13 nəticələr
Supratentorial primitive neuroectodermal tumors and pineoblastomas have traditionally been grouped together for treatment purposes. Molecular profiling of these tumors has revealed a number of distinct entities and has led to the term "CNS-primitive neuroectodermal tumors" BACKGROUND
Our study aimed to elucidate the imaging features for the differentiation of pineal germinoma and other pineal region tumors.
METHODS
Image data sets of computed tomographic (CT) scan and magnetic resonance imaging (MRI) data of 93 pineal region tumors including 33 germinomas, 30
The infratentorial supracerebellar approach is most widely used for pineal tumors. We report our own experience and technical considerations using this approach.
METHODS
From 1982 to 2010, we operated on 232 patients with pineal region tumors. Of these, 201 patients were operated on using a
Acanthosis nigricans is a reaction pattern to over a dozen different causes. The skin, most classic in the axilla, is dark, soft, velvet-like with fine folding and papillae. The mechanism of this skin change is decreased viscosity of extracellular matrix (ECM) combined with mechanical extrusion of
We present a case of growing teratoma syndrome of the pineal region. To our knowledge, this is the fourth case reported in the literature. A 13-year-old boy was referred for intracranial hypertension and bilateral papillary edema. CT scan showed a pineal region tumor with obstructive hydrocephalus.
In the last 11 years we operated on 20 patients (1.03% of all operated brain tumors) with lateral ventricular masses. Anamnesis lasted from 6 months in the case of epileptic seizures to 6 years when headache was the main symptom of disease only. Tumor was located in the anterior cornu and pars
Cerebral internal venous thrombosis are rare and diagnosis is difficult. We report three cases in male adults. Clinical data were headaches, vomiting, dizziness and coma, in relation with an intracranial hypertension, or in a case, cardiocirculatory arrest. Cerebral internal veinous thrombosis was
OBJECTIVE
This study seeks to characterize magnetic resonance imaging (MRI) changes following stereotactic radiosurgery (SRS) of pediatric brain malignancies.
METHODS
Serial MRI evaluations were performed on 21 lesions treated with SRS for either medulloblastoma (n=12), juvenile pilocytic
Stereotactic biopsies of ventricular lesions may be less safe and less accurate than biopsies of superficial lesions. Accordingly, endoscopic biopsies have been increasingly used for these lesions. Except for pineal tumors, the literature lacks clear, reliable comparisons of these two methods. All
The brains of 1851 patients were examined with 160 X 160 matrix computed tomography (CT) during a period of nine months. The CT patterns of 90 supratentorial tumors (excluding sellar tumors) were reviewed. A great variety of CT patterns were found with glioblastomas, the most typical being a tumor
In 121 proven cases of intracranial metastases, lung cancer was as high as 48 per cent. Multiple lesions were noted (67.8%) in almost every type of organ source. Brain parenchyma (80.3%), predominantly supratentorium was the major site of metastases. The minority was observed in leptomeninge,
BACKGROUND
Patients with intracranial masses are often advised to avoid airflight due to concerns of worsening neurological symptoms or deterioration. However, many patients often travel cross-country or internationally to tertiary care centers for definitive care. This study assesses the safety of
BACKGROUND
Data from single-institution studies suggest that perioperative complication rates after stereotactic needle brain biopsies range from 6% to 12%, with permanent morbidity and mortality ranging from 3.1% to 6.4% and 0% to 1.7%, respectively. However, no population-level data are available.