scholarly journals An 8-Year-Old Girl with A Supratentorial Mass

2017 ◽  
Vol 28 (1) ◽  
pp. 125-126
Author(s):  
Katherine E. Schwetye ◽  
Karen Gauvain ◽  
David Rodriguez ◽  
Catherine Cottrell ◽  
David D. Limbrick ◽  
...  
Keyword(s):  
Supratentorial Mass

The effects of mass-induced intracranial pressures on arterial hypertension and survival in awake cats

1972 ◽  
Vol 37 (5) ◽  
pp. 514-527 ◽  
Author(s):  
Stanley J. Goodman ◽  
Donald P. Becker ◽  
John Seelig
Keyword(s):  
Intracranial Pressure ◽  
Systemic Hypertension ◽  
Content Type ◽  
Arterial Blood ◽  
Mass Size ◽  
Intracranial Pressures ◽  
Relationship Of ◽  
The Relationship ◽  
Awake Cats ◽  
Supratentorial Mass

✓ Intracranial pressures above and below the tentorium, arterial blood pressure, heart rate, and respiratory rate were recorded continuously before, during, and after expansion of a supratentorial mass in awake unsedated cats. In general, as the mass enlarged, the intracranial pressure rose; however, considerable variation was observed among animals with respect to specific mass size and associated intracranial pressures. There was considerable variation in the relationship of supratentorial pressure to infratentorial pressure. No animal survived that had sustained a mass-induced pressure exceeding 1100 mm H2O, and survival was shorter with greater pressures. Systemic hypertension occurred always and only when the infratentorial pressure exceeded 600 mm H2O, regardless of the magnitude of the associated supratentorial intracranial pressure. The methodological limitations of previous studies of mass-induced intracranial hypertension appear to have been substantially reduced by the technique described.

Congenital Supratentorial and Infratentorial Peripheral Neurogenic Tumor: A Clinical, Ultrastructural, and Immunohistochemical Study

Neurosurgery ◽  
1986 ◽  
Vol 19 (3) ◽  
pp. 426-433 ◽  
Author(s):  
David S. Moss ◽  
Stephen J. Haines ◽  
Arnold S. Leonard ◽  
Louis P. Dehner
Keyword(s):  
Spindle Cell ◽  
Immunohistochemical Study ◽  
Operative Procedure ◽  
Cranial Nerves ◽  
Vascular Differentiation ◽  
Spindle Cell Neoplasm ◽  
Nerve Sheath ◽  
Neuroectodermal Tumors ◽  
The Central Nervous System ◽  
Supratentorial Mass

Abstract Congenital neoplasms of the central nervous system are extremely rare, although they have been well documented since the earliest reports from the mid-19th century. Medulloblastoma, other primitive neuroectodermal tumors, and various types of gliomas have comprised the majority of cases. This report describes a highly unusual infratentorial and supratentorial tumor presenting as a scalp mass in a neonate who experienced in utero distress. The supratentorial mass extended through a defect in the skull to the parietooccipital lobe, and the infratentorial aspect involved the 9th and 10th cranial nerves in the region of the cerebellopontine angle. A complex spindle cell neoplasm incorporating peripheral nerve sheath and vascular characteristics was further characterized by electron microscopy and immunohistochemistry. Based upon these studies, the tumor was interpreted as a congenital schwannoma with divergent vascular differentiation. The child has been tumor-free for approximately 2 years after the initial operative procedure.

Effect on the Cushing response of different rates of expansion of a supratentorial mass

1978 ◽  
Vol 49 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Abdul Hamid Zidan ◽  
John P. Girvin
Keyword(s):  
Heart Rate ◽  
Full Range ◽  
Blood Gases ◽  
Systemic Arterial Pressure ◽  
Critical Volume ◽  
Experimental Conditions ◽  
Content Type ◽  
Cerebral Dysfunction ◽  
Cushing Response ◽  
Supratentorial Mass

✓ The effects on the three components (respiration, blood pressure, and heart rate) of the Cushing response (CR) were studied in cats by the continuous expansion of a supratentorial balloon. The rate of expansion was varied over the range of 0.006 to 0.6 ml/min, during which systemic arterial pressure, heart rate, respiratory rate, and blood gases were monitored. For the different rates the time the CR took to develop, and the balloon volume required for that development were measured. The final volume (“critical volume”) for eliciting the CR was more or less constant over the full range of rates of infusion (balloon expansion), a fact that supports the Monro-Kellie doctrine. This constancy of critical volume (CCV) gives rise to a highly statistically significant relationship between the rate of infusion and the latency to the production of the CR, and it is described by a power curve. Thus the development of cerebral dysfunction under these experimental conditions is independent of the rate of expansion and only dependent upon this critical volume. Exceptions to this concept of a critical volume, at the extreme of rates of expansion of lesions in patients, are predicted.

Long-term outcome after medical reversal of transtentorial herniation in patients with supratentorial mass lesions

2000 ◽  
Vol 28 (5) ◽  
pp. 1556-1564 ◽  
Author(s):  
Adnan I. Qureshi ◽  
Romergryko G. Geocadin ◽  
Jose I. Suarez ◽  
John A. Ulatowski
Keyword(s):  
Term Outcome ◽  
Long Term Outcome ◽  
Transtentorial Herniation ◽  
Mass Lesions ◽  
Medical Reversal ◽  
Supratentorial Mass

Vertebrobasilar spasm: A significant cause of neurological deficit in head injury

1978 ◽  
Vol 48 (4) ◽  
pp. 560-564 ◽  
Author(s):  
Lawrence F. Marshall ◽  
Derek A. Bruce ◽  
Leonard Bruno ◽  
Thomas W. Langfitt
Keyword(s):  
Head Injury ◽  
Brain Stem ◽  
Neurological Examination ◽  
Neurological Deficit ◽  
Vertebral Angiography ◽  
Anterior Circulation ◽  
Content Type ◽  
Basilar Arteries ◽  
Burr Holes ◽  
Supratentorial Mass

✓ Cerebral vasospasm in the anterior circulation has been recognized as a significant factor in the sequelae of head injury; however, vertebrobasilar spasm resulting from trauma has received much less attention. In the past year we have observed six patients where spasm in the major vessels of the posterior circulation was primarily or in part responsible for the neurological deficit. In such cases, the neurological examination may suggest a supratentorial mass with herniation and, in three of our cases, burr holes or carotid angiography were performed first. However, in every instance neurological signs present on admission indicated primary brain-stem dysfunction. In each of the six cases vertebral angiography demonstrated significant spasm in either the vertebral or basilar arteries. Intracranial pressure was monitored in each of the six patients and did not exceed 25 mm Hg in any. In cases of head injury where the neurological examination indicates brain-stem dysfunction inconsistent with or after a supratentorial mass has been excluded, vertebral angiography may aid in the diagnosis and subsequent management of such patients.

Unilateral Fixed Dilation of the Pupil as a False-localizing Sign with Intracranial Hemorrhage: Case Report and Literature Review

Neurosurgery ◽  
2001 ◽  
Vol 49 (5) ◽  
pp. 1251-1256 ◽  
Author(s):  
Laurence A.G. Marshman ◽  
Charles E. Polkey ◽  
Christopher C. Penney
Keyword(s):  
Artery Aneurysm ◽  
Mass Effect ◽  
Left Middle Cerebral Artery ◽  
Eye Opening ◽  
The Right ◽  
False Localizing Sign ◽  
Mass Lesions ◽  
Cerebral Artery Aneurysm ◽  
Supratentorial Mass ◽  
Left Middle

ABSTRACT OBJECTIVE AND IMPORTANCE Although other focal signs may prove “false localizing,” it is a neurosurgical axiom that unilateral fixed dilation of the pupil occurs ipsilateral to a supratentorial mass. CLINICAL PRESENTATION A 25-year-old man collapsed with a dense right hemiplegia and a Glasgow Coma Scale score of 6 (eye opening, 1; motor, 4; verbal, 1) after rupture of a left middle cerebral artery aneurysm associated with an intrasylvian hematoma. Initially, both pupils had remained equal-sized and reactive: however, within hours, the right (contralateral) pupil became fixed and dilated (i.e., false localizing). For some time, the left (ipsilateral) pupil remained small and reactive; at emergency craniotomy, this also became fixed and equally dilated. INTERVENTION After evacuation of the clot and wrapping of the aneurysm, both pupils rapidly became equal-sized and reactive. Twenty-four hours later, concurrent with massive left hemispheric swelling and a midline shift, the left (ipsilateral) pupil became unilaterally fixed and dilated (i.e., false localizing). Eventually, the right (contralateral) pupil also became fixed and dilated, concurrent with cardiovascular collapse. Death occurred within 10 hours. CONCLUSION Unilateral fixed dilation of the pupil in patients with hemispheric mass lesions may be false localizing. Furthermore, disparate “herniating mechanisms” can arise despite mass effect emanating from the same side. Because such mechanisms cannot be witnessed, their nature remains speculative. An extensive review is contained in this article.

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