PURPOSE To maximize the extent of tumor resection and minimize postoperative neurological deficits in patients with brain neoplasms, it is very important to evaluate the integrity of the corticospinal tract (CST) before surgery. We attempted to determine whether CST abnormality in these patients correlates with clinical motor weakness. METHODS We retrospectively evaluated 19 patients (16 men,...

Reprint requests to: Dr. M. Banna, Department of Radiology, McMaster University Medical Centre, 1200 Main Street West, Hamilton, Ontario Canada L8S 4J9. INTRODUCTION The principles of computerized tomography have been outlined in a previous publication (Banna and Porteous, 1976). The present paper describes our experience with the scan in various intracranial lesions. Our findings correlate wel...

The carcinogenicity of N-methyl-N-nitrosourea (MNU) has been demonstrated in several species for a variety of tissues, particularly the nervous system. Boxer dogs, a breed with a high incidence of spontaneous tumors (in cluding brain tumors), were exposed to MNU to determine their susceptibility to MNU and to compare the induced tumors with the types of tumors reported in the literature. Twenty...

PURPOSE Our objective was to determine the usefulness of routine administration of contrast material in brain MR imaging for the evaluation of areas of probable myelin vacuolization and neoplasms in patients with neurofibromatosis type 1 (NF-1). METHODS We retrospectively reviewed 112 consecutive contrast-enhanced brain MR studies obtained over a period of 7 years in 109 symptomatic and asymp...

The carcinogenicity of N-methyl-N-nitrosourea (MNU) has been demonstrated in several species for a variety of tissues, particularly the nervous system. Boxer dogs, a breed with a high incidence of spontaneous tumors (in cluding brain tumors), were exposed to MNU to determine their susceptibility to MNU and to compare the induced tumors with the types of tumors reported in the literature. Twenty...

AIM To provide a profile of second malignant neoplasms (SMN) in patients with childhood primary malignant brain tumour originating from neuroepithelial tissues with latest data in a population-based study. METHODS Surveillance, Epidemiology, and End Results (SEER) database (1973-2007) was used to identify above-stated patients. SMN patients were further identified, and standardised incidence ...

BACKGROUND Demyelinating diseases can present as space occupying lesions with in the brain. It is clinically and radiologically difficult to differentiate them from primary neoplasms. Histopathologically they mimic astrocytic neoplasms closely and identifying these lesions correctly has a profound impact in treatment and prognosis of these patients. AIMS AND OBJECTIVES The objective was to de...

OBJECTIVE To evaluate the role of stereotactic cyst aspiration in the context of multimodality management of cystic glial and metastatic tumors, we retrospectively reviewed our experience with 38 patients during a 10-year interval. METHODS All 38 patients had one or more computed tomography or magnetic resonance imaging guided stereotactic cyst aspirations. Twenty-seven patients had glial neo...

Ampullary neoplasms are one of the causes of obstructive jaundice. Endoscopic retrograde cholangiopancreatography (ERCP) is useful procedure for diagnosing and tissue sampling of ampullary neoplasms. Ampullectomy by resecting entire ampulla provides whole lesion for pathologic evaluation and also is appropriate for real pathologic staging for further management decision but ampullectomy conside...