Biomaterial Database

Hypomelanosis of Ito associated with hemimegalencephaly: a clinicopathological study. 1997

T Tagawa, and Y Futagi, and H Arai, and S Mushiake, and M Nakayama

Division of Pediatric Neurology, Osaka Medical Center and Research Institute for Maternal and Child Health; Izumi, Japan.

A girl with hypomelanosis of Ito was studied both clinically and at postmortem examination. She manifested severe epilepsy early after birth. Magnetic resonance imaging demonstrated left-sided hemimegalencephaly. The seizures were secondarily generalized or unilateral initially, followed by infantile spasms with asymmetrical hypsarrhythmia at 1.5 months of age. Frequent complex partial seizures, refractory to anti-epileptic drug treatments appeared at 4 months of age. She died of pneumonia at the age of 14 months. Postmortem examination revealed marked asymmetry of the cerebrum and gyral abnormalities in the left cerebral hemisphere. Histopathologically, severe disorganization of the neuronal cytoarchitecture was evident. Absence of delineation between cortical gray and white matter was evident, as was increase and hypertrophy of the neurons and glial cells. We believe that the association of skin and brain lesions was not one of chance; that is, they may share a common pathogenetic mechanism.

UI	MeSH Term	Description	Entries
D007223	Infant	A child between 1 and 23 months of age.	Infants
D009457	Neuroglia	The non-neuronal cells of the nervous system. They not only provide physical support, but also respond to injury, regulate the ionic and chemical composition of the extracellular milieu, participate in the BLOOD-BRAIN BARRIER and BLOOD-RETINAL BARRIER, form the myelin insulation of nervous pathways, guide neuronal migration during development, and exchange metabolites with neurons. Neuroglia have high-affinity transmitter uptake systems, voltage-dependent and transmitter-gated ion channels, and can release transmitters, but their role in signaling (as in many other functions) is unclear.	Bergmann Glia,Bergmann Glia Cells,Bergmann Glial Cells,Glia,Glia Cells,Satellite Glia,Satellite Glia Cells,Satellite Glial Cells,Glial Cells,Neuroglial Cells,Bergmann Glia Cell,Bergmann Glial Cell,Cell, Bergmann Glia,Cell, Bergmann Glial,Cell, Glia,Cell, Glial,Cell, Neuroglial,Cell, Satellite Glia,Cell, Satellite Glial,Glia Cell,Glia Cell, Bergmann,Glia Cell, Satellite,Glia, Bergmann,Glia, Satellite,Glial Cell,Glial Cell, Bergmann,Glial Cell, Satellite,Glias,Neuroglial Cell,Neuroglias,Satellite Glia Cell,Satellite Glial Cell,Satellite Glias
D009474	Neurons	The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.	Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D010859	Pigmentation Disorders	Diseases affecting PIGMENTATION, including SKIN PIGMENTATION.	Incontinentia Pigmenti Achromians,Ito Syndrome,Schamberg's Disease,Schamberg Disease,Disease, Schamberg,Disease, Schamberg's,Disorder, Pigmentation,Disorders, Pigmentation,Pigmentation Disorder,Schambergs Disease,Syndrome, Ito
D002540	Cerebral Cortex	The thin layer of GRAY MATTER on the surface of the CEREBRAL HEMISPHERES that develops from the TELENCEPHALON and folds into gyri and sulci. It reaches its highest development in humans and is responsible for intellectual faculties and higher mental functions.	Allocortex,Archipallium,Cortex Cerebri,Cortical Plate,Paleocortex,Periallocortex,Allocortices,Archipalliums,Cerebral Cortices,Cortex Cerebrus,Cortex, Cerebral,Cortical Plates,Paleocortices,Periallocortices,Plate, Cortical
D004292	Dominance, Cerebral	Dominance of one cerebral hemisphere over the other in cerebral functions.	Cerebral Dominance,Hemispheric Specialization,Dominances, Cerebral,Specialization, Hemispheric
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013036	Spasms, Infantile	An epileptic syndrome characterized by the triad of infantile spasms, hypsarrhythmia, and arrest of psychomotor development at seizure onset. The majority present between 3-12 months of age, with spasms consisting of combinations of brief flexor or extensor movements of the head, trunk, and limbs. The condition is divided into two forms: cryptogenic (idiopathic) and symptomatic (secondary to a known disease process such as intrauterine infections; nervous system abnormalities; BRAIN DISEASES, METABOLIC, INBORN; prematurity; perinatal asphyxia; TUBEROUS SCLEROSIS; etc.). (From Menkes, Textbook of Child Neurology, 5th ed, pp744-8)	Cryptogenic Infantile Spasms,Hypsarrhythmia,Infantile Spasms,Jackknife Seizures,Nodding Spasm,Salaam Seizures,Spasmus Nutans,Symptomatic Infantile Spasms,West Syndrome,Cryptogenic West Syndrome,Lightning Attacks,Salaam Attacks,Symptomatic West Syndrome,Attack, Lightning,Attacks, Lightning,Attacks, Salaam,Cryptogenic Infantile Spasm,Hypsarrhythmias,Infantile Spasm,Infantile Spasm, Cryptogenic,Infantile Spasm, Symptomatic,Infantile Spasms, Cryptogenic,Infantile Spasms, Symptomatic,Jackknife Seizure,Lightning Attack,Nodding Spasms,Seizure, Jackknife,Seizures, Jackknife,Seizures, Salaam,Spasm, Cryptogenic Infantile,Spasm, Nodding,Spasm, Symptomatic Infantile,Spasms, Cryptogenic Infantile,Spasms, Nodding,Spasms, Symptomatic Infantile,Symptomatic Infantile Spasm,Syndrome, Cryptogenic West,Syndrome, Symptomatic West,Syndrome, West,West Syndrome, Cryptogenic,West Syndrome, Symptomatic
D017029	Epilepsy, Complex Partial	A disorder characterized by recurrent partial seizures marked by impairment of cognition. During the seizure the individual may experience a wide variety of psychic phenomenon including formed hallucinations, illusions, deja vu, intense emotional feelings, confusion, and spatial disorientation. Focal motor activity, sensory alterations and AUTOMATISM may also occur. Complex partial seizures often originate from foci in one or both temporal lobes. The etiology may be idiopathic (cryptogenic partial complex epilepsy) or occur as a secondary manifestation of a focal cortical lesion (symptomatic partial complex epilepsy). (From Adams et al., Principles of Neurology, 6th ed, pp317-8)	Complex Partial Epilepsy,Complex Partial Seizure Disorder,Cryptogenic Partial Complex Epilepsy,Disorder, Complex Partial Seizures,Epilepsy, Cryptogenic, Partial Complex,Epilepsy, Psychic Equivalent,Epilepsy, Psychomotor,Epilepsy, Symptomatic, Partial Complex,Partial Complex Epilepsy, Cryptogenic,Partial Complex Epilepsy, Symptomatic,Seizure Disorder, Complex Partial,Symptomatic Partial Complex Epilepsy,Partial Epilepsy, Complex,Psychic Equivalent Epilepsy,Psychomotor Epilepsy