Search Results
Results 351 - 400 of 716
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Shukla-Dave A - - 2001
Proton MR spectroscopy (PMRS) has been found to be useful in differentiating various cystic intracranial lesions. The purpose of the present study was to prospectively evaluate the spectral pattern of various cystic lesions of brain with similar imaging appearances and to determine the accuracy of this technique in the differential ...
Schroeder H W - - 2001
OBJECT: Frameless computerized neuronavigation has been increasingly used in intracranial endoscopic neurosurgery. However, clear indications for the application of neuronavigation in neuroendoscopy have not yet been defined. The purpose of this study was to determine in which intracranial neuroendoscopic procedures frameless neuronavigation is necessary and really beneficial compared with a ...
Chan A - - 2001
A 14-year-old girl presented with symptoms of increased intracranial pressure after her head was squeezed at a party. MRI demonstrated a mass that was hypointense to brain on T1WI and heterogeneous in signal on PD and T2WI; compression of the ventricle, midline shift, and mild ventriculomegaly also were present. Contrast ...
Vernau K M - - 2001
The recent application of neuroimaging techniques in veterinary neurology has led to the accurate localization of many types of intracranial lesions but has also created a clinical need, particularly with brain tumors, for a specific intraoperative diagnosis. For human brain tumors, a smear technique has been used successfully for many ...
Murthy J M - - 2001
Of the 21 patients with aspergillosis of central nervous system seen during the years 1990-1997, 16 (76%) had aspergillosis of sino-cranial origin. The occupation in patients with sino-cranial aspergillosis was either agricultural or manual work and predisposing risk factors were present in only two (12.5%) patients. Skull-base syndromes were the ...
Arunkumar M J - - 2001
Neurocutaneous melanosis is a rare disorder characterized by the presence of large or multiple congenital melanocytic naevi and benign or malignant pigment cell tumours of the leptomeninges. Distant metastasis is unusual in primary leptomeningeal/intracranial melanomas. We present the case history of an adult male who had multiple primary intracranial melanomas ...
Sharma R R - - 2000
Primary intracranial ependymal cysts are extremely rare. These are congenital, benign ependyma lined, commonly intraparenchymal and uncommonly extraparenchymal cysts in leptomeningeal location of variable size seen in the adult life. The authors report two cases of symptomatic ependymal cysts: one in the perimesencephalic cistern in a 10-month-old infant presenting with ...
David K M - - 2000
This case is believed to be the first reported recurrent intracranial ganglioglioma with purely neuroblastomatous malignant transformation. A complete macroscopic resection of a right frontal lobe tumor in an 18-year-old woman revealed differentiated ganglioglioma. Seven years later a large, well-demarcated recurrent tumor was again macroscopically totally resected in the same ...
Leistikow E A - - 2000
OBJECTIVE: To distinguish the fact from artifact of an isolated, large, intracranial cyst on prenatal sonography (PSG). BACKGROUND: The use of PSG is rapidly increasing with most obstetric ultrasounds occurring in general community settings like small hospitals and clinics with personnel who have variable training, experience, and interest levels. In ...
Lee A G - - 2000
BACKGROUND: Acute optic neuropathy due to an intracranial lesion may masquerade as optic neuritis or nonarteritic anterior ischemic optic neuropathy (NAION). We reviewed the records of patients who presented with acute unilateral optic neuropathy that was initially diagnosed as optic neuritis or NAION but who ultimately proved to have an ...
Kastenbauer S - - 2000
A 28 year old man presented with a 1 month history of symptoms of intracranial hypertension. Examination showed bilateral papilloedema and meningeal signs. Magnetic resonance imaging showed nodular lesions on the cerebellar and pontine surface and thickening of the thoracic spinal leptomeninges. Throughout the course of the disease, contrast enhancement ...
Asano K - - 2000
A 16-year-old female presented with a rare case of subepicranial varix in the left temporal area manifesting as a soft mass in the left temporal area when she laid down in the left lateral position. Bulging of the mass was observed when intracranial venous pressure was raised by the Valsalva ...
Carvalho G A - - 2000
OBJECTIVE AND IMPORTANCE: This case report illustrates the clinical and radiological relevance of extensive intracranial subarachnoid and ventricular dissemination in dysontogenic (dermoid) tumors. CLINICAL PRESENTATION: We describe a patient with a cerebellopontine angle dysontogenic tumor. Postoperatively, the cyst disseminated fat particles extensively into the subarachnoid space. Magnetic resonance imaging (MRI) ...
Boström J - - 2000
The authors report on an 11-year-old boy in whom proptosis of the eye caused by a benign intraosseous xanthofibroma of the left orbital wall became clinically apparent at the age of 4 years. Two years later he developed bilateral papilledema, at which time computerized tomography and magnetic resonance studies revealed ...
Hata T - - 2000
OBJECTIVE: To visualize an intracranial structure of the fetal central nervous system (CNS) anomaly using transabdominal three-dimensional (3D) sonography. METHODS: A total of 12 cases with fetal CNS anomalies (one unilateral ventriculomegaly; three hydrocephalus; three anencephaly; three holoprosencephaly; one Dandy-Walker cyst; and one enlarged cisterna magna) from 17 to 37 ...
Uthman I W - - 2000
We describe the clinical presentation and course of a patient with autoerythrocyte sensitization (Gardner-Diamond) syndrome, and review the literature for similar cases. A 37-yr-old female presented with recurrent episodes of painful ecchymotic bruising over the anterior aspect of both thighs. These episodes were precipitated by emotional stress. The diagnosis was ...
Jacques C - - 2000
A 33-year-old patient with cranial epidural tuberculoma without history of tuberculosis is described. CT and MR imaging showed a lesion located on both sides of a right frontotemporal bone destruction with epidural extent. Except for a small necrotic core, the lesion enhanced intensely after contrast medium administration. Osteitis and subgaleal ...
Schreiber A - - 2000
BACKGROUND AND PURPOSE: Functional MR (fMR) imaging with blood-oxygen-level-dependent (BOLD) contrast enhancement is increasingly used as a noninvasive tool for presurgical mapping in patients with intracranial tumors. Most physiologic studies of task-related BOLD contrast enhancement have involved healthy volunteers. Therefore, it is not known whether BOLD contrast is evoked in ...
Hore I - - 2000
We report a case of Pott's puffy tumour in a 12-year-old. Owing to the late development of the frontal sinuses, frontal sinus infection in children is rare. When present it can lead to osteomyelitis associated with forehead swelling. Early diagnosis and active treatment prevent progression to life-threatening intracranial spread.
Lee K W - - 2000
An 8-year-old boy developed vomiting and severe headache following minor head trauma. A CT scan of the head demonstrated a lytic lesion of the skull and adjacent epidural hematoma. Surgical evacuation and removal of the skull lesion and hematoma were carried out, and pathologic evaluation resulted in a diagnosis of ...
Vaughan D J - - 2000
A 23-yr-old primagravida sustained a dural puncture during epidural catheter insertion and developed a headache that settled with oral diclofenac and codydramol. On the third day after delivery, she convulsed twice without warning. As plasma urate was increased, the putative diagnosis of an eclamptic fit was made, and magnesium therapy ...
Nakajima Y - - 2000
The authors present a rare case of a giant intracranial mucocele associated with an orbitoethmoidal osteoma in a patient suffering from a generalized convulsive disorder. The broad pedicle of the osteoma had penetrated the cribriform plate and extended intracranially to form a nodular mass in the olfactory groove. The intracranial ...
Caird J - - 2000
A 5 month old boy was found by his mother to have a bony mass behind the left ear which extended intracranially on MRI scan. At surgery it was entirely extradural in location. Microscopically, a biphasic appearance consisting of large pigmented cells arranged into tubules and small nonpigmented basophilic cells ...
Friedman W A - - 2000
Radiosurgery is an increasingly popular method for treating a variety of intracranial tumours. A great deal of treatment data has been accumulated suggesting that radiosurgery may be the treatment of choice for small acoustic schwannomas. Moreover, radiosurgery promises excellent tumour control and minimal risk in the treatment of small meningiomas ...
Tancredi A - - 2000
BACKGROUND: Intracranial hemangio-endotheliomas (HE) are rare vascular tumours that present histological features and biological behaviour of an intermediate malignancy. We report the first case of primary HE presenting as multiple intracranial masses. CASE DESCRIPTION: The patient is a 20-year-old female who presented with paresis of the left arm. Magnetic Resonance ...
Yu X - - 2000
OBJECT: To investigate the role of stereotactic biopsy in planning the optimal management of intracranial space-occupying lesions. PATIENTS AND METHODS: Between December 1989 and December 1999, stereotactic biopsy was performed in 550 patients with intracranial mass lesions that were deep-seated or located in the functional area. There were 340 males ...
Marquardt G - - 2000
A CT-based method of marking superficial intracranial lesions with a needle is presented. This form of neuronavigation can be applied in every neurosurgical centre. Owing to its rapid application it is also suitable for cases of emergency. The neurosurgical approach can be centred precisely over the lesion providing for a ...
Ly J N - - 1999
Spontaneous intracranial hypotension is a rare benign and usually self-limited condition of unknown aetiology. Four cases are presented that illustrate how the MRI features may support a diagnosis suggested on clinical grounds. The MRI findings include diffuse symmetric smooth dural thickening and enhancement, not only at the cranial level, but ...
Bedson C R - - 1999
Benign intracranial hypertension (idiopathic hypertension, pseudomotor cerebrii) describes the syndrome of elevated intracranial pressure without clinical, laboratory or radiological evidence of a focal lesion. Unlike conditions where intracranial pressure is raised due to a space-occupying lesion, dural puncture is not contraindicated. In this report we describe the delivery by caesarean ...
Vaphiades M S - - 1999
This article outlines the various signs and symptoms associated with intracranial gliomas, meningiomas, and hypertensive hemorrhages. It emphasizes the neurologic and neuro-ophthalmologic presentations of these intracranial mass lesions. Important pathways that subserve horizontal eye movements are examined and the ocular motility disorders associated with lesions of these fibers are outlined.
Nucci A - - 1999
We report a case of neurocryptococcosis which is unique in the literature because the patient had a pseudocystic form of the disease during pregnancy and without any evidence of AIDS. The clinical picture was that of intracranial hypertension and the epidemiological background was highly suggestive of cysticercosis. CT showed multiple ...
Ryan J M - - 1999
Over the years, various hypotheses have implicated the role of structural instabilities in the expansion of intracranial saccular aneurysms. Recent nonlinear analyses suggest, however, that particular subclasses of aneurysms are structurally stable (in the mechanics sense) and that we must consider different hypotheses. Indeed, based on an ever-increasing database, it ...
Oursin C - - 1999
Intradural dermoids are rare congenital tumors representing approximately 0.05% of all intracranial lesions. These benign tumors have a typical appearance on CT and MR due to their lipid components. The complication caused by rupture are the spillage of the fatty material into the cerebrospinal fluid. We report a case of ...
Aprile I - - 1999
BACKGROUND AND PURPOSE: T1-, T2-, and proton density (PD)-weighted sequences are used to characterize the content of cystic intracranial lesions. Fluid-attenuated inversion recovery (FLAIR) MR sequences produce T2-weighted images with water signal saturation. Therefore, we attempted to verify whether FLAIR, as compared with conventional techniques, improves the distinction between intracranial ...
Kikuchi M - - 1999
A 6-year-old male presented with headache, vomiting, visual obscuration, and papilledema. Clinical presentation, initial laboratory data, and radiologic evaluation suggested a diagnosis of pseudotumor cerebri. The development of lower cranial nerve palsies after transient resolution of symptoms prompted reassessment of the diagnosis, which revealed retropharyngeal rhabdomyosarcoma involving the right jugular ...
Bhatt A R - - 1999
Two non-twin brothers were found to have intracranial malignant neoplasms. The age of presentation was third and fourth decade but the onset was simultaneous, at the same time. Diagnosis in each of them was made by computed tomography and confirmed by histopathology. Elder among them had cellular ependymoma and the ...
Artico M - - 1999
Intracranial tuberculosis accounts for less than 0.2% of intracranial space-occupying lesions diagnosed and treated in western countries, while it still represents a major neurosurgical finding in underdeveloped countries. The introduction of chemotherapeutic agents for the treatment of tubercular infection, as well as the general improvement in the socio-economic status of ...
Lee V W - - 1999
PURPOSE: To determine the efficacy of sequential thallium and gallium scintigraphy to differentiate intracranial neoplasms (lymphoma and glioma) from other nonmalignant intracranial mass lesions among patients with acquired immunodeficiency syndrome (AIDS). MATERIALS AND METHODS: The authors reviewed the cases of 40 patients with human immunodeficiency virus (HIV) who underwent thallium ...
Tortori-Donati P - - 1999
Contrast-enhancing intracranial masses are rarely found in infants with extracranial capillary haemangiomas (CH). We aimed to assess their nature and progression in three patients undergoing CT and/or MRI. The changes in size of both extra- and intracranial lesions were recorded. In a fourth case, a single examination was obtained. All ...
Mohanty A - - 1999
BACKGROUND: Intracranial tuberculous abscesses are uncommon clinical entities, even in countries where tuberculosis is endemic. Surgical excision and antituberculous treatment is the treatment of choice. The role of stereotactic aspiration in the management of these lesions is highlighted in this communication. METHODS: Three patients, all receiving treatment for pulmonary tuberculosis, ...
Paspala A B - - 1999
BACKGROUND: Lymphomatoid granulomatosis [LYG] is an angiocentric, angiodestructive disease at the higher grade end of the spectrum of angiocentric immunoproliferative lesions. It primarily involves the lungs, but it may also involve several extrapulmonary sites including the central nervous system (CNS), skin, and kidneys. CASE DESCRIPTION: Clinical presentation, radiology and treatment ...
Araki M - - 1999
Extracranial metastasis of an intracranial anaplastic ganglioglioma through a ventriculoperitoneal shunt is reported. A 53-year-old woman was treated by surgery, radiation and chemotherapy and died 2 years later. At autopsy, multiple metastatic lesions were found in the spinal cord, and the abdominal and pleural cavities. Histologically, all the metastatic lesions ...
Knauer-Fischer S - - 1999
A case of a pontine tuberculoma in a 12-year-old male from Somalia is presented. Cranial magnetic resonance imaging, performed in Abu Dhabi 1 month before admission in Germany revealed a tumorous lesion in the pons with surrounding edema; a presumptive diagnosis of a pontine glioma was made. Chest radiograph disclosed ...
Donich D - - 1999
OBJECTIVE AND IMPORTANCE: The presentation, diagnosis, and treatment are described for a patient with a giant ependymoma involving the right cerebellopontine angle extending into the cavernous sinus. This case presents the unusual occurrence of a large extra-axial intracranial ependymoma and is the first reported case of cavernous sinus extension of ...
Jacome D E - - 1998
A young woman with frontal headaches of several months' evolution and monocular transient "tunnel" obscurations that developed after a generalized seizure is described. She had elevation of the optic discs (pseudopapilledema), greater on the side of her visual symptoms. No intracranial lesions were identified. Cerebrospinal fluid pressure was increased, diagnostic ...
Litofsky N S - - 1998
Leiomyosarcoma has recently been identified as an AIDS-related tumor, usually occurring in children in the chest or abdomen. We describe a case of intracranial leiomyosarcoma in an adult with AIDS. An enhancing mass adjacent to the right occipital cortical surface was diagnosed during a work-up for left arm weakness. Imaging ...
Tosomeen A H - - 1998
We describe the case of a 26-year-old Indian woman who presented to our institution with seizures and papilledema. Her diagnosis was originally thought to be neurocysticercosis, but later confirmed to be intracranial tuberculoma. Antituberculous therapy with isoniazid, rifampin, pyrazinamide and ethambutol was initiated. Improvement in the patient's neurological symptoms with ...
Pollo C - - 1998
Dysembryoplastic neuroepithelial tumour (DNT), a non-evolutive intracranial cortical lesion, is generally associated with epileptic seizures principally among youths. A case of a DNT which presented with uncommon clinical features, characterized by severe intracranial hypertension and progressive blindness warranting emergency surgery, is documented. In addition to the classical radiological and neuropathological ...
Nakayama T - - 1998
A 43-year-old male presented with headache localized in the right forehead. Computed tomography and magnetic resonance imaging demonstrated a cystic mass in the frontal sinus, with a huge extension into the anterior cranial fossa. The mass was removed by transcranial surgery. The cyst contained pus. Histological examination of the cyst ...
Chong V F - - 1998
The parapharyngeal space (PPS) is a central space in the deep neck. Intrinsic lesions within this space are limited. Other spaces in the neck are closely related to the PPS and the direction of displacement of this space often suggests the origin of a lesion. The morphology of a lesion, ...
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