Biomedical subjects

G R DeLong

Publications and source records attributed to G R DeLong.

57 records · Page 4Linked to original sources

PubMedDate not supplied

Protracted epileptiform encephalopathy: an unusual form of partial complex status epilepticus.

An 11-year-old previously healthy boy had an abrupt onset of partial complex, focal, multifocal, and generalized seizures, with interictal expressive aphasia, extreme emotional lability, agitation, and complex visual and auditory hallucinations. EEGs showed frequent runs of rhythmic high-voltage delta over the right and subsequently over the right and left temporal and frontal regions. All other studies were negative (repeated computed tomography, spinal fluids, viral titers, and cultures). Nadir during the second month showed virtual unresponsiveness, prolonged rhythmic motor and apneic seizures, total anorexia, and sleeplessness. Remission of the electrical and clinical seizure activity and a gradual improvement through a state of agitation and emotional lability occurred during the third and fourth months. One year later he was entirely normal. Compared with the other previously documented cases of prolonged partial complex status, this case is notable for its florid and severe symptomatology, long duration, and final benign outcome.

Brain Diseases↗

PubMedDate not supplied

Magnetic resonance imaging evidence of hippocampal sclerosis in progression: a case report.

A 32-month-old child presented in status epilepticus (SE) involving the left side of the body. Fast spin-echo magnetic resonance imaging (FSE-MRI) with hippocampal volumetry performed < or = 24 h after the seizure showed increased T2 signal of the right hippocampus, but no atrophy. Complex partial seizures (CPS) appeared at age 33 months, and three more episodes of SE occurred between 33 and 37 months of age. Follow-up FSE-MRI at 34 and at 45 months of age demonstrated progressive hippocampal atrophy with resolution of the increased T2 signal. Her CPS became intractable and, at age 51 months, she underwent right temporal lobectomy. In the ensuing 5 months, she has had only one major motor seizure. This case demonstrates that acute increased hippocampal T2 signal intensity can occur soon after SE and hippocampal sclerosis (HS) may become evident within months in the setting of recurrent early childhood SE. This observation may support the hypothesis that early childhood SE can lead to HS. Furthermore, this case suggests that years of temporal lobe CPS may not be necessary for development of HS.

Brain Diseases↗

PubMedDate not supplied

Gd-DTPA-enhanced MR imaging of leptomeningeal spread of primary intracranial CNS tumor in children.

Three children with known primary brain neoplasms and leptomeningeal disease were evaluated with MR imaging. Two of the patients had medulloblastoma and one had pineoblastoma. The presence of leptomeningeal tumor spread was established by positive CSF cytopathology in conjunction with compatible contrast-enhanced CT findings. Contrast-enhanced CT, nonenhanced MR, and Gd-DTPA-enhanced MR studies were then compared. In two cases, leptomeningeal lesions were seen better with Gd-DTPA-enhanced MR than with contrast-enhanced CT. In all three cases, Gd-DTPA MR imaging revealed lesions that were not identified on noncontrast MR. Gd-DTPA-enhanced MR imaging is useful when searching for intracranial leptomeningeal tumor deposits in pediatric patients at risk for this condition.

Brain Neoplasms↗