print

✓ Three cases of ossification of the falx cerebri initially mistaken for vascular lesions based on their magnetic resonance (MR) appearance are reviewed. The MR imaging and computerized tomography characteristics of mineralization of the falx cerebri and their differentiation from interhemispheric vascular lesions are discussed.

Functional thalamic depression in a case of reversible central pain due to a spinal intramedullary cyst

1995 ◽  
Vol 83 (1) ◽  
pp. 163-165 ◽  
Author(s):  
Carlo Alberto Pagni ◽  
Sergio Canavero
Keyword(s):  
Spinal Cord ◽  
Computerized Tomography ◽  
Single Photon ◽  
Photon Emission ◽  
Central Pain ◽  
Single Photon Emission ◽  
Content Type ◽  
Surgical Evacuation ◽  
Intramedullary Cyst ◽  
Fine Print

✓ In this report the authors discuss a case of central pain of spinal cord origin due to a spinal thoracic intramedullary cyst. Single-photon emission computerized tomography with technetium-99 hexamethylpropyleneamineoxime showed thalamic hypoperfusion contralateral to the affected leg. Surgical evacuation resulted in total relief of the pain and normalization of the thalamic alteration. The reader can infer from these findings that functional alterations in thalamic processing may be important in the genesis of central pain.

Visual changes after gamma knife surgery for optic nerve tumors

2005 ◽  
Vol 102 (Special_Supplement) ◽  
pp. 143-146 ◽  
Author(s):  
Yang Kwon ◽  
Jun Seok Bae ◽  
Jae Myung Kim ◽  
Do Hee Lee ◽  
Soon Young Kim ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Gamma Knife ◽  
Gamma Knife Surgery ◽  
Optic Glioma ◽  
Content Type ◽  
Nerve Sheath ◽  
Optic Nerve Sheath Meningioma ◽  
Optic Nerve Tumors ◽  
Visual Changes ◽  
Fine Print

✓ Tumors involving the optic nerve (optic glioma, optic nerve sheath meningioma) are benign but difficult to treat. Gamma knife surgery (GKS) may be a useful treatment. The authors present data obtained in three such cases and record the effects of GKS.

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.

Intracranial epithelial cysts

1976 ◽  
Vol 44 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Beth J. L. MacGregor ◽  
Jeffrey Gawler ◽  
John R. South
Keyword(s):  
Computerized Tomography ◽  
Content Type ◽  
Diagnostic Aspects ◽  
Epithelial Cysts ◽  
Emi Scanner ◽  
Fine Print

✓ The authors report two cases with large unilocular intracerebral epithelial cysts. Diagnosis was facilitated in both patients by computerized tomography (EMI scanner). The clinical and diagnostic aspects of previously reported cases are reviewed, and the etiology and pathogenesis of these cysts discussed.

Preliminary experience with Brown-Roberts-Wells (BRW) computerized tomography stereotaxic guidance system

1983 ◽  
Vol 59 (2) ◽  
pp. 217-222 ◽  
Author(s):  
M. Peter Heilbrun ◽  
Theodore S. Roberts ◽  
Michael L. J. Apuzzo ◽  
Trent H. Wells ◽  
James K. Sabshin
Keyword(s):  
Ct Scan ◽  
Computerized Tomography ◽  
Guidance System ◽  
Production Model ◽  
Ct Scanner ◽  
Content Type ◽  
Ct Scanners ◽  
Guidance Systems ◽  
Fine Print

✓ The production model of the Brown-Roberts-Wells (BRW) computerized tomography (CT) stereotaxic guidance system is described. Hardware and software modifications to the original prototype now allow the system to be used independently of the CT scanner after an initial scan with the localizing components fixed to the skull. The system is simple and efficient, can be used universally with all CT scanners, and includes a phantom simulator system for target verification. Preliminary experience with 74 patients at two institutions is described. It is concluded that CT stereotaxic guidance systems will become important tools in the neurosurgical armamentarium, as they allow accurate approach to any target identifiable on the CT scan.

Acute subdural hematoma

1982 ◽  
Vol 57 (2) ◽  
pp. 254-257 ◽  
Author(s):  
Henry A. Shenkin
Keyword(s):  
Computerized Tomography ◽  
Subdural Hematoma ◽  
Neurological Status ◽  
Neurological Dysfunction ◽  
Acute Subdural Hematoma ◽  
Consecutive Series ◽  
Content Type ◽  
Subdural Hematomas ◽  
Fine Print

✓ In a consecutive series of 39 cases of acute subdural hematoma (SDH), encountered since computerized tomography diagnosis became available, 61.5% were found to be the result of bleeding from a small cortical artery, 25.6% were of venous origin, 7.7% resulted from cerebral contusions, and 5% were acute bleeds into chronic subdural hematomas. Craniotomy was performed promptly on admission, but there was no difference in survival (overall 51.3%) between patients with arterial and venous bleeds. The only apparent factor affecting survival in this series was the preoperative neurological status: 67% of patients who were decerebrate and had fixed pupils prior to operation died. Of patients with less severe neurological dysfunction, only 20% failed to survive.

The use of computerized tomography in the diagnosis of cerebral hydatid cysts

1979 ◽  
Vol 50 (3) ◽  
pp. 339-342 ◽  
Author(s):  
Tuncalp Özgen ◽  
Aykut Erbengi ◽  
Vural Bertan ◽  
Süleyman Saǧlam ◽  
Özdemir Gürçay ◽  
...  
Keyword(s):  
Hydatid Cyst ◽  
Computerized Tomography ◽  
Ct Scanning ◽  
Hydatid Cysts ◽  
Content Type ◽  
Cerebral Hydatid Cyst ◽  
Cyst Membrane ◽  
Fine Print

✓ Eleven cases of cerebral hydatid cyst, diagnosed by computerized tomography (CT), are presented. The importance of CT in minimizing the possibility of accidentally tapping or tearing the cyst membrane is stressed. Repeat CT scanning after removal of the cyst revealed atrophy in the affected hemisphere.

Sign in / Sign up

Export Citation Format

Share Document