CT and MR findings were retrospectively reviewed in 12 patients with germ cell tumors originating from the non-pineal regions. Cystic or necrotic components were seen in 6 patients. Of 4 germinomas, 2 showed mixed density on the CT. The MR signal intensity of the tumor was non-specific. Of 8 germinomas, 4 were inhomogeneously enhanced on postcontrast CT and T1-weighted MR images. CT and MR features of germinomas originating from non-pineal regions frequently differ from those of germinomas originating from the pineal region. The mass of the tumor often appeared cystic and inhomogeneously enhanced following contrast infusion.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0895-6111(00)00006-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Temporal profile of serum melatonin levels in paediatric pineal tumours subjected to surgery: newer insights.
Childs Nerv Syst
September 2023
Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Uttar Pradesh, Lucknow, India.
Introduction: Pineal tumours (PTs) are rare and histologically variable. Serum melatonin is a well-known product of this gland, albeit with uncertain clinical implications vis-à-vis its utility as a potential tumour marker. In particular, the temporal profile of serum melatonin during the disease course remains unclear and infrequently studied.
View Article and Find Full Text PDFNon-pineal supratentorial primitive neuro-ectodermal tumors (sPNET) in teenagers and young adults: Time to reconsider cisplatin based chemotherapy after cranio-spinal irradiation?
Pediatr Blood Cancer
July 2009
Division of Oncology, Oncology Centre, Addenbrooke's Hospital, Cambridge, United Kingdom.
Background: Supratentorial PNET (sPNET) are rare CNS tumors of embryonal origin arising in children and adults. The treatment of sPNET for all age groups at our cancer center has been based on the management of medulloblastoma (MB), involving neurosurgical debulking followed by cranio-spinal irradiation (CSI) and systemic chemotherapy.
Methods: Medical records were reviewed to gather demographic and clinical data about all embryonal CNS tumors in children and adults from 2001 to 2007.
Benign isolated fibrohistiocytic tumor arising from the central nervous system. Considerations about two cases.
Clin Neuropathol
November 2002
Department of Neurology, Hospital de Santa Maria, Lisboa, Portugal.
Benign fibrous histiocytomas (BFHs) are tumors with fibroblastic and histiocytic components without histological anaplasia. Intracerebral lesions are exceptional and to our knowledge a spinal location was not yet described. We describe 2 cases of BFHs of the neural axis: the first, a 22-month-old boy with Down's syndrome, presented with a paraparesis and the magnetic resonance (MR) of the spine disclosed an intradural extramedullary, thoracic mass, totally resected; the second, a 13-year-old boy with left partial motor seizures, in whom the MR of the brain showed an intracerebral, right frontal tumor, also surgically removed.
View Article and Find Full Text PDFGerm cell tumors of the central nervous system originating from non-pineal regions: CT and MR features.
Comput Med Imaging Graph
August 2000
Department of Radiology, School of Medicine, Akita University, 1-1-1, Hondo, Akita 010-8543, Akita City, Japan.
CT and MR findings were retrospectively reviewed in 12 patients with germ cell tumors originating from the non-pineal regions. Cystic or necrotic components were seen in 6 patients. Of 4 germinomas, 2 showed mixed density on the CT.
View Article and Find Full Text PDFCircadian rhythms of body temperature, activity and oxygen consumption were recorded in the nine-banded armadillo, Dasypus novemcinctus, a mammal lacking a distinct pineal gland. The rhythms were entrained by light-dark cycles and appeared to be phase-coupled. Under constant illumination, the animals displayed free-running circadian rhythms with period lengths of slightly less than 24 hr.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!