Search Results
Results 451 - 500 of 695
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Kodsi S R - - 1993
A 40-year-old man presented with a left optic neuropathy. Magnetic resonance imaging demonstrated a contrast-enhancing mass along the course of the left trigeminal nerve and in the region of the left cavernous sinus with suprasellar extension. Preoperatively, he had a serum polyclonal gammopathy. Pathologic diagnosis was an intracranial plasma cell ...
Shields C B - - 1993
Two available commercial units for radiosurgery are the modified linear accelerator (LINAC scalpel) and the gamma knife. Advantages of the LINAC scalpel over the gamma knife are its greater accuracy, the availability of a wide range of collimator sizes that allow for a more homogeneous field of radiation for large ...
Kasantikul V - - 1993
Two patients with malignant prolactinoma are reported. The diagnosis of malignancy depends on the demonstration of invasion of brainstem and subarachnoid space and on the presence of marked cellular pleomorphism and mitotic activity. Review of the literature revealed that such malignant tumors were more common in men than in women. ...
el-Fiki M E - - 1993
Sphenoid sinus mucoceles are rare lesions. Those with intracranial extension were thought to be extremely rare in Western literature. We encountered three such cases within 1 year. These cases were confirmed on pathological examination to be pyoceles of the sphenoid sinus, extending to the sella and suprasellar region. Bilateral exophthalmos, ...
Pilarczyk M - - 1993
Intracranial cysts are most often found in the lateral sulcus between the cerebral hemispheres and at the midline in the posterior cranial cavity. Covered with the clear or turbid arachnoidea, they are filled with a clear, colorless or slightly yellow cerebrospinal fluid, sometimes they have a considerable size and tend ...
Lupret V - - 1993
Cranial base lesions present a great challenge even to the most skilled neurosurgeon due to the difficulty of gaining access to the cranial base, the complex anatomical relations, hips of neurovascular structures involved in the pathology of the cranial base and bone destruction caused by tumors leaving intracranial space open ...
Koshiyama H - - 1992
A 28-year-old man with chondroid chordoma, an uncommon variant of chordoma, is reported. The patient presented with visual disturbance and hypopituitarism. The latter is a rare complication of intracranial chordoma. The preoperative diagnosis of chondroid chordoma of the skull base was based on unique findings on computed tomography and magnetic ...
Wilms G - - 1992
The contribution of MR in 10 patients with surgically proven intracranial hemangioblastomas was retrospectively evaluated and correlated with the computed tomographic findings. Angiography was obtained in eight cases. Multiple lesions were shown in only two patients, but none proved to have von Hippel-Lindau disease. In six patients the tumor typically ...
Singer J I - - 1992
The majority of pediatric neoplasias of the brain are midline growths in the posterior fossa. These mass lesions lead to obstruction of cerebrospinal fluid circulation and cause increased intracranial pressure. Affected children typically present with insidious complaints of headache and vomiting. Ataxia, cranial nerve palsies, or pyramidal tract signs may ...
Namasivayam J - - 1992
The correlation of computerized tomography (CT) features with survival of 28 patients with primary intracranial lymphoma was analysed retrospectively. Severe perifocal oedema, periventricular tumours and lesions which were non-homogenously enhancing or non-enhancing were found to be associated with a poor prognosis. The prognosis when multiple lesions were present was almost ...
Nelson S C - - 1992
Trilateral retinoblastoma, the intracranial malignancy associated with bilateral retinoblastoma, is an uncommon and clinically aggressive malignancy with a uniformly fatal outcome. Three children with newly diagnosed trilateral retinoblastoma were treated with systemic (cyclophosphamide and vincristine) and intrathecal (methotrexate, hydrocortisone, and cytarabine) chemotherapy, as well as craniospinal irradiation (one patient) in ...
Shin Y K - - 1992
Nausea and vomiting are so frequent under regional anesthesia during parturition that these symptoms can be misleading and may cause the clinician to overlook a potential intracranial lesion. In the case we have reported, it was not until the onset of blindness that an intracranial lesion was suspected. Although the ...
Okuno S - - 1992
Recurrent intracranial germinoma with multiple spinal metastases occurred in a 16-year-old male presenting with persistent headache and visual disturbances. Computed tomography revealed enhanced lesions in the pineal region, anterior horn, and infundibulum. Conventional irradiation achieved remission, but local recurrences requiring further irradiation occurred after 23 months. Magnetic resonance imaging showed ...
Kalra V - - 1992
Neurocysticercosis was diagnosed in 0.89% of children enrolled in our Child Neurology Clinic in the years 1979 to 1990. The commonest presenting symptom was seizures (90%) followed by raised intracranial pressure (44%). CT scans revealed a variety of lesions including low and high attenuation cysts, periventricular edema, hydrocephalus and calcification. ...
Murray R - - 1992
Lyme neuroborreliosis is one of the chronic manifestations of Lyme disease and is caused by the neurotropic spirochete, Borrelia burgdorferi. Two of the three stages of Lyme disease potentially involve the central nervous system: a second stage that may manifest as meningitis, cranial neuritis, or radiculoneuritis; and a third stage, ...
Rosser S V - - 1992
Flaws, biases, and ethical problems surrounding research and diagnosis may lead to inappropriate or inequitable treatments that exacerbate or fail to improve the misery that some individuals face due to their psychiatric conditions. Possible androcentric biases in the choice and definition of categories for diagnosis available in DSM-III-R may in ...
Kuhn M J - - 1992
The radiological findings associated with alloimmune thrombocytopenia have not been well described. We present two such cases diagnosed in utero by ultrasound and discuss the radiographic findings of intracranial hemorrhage and hydrocephalus secondary to alloimmune thrombocytopenia. An awareness of this entity and its early diagnosis and intervention may greatly reduce ...
Bhattacharjee M B - - 1992
An unusual case of an isolated histioproliferative lesion arising from the suprasellar region is described. The presence of lymphophagocytosis suggested that this represented an extranodal intracranial form of sinus histiocytosis with massive lymphadenopathy.
Lyons B M - - 1992
Inverting papilloma is a locally aggressive neoplasm; however, intracranial extension is very rare. The authors herein report a case of massive inverting papilloma with intracranial extension and an associated frontal sinus mucocele, causing marked frontal lobe compression. Treatment consisted of combined anterior craniofacial resection. Magnetic resonance imaging provided accurate preoperative ...
Nagayama M - - 1992
This is the first report to describe the coexistence of two rare diseases, intracranial paramedian hourglass-shaped dermoid and steatocystoma multiplex. A 46-year-old female with a history of steatocystoma multiplex, bradydactylies and kyphosis showed oscillopsia, ataxia and hemifacial spasm. MRI findings suggested a giant dermoid cyst extending from the left middle ...
Horn M - - 1992
Clinical, histopathological, and ultrastructural features of an extended intracranial malignant neoplasm are presented. Following incomplete extirpation of a large epidural tumor at the temporal base of the skull, the 21-year-old male patient suffered from several local recurrences and died at the age of 27. The neoplasm was defined by its ...
Paulus W - - 1992
We present the case of a 7-year-old boy who had a solitary mass within Meckel's cave that recurred 6 weeks after the initial resection. The histological, immunohistochemical, electron-microscopical, and molecular genetical features established the lesion's histiocytic nature. Our findings showed that it was closely related to juvenile xanthogranuloma, a benign ...
Karakhan V B VB Department of Neurology and Neurosurgery, Moscow Medical Stomatological Institute, - - 1992
The possibilities of endoscopic operative procedures in preformed and artificial intracranial and intracerebral cavities are described. Endoscopic investigations were carried out on 166 cadavers; death was due to extracranial pathology and severe brain injury. 132 patients with intracranial lesions were operated on endoscopically. An extended description of endofiberscopic intracranial topographical ...
Fierro B - - 1991
A case presenting with clinical features of ocular myasthenia and a false-positive edrophonium test is reported. Brain CT and MRI scan revealed a pineal region tumor histologically verified as germinoma. We recommend evaluating patients with clinical features of myasthenia gravis (MG) confined to the ocular muscles for intracranial mass lesions.
Dutton D A - - 1991
A 28-year-old woman developed symptoms of raised intracranial pressure associated with an obstructive hydrocephalus following a spinal anaesthetic administered for a Kiellands rotation forceps delivery. A diagnosis of an unverified pineal body tumour was made after computerised axial tomography scanning and the symptoms were effectively treated by the insertion of ...
Ellis M E - - 1991
A case of extensive intracranial tuberculoma is presented. The patient had been treated for 5 years with a standard antituberculosis regimen but she had been grossly non-compliant. This had led to emergence of multi-resistant Mycobacterium tuberculosis producing progressive disease and extensive cranial nerve damage and proptosis. The unusual CT and ...
Narbone M C - - 1991
A 69 year old man complaining of a cluster-like headache is reported. CT scan showed a median intracranial calcified lesion. Two main considerations are: 1) the importance of searching for an underlying structural lesion in patients with an "atypical" cluster headache; 2) the possible significance of a lesion localized close ...
Baldwin H E - - 1991
The differential diagnosis of subcutaneous lesions of the scalp is extensive and includes many tumors with intracranial and intraosseous extension. The vast majority of lesions seen by the dermatologist will be benign. However, certain lesional characteristics increase the likelihood of a serious disorder and these must be evaluated preoperatively. We ...
Worthington C - - 1991
We describe a system for stereotactic radiosurgery with a linear accelerator. This technique allows treatment of small (less than 40 mm diameter) intracranial lesions, including vascular malformations, and primary and metastatic tumors that are deep within the brain or in areas not amenable to open surgery. A beam of ionizing ...
Wilson M - - 1991
During the 3 years that the enzyme-linked immunoelectrotransfer blot (EITB) assay for the diagnosis of human cysticercosis has been in use at the Centers for Disease Control, 50 patients with both pathologically confirmed neurocysticercosis and computed tomographic (CT) or magnetic resonance imaging (MRI) scan results were identified. Of 32 patients ...
Kondziolka D - - 1991
Stereotactic radiosurgery using the gamma unit represents a unique neurosurgical treatment method for the management of selected intracranial vascular malformations and tumors. During a closed-skull single-session procedure that focuses 201 individual beams of gamma irradiation, a high-radiation dose is delivered to the lesion, with a steep dose fall-off peripherally. In ...
McGann G M - - 1991
The cranial computed tomographic (CT) scans reported as showing metastatic disease in patients with malignant melanoma (MM) seen at the Westminster Hospital over a 5 year period were reviewed. Ninety-eight patients with intracranial metastatic MM were identified. Twelve had an initial scan which was reported as normal and particular attention ...
Paller A S - - 1991
Nasal dermoids, gliomas, and encephaloceles are uncommon congenital lesions that result from aberrant embryologic development. We have treated 46 children with these nasal lesions. In view of the potential intracranial connection, patients are at risk for intracranial infection, and early surgical correction is thus imperative. Neuroimaging studies may help to ...
Vaquero J - - 1991
The pineal region is one of the rarest sites in the brain for metastatic involvement of systemic malignant tumors. A review of the literature shows that approximately 70 such cases have been reported previously, and most of them were diagnosed by autopsy. In this brief report we describe three cases ...
Katayama Y - - 1991
Ectopic intracranial retinoblastomas are rare. These tumors usually occur in the pineal, parasellar, or suprasellar regions several years after the successful treatment of ocular retinoblastomas with no evidence of direct extension or distant metastasis. We report here a case of ectopic retinoblastoma occurring within the third ventricle. The tumor was ...
Wardinsky T D - - 1991
Nasal dermoid and sinus cysts (NDSC) are uncommon congenital anomalies that may have intracranial extension and can be associated with other anomalies. We identified 22 patients in a retrospective review of cases diagnosed with NDSC at our institution over the past 10 years. Nine (41 percent) had associated anomalies and ...
Saito R - - 1990
Ceruminous gland tumors (ceruminomas), which usually involve the external auditory canal, are rare. A case of ceruminoma invading the temporal bone and histologically proven to be papillary adenoma is presented. The tumor recurred and invaded intracranially after subtotal removal and was finally diagnosed as adenocarcinoma. The importance of early diagnosis ...
Greenlee J E - - 1990
CSF evaluation is the single most important aspect of the laboratory diagnosis of meningitis. Analysis of the CSF abnormalities produced by bacterial, mycobacterial, and fungal infections may greatly facilitate diagnosis and direct initial therapy. Basic studies of CSF that should be performed in all patients with meningitis include measurement of ...
Nagatani K - - 1990
A 58-year-old female was admitted to our hospital with nausea, vomiting, and gait disturbance of 1 year duration. Postcontrast computed tomographic scans demonstrated enhanced lesions in the left cerebellopontine angle (CPA), the retrosellar region, the right parasellar region, and the left parietooccipital convexity. The left parieto-occipital tumor was totally removed ...
Bale P M - - 1990
Sequestrated meningocele of the scalp has seldom been reported and is difficult to diagnose. Clinically it resembles dermoid cyst, hemangioma, or alopecia; radiographs and computed tomographic scans reveal no cranial bone defect, and surgery discloses no communication with the cranial cavity. Histologically, the lesion is characterized by a loose arrangement ...
Miyachi S - - 1990
The authors describe a 42-year-old woman with systemic xanthogranulomatosis and bilateral intraorbital tumors, who subsequently developed multiple lesions of the intracranial dura mater, spinal cord, retroperitoneum, pericardium, and mediastinum. Systemic xanthogranulomatosis is histologically similar to systemic Weber-Christian disease, except for the absence of subcutaneous panniculitis. Immunohistochemical studies suggest that this ...
Snyder H S - - 1990
The authors present a patient with a traumatic epidural hematoma who complained only of headache and presented to the emergency department 48 hours after a fall. Mental status and neurological examination were normal. This delayed presentation is more commonly seen when a subdural hematoma is present but may result from ...
Thacker A K - - 1990
We report a successfully managed case of neuroleptic malignant syndrome in which the diagnosis was delayed by one week because of the absence of an established psychiatric disease. A high degree of clinical suspicion must be maintained if the diagnosis of this rare, curable but often fatal, complication of neuroleptic ...
Truwit C L - - 1990
Intracranial lipomas are uncommon lesions whose development remains poorly understood. To clarify the anatomic and embryologic features of intracranial lipomas, we retrospectively reviewed the MR scans of 42 patients with 44 intracranial lipomas. Interhemispheric lipomas were the most common, accounting for 45% of cases. The remainder of the lesions were ...
Feldmann E - - 1990
The distribution of cerebrovascular lesions is affected by race. Blacks and Japanese have more intracranial occlusive cerebrovascular disease, while whites have more extracranial disease. Despite a high incidence of stroke in China, there are few formal studies of the distribution of vascular occlusive disease in Chinese populations. We compared clinical ...
Gawel M J - - 1990
We present further evidence for a sympathetic defect of vasomotor control of the anterior cerebral artery (ACA) on the side of the headache during cluster periods. In 119 cluster headache patients, utilizing transcranial Doppler, we measured CO2 reactivity of the major intracranial vessels, in and out of cluster. Reactivity was ...
Negovetic L - - 1990
The case of a young woman (20 years) with a gigantic intracranial hydatid cyst (110 x 90 x 65 mm) is presented. The first manifestation was a grand mal seizure followed by symptoms of raised intracranial pressure. The origin of the cyst was in the diploe of the right cheek, ...
Kamiya K - - 1990
A 76-year-old female with an intracranial epidural abscess having a long history of about 30 years is presented. Craniogram, carotid angiogram, and computed tomographic scan showed a huge calcified lesion with hyperostosis at the right parietal region. The abscess appeared to have granulated and calcified due to long-lasting stagnation of ...
Grabel J C - - 1990
A case of metastatic pheochromocytoma is reported in which the diagnosis was determined on the basis of a painless scalp mass. Subsequent to biopsy and histological diagnosis, further investigations revealed a large skull lesion with intracranial extension, an adrenal mass, and various catecholamine abnormalities. The radiological characteristics and operative findings ...
Sickler G K - - 1990
This is a report of extensive intracranial papillary endothelial hyperplasia in a 12-day-old twin. The infant presented with progressive macrocephaly, anemia and hydrocephalus. An MR image showed a large (6 x 5 cm) mass in the right middle cranial fossa. Histologic examination of the resected mass revealed multifocal hemorrhage, organizing ...
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