Encapsulated intracerebral hematomas: a defined entity

1993 ◽  
Vol 78 (5) ◽  
pp. 829-833 ◽  
Author(s):  
José M. Roda ◽  
Fernando Carceller ◽  
Antonio Pérez-Higueras ◽  
Carmen Morales
Keyword(s):  
Vascular Malformation ◽  
Vascular Malformations ◽  
Young Patients ◽  
Mass Effect ◽  
Magnetic Resonance Images ◽  
Intracerebral Hematoma ◽  
Content Type ◽  
Male Predominance ◽  
Perifocal Edema ◽  
Fine Print

✓ Encapsulated intracerebral hematoma is an interesting and not widely appreciated entity. It can be defined as an intraparenchymal hematoma found in normotensive patients, usually caused by histologically confirmed vascular malformations, characterized by a gradual clinical onset, and presenting a well-defined capsule at operation. One case is presented and 25 previously reported cases are reviewed, all reflecting the above-mentioned characteristics. The hematomas reviewed here occurred in relatively young patients with a mean age of 35 years and a clear male predominance (19 males, seven females). A ring of contrast enhancement around a lesion of variable density, usually with mass effect and perifocal edema, is the most relevant feature on computerized tomography. Findings on magnetic resonance images are described for the first time in the reported case. A vascular malformation was the most frequent cause found on histological examination (12 of the 26 total cases). No proven cause was found in the remaining 14 cases, although a small vascular malformation, destroyed or thrombosed after rupturing and bleeding, is the most likely etiology in these patients.

Chronic expanding intracerebral hematoma

1986 ◽  
Vol 65 (5) ◽  
pp. 611-614 ◽  
Author(s):  
Eugenio Pozzati ◽  
Giuliano Giuliani ◽  
Giulio Gaist ◽  
Giancarlo Piazza ◽  
Gilberto Vergoni
Keyword(s):  
Clinical Presentation ◽  
White Matter Lesions ◽  
Mass Effect ◽  
Postoperative Hemorrhage ◽  
Intracerebral Hematoma ◽  
Duration Of Symptoms ◽  
Content Type ◽  
Collagenous Tissue ◽  
Perifocal Edema ◽  
Fine Print

✓ The cases of 10 normotensive patients with chronic intracerebral hematomas are reported. The patients' median age at diagnosis was 42 years. The median duration of symptoms was 22 days. Seizures were thepresenting symptom in 50% of the cases. Computerized tomography almost consistently demonstrated ring-shaped lesions with mass effect and perifocal edema. Arteriography revealed that all but one of the lesions were avascular. All patients had superficial white matter lesions, mostly in the frontoparietal region. All patients were treated surgically. Most of the hematomas were encapsulated and contained blood in various stages of organization. The thick capsule consisted of an outer layer of collagenous tissue and an inner layer of granulation tissue. Occult cerebrovascular malformations were detected in two instances. There were two deaths, both related to recurrent postoperative hemorrhage. This entity can present much like a brain malignancy and should be considered in the differential diagnosis of ring-shaped lesions whatever the clinical presentation. Strategies of treatment are discussed.

Vascular malformations of the brain stem

1989 ◽  
Vol 70 (6) ◽  
pp. 847-852 ◽  
Author(s):  
Douglas Chyatte
Keyword(s):  
Brain Stem ◽  
Vascular Malformation ◽  
Vascular Malformations ◽  
Surgical Removal ◽  
Content Type ◽  
Appropriate Treatment ◽  
Complete Obliteration ◽  
Time Of Presentation ◽  
The Brain ◽  
Fine Print

✓ Vascular malformations of the brain stem are unusual lesions that may pose a diagnostic and therapeutic challenge. Seven patients with vascular malformations involving the brain stem were evaluated; six were treated surgically, with complete obliteration of the lesion in five patients. In five patients symptoms developed only after a hemorrhage had occurred, and three of these suffered a rebleed before appropriate treatment was given. Angiography failed to demonstrate lesions in three cases, which did not appear to protect from repeat hemorrhage since two of the three rebled. There were no operative deaths, and no patients were made permanently worse after surgery. Useful recovery occurred commonly after appropriate treatment and appeared to be possible even in patients who had suffered a catastrophic neurological deficit at the time of presentation. These data indicate that surgical removal of the lesion may be warranted in some patients with symptomatic brain-stem vascular malformation.

Detection of cryptic vascular malformations by computerized tomography

1979 ◽  
Vol 51 (4) ◽  
pp. 546-551 ◽  
Author(s):  
Hideo Terao ◽  
Tomokatsu Hori ◽  
Masao Matsutani ◽  
Riki Okeda
Keyword(s):  
Arteriovenous Malformation ◽  
Computerized Tomography ◽  
Fourth Ventricle ◽  
Vascular Malformations ◽  
Cavernous Angioma ◽  
The Other ◽  
Intracerebral Hematoma ◽  
Content Type ◽  
Subarachnoid Hemorrhages ◽  
Fine Print

✓ Two cases of cryptic vascular malformation that were not demonstrated by cerebral angiography were detected by computerized tomography. One of these patients had a cavernous angioma in the fourth ventricle with recurrent subarachnoid hemorrhages, and the other harbored a small arteriovenous malformation and intracerebral hematoma. The usefulness and limitations of computerized tomography in the identification of cryptic vascular malformations are discussed.

A vascular malformation mimicking an intracanalicular acoustic neurilemoma

1991 ◽  
Vol 74 (3) ◽  
pp. 516-519 ◽  
Author(s):  
Mark E. Linskey ◽  
Peter J. Jannetta ◽  
A. Julio Martinez
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Vascular Malformation ◽  
Vascular Malformations ◽  
Vascular Tumor ◽  
Resonance Imaging ◽  
Content Type ◽  
The Past ◽  
Rare Lesion ◽  
Fine Print

✓ A patient with an enhancing, completely intracanalicular mass on magnetic resonance imaging was operated on for a presumed acoustic neurilemoma, but was found at surgery to have an intracanalicular vascular malformation. This rare lesion should be distinguished from angiomatous change within an acoustic neurilemoma and in the past has been termed “vascular tumor,” “hemangioma,” or “fibro-angioma.” The clinical distinctions between intracanalicular acoustic neurilemomas and intracanalicular vascular malformations and the ability of magnetic resonance imaging to distinguish between the two are discussed.

Congenital astrocytoma presenting with intracerebral hematoma

1979 ◽  
Vol 51 (2) ◽  
pp. 237-239 ◽  
Author(s):  
Steven M. Rothman ◽  
James S. Nelson ◽  
Darryl C. DeVivo ◽  
William S. Coxe
Keyword(s):  
Intracerebral Hemorrhage ◽  
Vascular Malformation ◽  
Pathological Examination ◽  
Intracerebral Hematoma ◽  
Age Group ◽  
Bleeding Diathesis ◽  
Content Type ◽  
Congenital Tumor ◽  
Fibrillary Astrocytoma ◽  
Fine Print

✓ A massive left intracerebral hematoma was surgically evacuated from a 2-week-old infant. Pathological examination showed that the hemorrhage had developed within a fibrillary astrocytoma. Neonatal intracerebral hemorrhage should raise the question of congenital tumor because such a hemorrhage in this age group is rarely the result of trauma, bleeding diathesis, or vascular malformation.

Recurrence of vascular malformation of the scalp 18 years following excision

1971 ◽  
Vol 34 (3) ◽  
pp. 435-437 ◽  
Author(s):  
Harold A. Wilkinson
Keyword(s):  
Bone Defect ◽  
Vascular Malformation ◽  
Vascular Malformations ◽  
Intracranial Extension ◽  
Content Type ◽  
Cirsoid Aneurysm ◽  
Cerebral Vascular Malformations ◽  
Fine Print ◽  
Cerebral Vascular

✓ A vascular malformation (“cirsoid aneurysm”) of the frontal scalp was excised from an 8-year-old girl. Eighteen years later, during her second pregnancy, the malformation recurred. Despite the presence of an underlying bone defect, arteriography excluded an intracranial extension. The frequency of association of vascular malformations of the scalp with cerebral vascular malformations is reviewed, and the need for careful arteriography reiterated.

Cerebral aneurysms in childhood and adolescence

1989 ◽  
Vol 70 (3) ◽  
pp. 420-425 ◽  
Author(s):  
Fredric B. Meyer ◽  
Thoralf M. Sundt ◽  
Nicolee C. Fode ◽  
Michael K. Morgan ◽  
Glen S. Forbes ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Vascular Malformations ◽  
Cerebral Aneurysms ◽  
Mass Effect ◽  
Posterior Circulation ◽  
Childhood And Adolescence ◽  
Postoperative Results ◽  
Content Type ◽  
Presenting Symptoms ◽  
Fine Print

✓ In this study, 24 aneurysms occurring in 23 patients under the age of 18 years (mean 12 years) are analyzed. The male:female ratio was 2.8:1, and the youngest patient was 3 months old. Mycotic lesions and those associated with other vascular malformations were excluded. Forty-two percent of the aneurysms were located in the posterior circulation, and 54% were giant aneurysms. Presenting symptoms included subarachnoid hemorrhage in 13 and mass effect in 11. Several of these aneurysms were documented to rapidly increase in size over a 3-month to 2-year period of observation. All aneurysms were surgically treated: direct clipping was performed in 14; trapping with bypass in four; trapping alone in four; and direct excision with end-to-end anastomosis in two. The postoperative results were excellent in 21 aneurysms (87%), good in two (8%), and poor in one. The pathogenesis of cerebral aneurysms is reviewed.

Mixed arteriovenous malformation and capillary telangiectasia: a rare subset of mixed vascular malformations

1997 ◽  
Vol 86 (4) ◽  
pp. 699-703 ◽  
Author(s):  
Steven D. Chang ◽  
Gary K. Steinberg ◽  
Marshal Rosario ◽  
Rebecca S. Crowley ◽  
Robert F. Hevner
Keyword(s):  
Arteriovenous Malformation ◽  
Vascular Malformation ◽  
Vascular Malformations ◽  
Complete Resection ◽  
Distinct Entity ◽  
Content Type ◽  
First Report ◽  
Capillary Telangiectasia ◽  
Cerebrovascular Malformation ◽  
Fine Print

✓ In this report, the authors discuss the case of a patient with a mixed cerebrovascular malformation in which an arteriovenous malformation (AVM) was associated with a capillary telangiectasia. Recent reports have contained reviews of various subsets of mixed malformations. To the authors' knowledge, however, this is the first report of a mixed vascular malformation with both arterial and capillary components. The patient underwent complete resection of the AVM after presenting with a clinical hemorrhage. She required a second operation to resect the capillary telangiectasia after new symptoms developed several months following the first procedure. The authors conclude that a mixed AVM—capillary telangiectasia is a rare but distinct entity.

Long-term hearing preservation after surgery for vestibular schwannoma

2005 ◽  
Vol 102 (1) ◽  
pp. 6-9 ◽  
Author(s):  
Simone A. Betchen ◽  
Jane Walsh ◽  
Kalmon D. Post
Keyword(s):  
Hearing Preservation ◽  
Magnetic Resonance Images ◽  
Class I ◽  
Repeated Testing ◽  
Content Type ◽  
Factors Influencing ◽  
Long Term Preservation ◽  
Fine Print

Object. Vestibular schwannomas (VSs) are now amenable to resection with excellent hearing preservation rates. It remains unclear whether immediately postoperative hearing is a durable result and will not diminish over time. The aim of this study was to determine the rate of long-term preservation of functional hearing following surgery for a VS and to examine factors influencing hearing preservation. Methods. All patients eligible for hearing preservation (Gardner—Robertson Class I or II) who had undergone resection of a VS by a single surgeon were reviewed retrospectively. Follow-up audiograms and magnetic resonance images were obtained. Of 142 patients deemed eligible for hearing preservation surgery, 38 had immediate postoperative hearing confirmed by an audiogram. In these patients with preserved hearing, the audiographic results demonstrated functional hearing in 30 (85.7%) of 35 patients who underwent repeated testing at a mean follow-up time of 7 years. Delayed hearing loss occurred in five (14.3%) of the 35 patients and did not correlate significantly with the size of the tumor. Hearing improved one Gardner—Robertson class postoperatively in three (7.9%) of the 38 patients. Conclusions. Long-term functional hearing was maintained in 85.7% of patients when it was preserved immediately postoperatively and the result was independent of tumor size. The results of this study emphasize that long-term preservation of functional hearing is a realistic goal following VS surgery and should be attempted in all patients in whom preoperative hearing is determined to be Gardner—Robertson Class I or II.

Preliminary results of linear accelerator radiosurgery for acoustic schwannomas

1996 ◽  
Vol 85 (6) ◽  
pp. 1013-1019 ◽  
Author(s):  
William M. Mendenhall ◽  
William A. Friedman ◽  
John M. Buatti ◽  
Francis J. Bova
Keyword(s):  
Stereotactic Radiosurgery ◽  
Local Control ◽  
Linear Accelerator ◽  
Local Control Rate ◽  
Magnetic Resonance Images ◽  
High Rate ◽  
Content Type ◽  
Treatment Volume ◽  
Fine Print

✓ In this paper the authors evaluate the results of linear accelerator (LINAC)—based stereotactic radiosurgery for acoustic schwannomas. Fifty-six patients underwent LINAC-based stereotactic radiosurgery for acoustic schwannomas at the University of Florida between July 1988 and November 1994. Each patient was followed for a minimum of 1 year or until death; no patient was lost to follow up. One or more follow-up magnetic resonance images or computerized tomography scans were obtained in 52 of the 56 patients. Doses ranged between 10 and 22.5 Gy with 69.6% of patients receiving 12.5 to 15 Gy. Thirty-eight patients (68%) were treated with one isocenter and the dose was specified to the 80% isodose line in 71% of patients. Fifty-five patients (98%) achieved local control after treatment. The 5-year actuarial local control rate was 95%. At the time of analysis, 48 patients were alive and free of disease, seven had died of intercurrent disease, and one was alive with disease. Complications developed in 13 patients (23%). The likelihood of complications was related to the dose and treatment volume: 10 to 12.5 Gy to all volumes, three (13%) of 23 patients; 15 to 17.5 Gy to 5.5 cm3 or less, two (9%) of 23 patients; 15 to 17.5 Gy to more than 5.5 cm3, five (71%) of seven patients; and 20 to 22.5 Gy to all volumes, three (100%) of three patients. Linear accelerator—based stereotactic radiosurgery results in a high rate of local control at 5 years. The risk of complications is related to the dose and treatment volume.

Sign in / Sign up

Export Citation Format

Share Document