Intracranial hemangiopericytomas (HPCs) are rare central nervous system tumors arising from Zimmermann pericytes or mesenchymal cells. It is often difficult to distinguish these tumors from meningiomas based on clinical features and radiological findings. HPCs have been clinically detected in many of the intracranial compartments; here, we present a case with presumed meningioma that was adjace...

Intracranial dermoid cysts are benign, slow growing tumors derived from ectopic inclusions of epithelial cells during closure of neural tube. These lesions, accounting for less than 1% of intracranial tumors, have characteristic computed tomography (CT) and magnetic resonance imaging (MRI) appearances that generally permits preoperative diagnosis. However, the radiologic features are uncommon a...

Background & Objective: Gliomas are the most common type of primary intracranial tumors in adults. The expression of estrogen receptors varies in different grades of glial tumors, and some studies have suggested that this expression might have a prognostic value. It seems that estrogen receptor expression negatively correlates with the histological grade of gliomas. In the pres...

We reviewed 59 cases of pineal tumors and intracranial germ-cell tumors. Most pineal tumors occurred in the first three decades of life, with the exception of pineocytomas, which were seen at a mean age of 34. A male preponderance was noted in the various pineal tumors, except for pineocytomas. The most common tumor of the pineal region was germinoma, which usually showed high density with homo...

Down syndrome (DS) has an increased risk of leukemia and a ecreased incidence of solid tumors [1]. However, Asian patients ith DS do not have a lower risk of brain tumors, especially germ ell tumors [2]. Satge et al. summarized 38 central nervous system umors in DS and reported that 14 (61%) of 23 cases under age 5 were germ cell tumors [3]. All reported cases were Asian, and olk sac tumors (YS...

OBJECTIVE Ependymomas are rare intracranial neuroepithelial tumors and the most common location is intramedullary. The aim was to analyze the characteristics of these tumors to determine the patients' overall survival and the likelihood of recurrence. METHOD Data of clinical presentation, tumor location, duration of symptoms, degree of resection and complementary treatment of 34 patients with...

Intracranial germ-cell tumors (GCTs) represent 10-15% of all pediatric brain tumors in East Asia. There is a wide histopathological spectrum of intracranial GCTs. Germinomas and nongerminomatous GCTs are the two major classifications. It is difficult to distinguish different subtypes of intracranial GCTs based solely on imaging studies, however, some tumor markers, such as α-fetoprotein or β-hu...

4 Raynor RB. Papilledema associated with tumors of the spinal cord. Neurology 1969; 19: 700-4. 5 Matzkin D, Slamovits T, Genis I, Bello J. Disc swelling: a tall tail? Swv Ophthalmol 1992; 37: 130-6. 6 Gardner WJ, Spitter DK, Whitten C. Increased intracranial pressure caused by increased protein content in cerebrospinal fluid. An explanation of papilledema in certain cases of small intracranial ...

PURPOSE Our purpose was to determine the sensitivity, specificity, and receiver operator characteristic (ROC) curve of a fast screening MR protocol in children and adolescents with suspected intracranial tumors. METHODS One hundred forty-one patients (mean age, 9.7 years; range, 2 months to 23.5 years) with suspected brain tumor were entered in a case-control study. Eighty-seven patients had ...