Description Treatment Prognosis Research

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Description Treatment Prognosis Research

Description Porencephaly is an extremely rare disorder of the central nervous system in which a cyst or cavity filled with cerebrospinal fluid develops in the brain. It is usually the result of damage from stroke or infection after birth (the more common type), but it can also be caused by abnormal development before birth (which is inherited and less common). Diagnosis is usually made before an infant reaches his or her first birthday. Symptoms of porencephaly include delayed growth and development, spastic hemiplegia (slight or incomplete paralysis), hypotonia (low muscle tone), seizures (often infantile spasms), and macrocephaly (large head) or microcephaly (small head). Children with porencephaly may have poor or absent speech development, epilepsy, hydrocephalus (accumulation of fluid in the brain), spastic contractures (shrinkage or shortening of the muscles), and cognitive impairment. Treatment Treatment may include physical therapy, medication for seizures, and the placement of a shunt in the brain to remove excess fluid in the brain. Prognosis The prognosis for children with porencephaly varies according to the location and extent of the cysts or cavities. Some children with this disorder develop only minor neurological problems and have normal intelligence, while others may be severely disabled and die before their second decade of life. Research The National Institute of Neurological Disorders and Stroke (NINDS) and other institutes of the National Institutes of Health (NIH) conduct research related to porencephaly in laboratories at the NIH and also support additional research through grants to major medical institutions across the country. Much of this research explores the complex mechanisms of normal brain development. The knowledge gained from these fundamental studies will provide a foundation for developing ways to prevent porecephaly and the other cephalic disorders. Information from the National Library of Medicine’s MedlinePlus Brain Diseases BACK TO Disorders List.

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Congenital Externally Communicating Porencephaly Presenting As Hemiplegic Cerebral Palsy: Imaging Study of a Rare Condition
SunKrist Journal of Neonatology and Pediatrics Case Presentation Volume: 3, Issue: 1 Scientific Knowledge Congenital Externally Communicating Porencephaly Presenting as Hemiplegic Cerebral Palsy: Imaging Study of a Rare Condition Al-Mosawi AJ1,2* 1Department of Pediatrics and Pediatric Psychiatry, Children Teaching Hospital of Baghdad Medical City, Iraq 2Head, Iraq Headquarter of Copernicus Scientists International Panel, Iraq 1. Abstract presentation including asymptomatic, various forms Congenital porencephaly is a very rare condition of cerebral palsy, seizures and cognitive impairment. characterized by cystic degeneration The disorder is heterogeneous in nature and the brain encephalomalacia and cysts or cavities within the lesions can be caused by developmental brain. Porencephalic cysts have a variable size and abnormalities, infection, perinatal brain ischemia, site and therefore it result in a variable clinical trauma and hemorrhage. Genetic factors have been presentations including asymptomatic, various forms suggested and familial cases have been reported. of cerebral palsy, seizures and cognitive impairment. Congenital porencephaly is generally classified into, The disorder is heterogeneous in nature and the brain internally communicating with the ventricle and lesions can be caused by developmental externally communicating with the subarachnoid abnormalities, infection, perinatal brain ischemia, space [1-7]. The aim of this paper is to report the rare trauma and hemorrhage. Genetic factors have been finding of externally communicating porencephaly in suggested and familial cases have been reported. a child with hemiplegic cerebral palsy. Congenital porencephaly is generally classified into, 4. Patients and Methods internally communicating with the ventricle and The case of a five-year old girl with hemiplegic externally communicating with the subarachnoid cerebral palsy caused by porencephaly is described space.
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Porencephaly Diagnosed by Isotope Cisternography
Journal of Neurology, Neurosurgery, and Psychiatry, 1972, 35, 669-675 J Neurol Neurosurg Psychiatry: first published as 10.1136/jnnp.35.5.669 on 1 October 1972. Downloaded from Porencephaly diagnosed by isotope cisternography D. FRONT, J. W. F. BEKS, AND L. PENNING' From the Departments of Neuroradiology and Neurosurgery, University Hospital, Gronintgen, The Netherlands SUMMARY The diagnosis of porencephaly by isotope cisternography is described. In the three cases presented, porencephaly was associated with non-resorptive hydrocephalus. The communi- cating hydrocephalus caused the isotope to enter the ventricular system and visualize the cyst, and the diagnosis of both disorders was established by RIHSA cisternography. The method is simple and non-traumatic and provides information about abnormalities which air may fail to demonstrate. Isotope cisternography has proved to be very plane of the collimator than does the gamma camera. useful in the diagnosis of disturbances of flow Every patient is studied at four, 24, and 48 hours and absorption of cerebrospinal fluid (CSF) and after injection. their resultant hydrocephalus (Di Chiro, Reames, and Matthews, 1964; Bannister, Gliford, and CASE 1 and Protected by copyright. Kocen, 1967; James, DeLand, Hodges, Wag- A 39 year old man suffered a head injury in a road ner, 1970; Front, 1971), and in the recognition of accident. Bleeding was noticed from his nose and CSF rhinorrhoea (Di Chiro and Grove, 1966; mouth but no abnormality was found on neurologi- Di Chiro, Ommaya, Ashburn, and Briner, 1968; cal examination. Plain radiographs of the skull Front and Penning, 1971). showed fractures of the nasal, right maxillary, and In addition, we have found this investigation zygomatic bones.
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CONGENITAL ABNORMALITIES of the CENTRAL NERVOUS SYSTEM Christopher Verity, Helen Firth, Charles Ffrench-Constant *I3
J Neurol Neurosurg Psychiatry: first published as 10.1136/jnnp.74.suppl_1.i3 on 1 March 2003. Downloaded from CONGENITAL ABNORMALITIES OF THE CENTRAL NERVOUS SYSTEM Christopher Verity, Helen Firth, Charles ffrench-Constant *i3 J Neurol Neurosurg Psychiatry 2003;74(Suppl I):i3–i8 dvances in genetics and molecular biology have led to a better understanding of the control of central nervous system (CNS) development. It is possible to classify CNS abnormalities Aaccording to the developmental stages at which they occur, as is shown below. The careful assessment of patients with these abnormalities is important in order to provide an accurate prog- nosis and genetic counselling. c NORMAL DEVELOPMENT OF THE CNS Before we review the various abnormalities that can affect the CNS, a brief overview of the normal development of the CNS is appropriate. c Induction—After development of the three cell layers of the early embryo (ectoderm, mesoderm, and endoderm), the underlying mesoderm (the “inducer”) sends signals to a region of the ecto- derm (the “induced tissue”), instructing it to develop into neural tissue. c Neural tube formation—The neural ectoderm folds to form a tube, which runs for most of the length of the embryo. c Regionalisation and specification—Specification of different regions and individual cells within the neural tube occurs in both the rostral/caudal and dorsal/ventral axis. The three basic regions of copyright. the CNS (forebrain, midbrain, and hindbrain) develop at the rostral end of the tube, with the spinal cord more caudally. Within the developing spinal cord specification of the different popu- lations of neural precursors (neural crest, sensory neurones, interneurones, glial cells, and motor neurones) is observed in progressively more ventral locations.
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Neonatal Porencephaly and Adult Stroke Related to Mutations in Collagen IV A1
Neonatal Porencephaly and Adult Stroke Related to Mutations in Collagen IV A1 Marjo S. van der Knaap, MD, PhD,1 Leo M. E. Smit, MD, PhD,1 Frederik Barkhof, MD, PhD,2 Yolande A. L. Pijnenburg, MD,3 Sonja Zweegman, MD, PhD,4 Hans W. M. Niessen, MD, PhD,5 Saskia Imhof, MD, PhD,6 and Peter Heutink, PhD7 Objective: The objective of this study was to describe leukoencephalopathy, lacunar infarcts, microbleeds and macro- bleeds in the context of a collagen IV A1 mutation. Methods: We examined a family with autosomal dominant poren- cephaly, in whom a defect in collagen IV A1 was detected recently. The patients underwent neurological, ophthalmo- logical, and cardiological examinations and magnetic resonance imaging of the brain. Electron microscopy of a skin biopsy was performed. Extensive laboratory screening was performed for thrombophilia and increased bleeding tendency. Results: The porencephaly was symptomatic in the infantile period in two patients, whereas it led to only minor neu- rological dysfunction in their affected mother. However, she experienced development of recurrent strokes in her 40s. In addition to the porencephaly, all patients had a leukoencephalopathy, which was most severe in the mother. Her mag- netic resonance imaging results also showed lacunar infarcts, macrobleeds and a multitude of microbleeds. No other risk factors for recurrent stroke were found. Electron microscopy showed interruptions of the basement membrane of skin capillaries and inhomogeneous thickening of the basement membrane with pools of basement membrane fragments. Interpretation: Leukoencephalopathy, ischemic infarcts, microbleeds, and macrobleeds are indicative of an underlying microangiopathy, of which the best-known causes are hypertension, cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, and cerebral amyloid angiopathy.
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Lack of Serologic Evidence for an Association Between Cache Valley Virus Infection and Anencephaly and Other Neural Tube Defects in Texas
Dispatches Lack of Serologic Evidence for an Association between Cache Valley Virus Infection and Anencephaly and other Neural Tube Defects in Texas We tested the hypothesis that Cache Valley Virus (CVV), an endemic North American bunyavirus, may be involved in the pathogenesis of human neural tube defects. This investigation followed a 1990 and 1991 south Texas outbreak of neural tube defects with a high prevalence of anencephaly and the demonstration in 1987 that in utero infection by CVV was the cause of outbreaks of central nervous system and musculoskeletal defects in North American ruminants. Sera from 74 women who gave birth to infants with neural tube defects in south Texas from 1993 through early 1995 were tested for CVV neutralizing antibody. All tested sera did not neutralize CVV. These data suggest that CVV is not involved in the induction of human neural tube defects during nonepidemic periods but do not preclude CVV involvement during epidemics. Other endemic bunyaviruses may still be involved in the pathogenesis of neural tube defects or other congenital central nervous system or musculoskeletal malformations. Anencephaly, spina bifida, and encephalocele showed that in south Texas during this period the (the major types of neural tube defects) are average annual prevalence of anencephaly was generally due to the failure of the neural tube to approximately 4.9 per 10,000 births. Women with close during early embryonic development (1). Hispanic surnames, three or more previous live Neural tube defects are among the most common births, history of stillbirth, or residence in east or and most severe major birth defects.
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Chapter III: Case Definition
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Syndromes, Disorders and Maternal Risk Factors Associated with Neural Tube Defects (Vii)
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Left Cerebellar Porencephalic Cysts with Ipsilateral Parieto- Occipital Encephalocoele: Antenal and Post Natal Radiology
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) e-ISSN: 2279-0853, p-ISSN: 2279-0861.Volume 17, Issue 8 Ver. 9 (August. 2018), PP 82-87 www.iosrjournals.org Left Cerebellar Porencephalic Cysts with Ipsilateral Parieto- Occipital Encephalocoele: Antenal and Post Natal Radiology *Grace B. Inah* Nchiewe E. Ani +Gbenga Kajogbola *Department Of Radiology, University Of Calabar Teaching Hospital, Calabar, Nigeria. +Asi-Ukpo Radiodiagnostic Centre, Calabar, Nigeria. Corresponding Author: Dr. Grace B. Inah Abstract: Porencephalic cyst is a rare congenital disorder which may cause a wide range of physiological, physical and neurological symptoms. We present a case of three months old female child diagnosed in utero via sonography and perinatally using Magnetic Resonance Imaging (MRI) as a case of Porencephalic cyst associated with encaphalocoele. The mother presented at the Radiology Department of the University of Calabar Teaching Hospital for routine obstetrics scan at 40 weeks of gestation had a caesarean section at 40 weeks of gestation and was delivered of a live female neonate with APGAR Score of 8, body weight of 4.4kg and no obvious neurological deficits seen. Postnatal MRI of the baby on the 4th day of life also showed a dilated cystic partial replacement of the left cerebellar hemisphere with herniation of the same through a left parieto-occipital defect communicating with the 4th ventricle and pre-pontine cistern. The existence of porencephaly with associated encaphalocoele is rare and an extensive literature search revealed no previous case report as depicted in this report, hence the need to highlight the role of radiology in the diagnosis.
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Fetal Neuroimaging
Fetal and Maternal Medicine Review 2008; 19:1 1–31 C 2008 Cambridge University Press doi:10.1017/S0965539508002106 FETAL NEUROIMAGING 1R.K. POOH AND 2 K.H. POOH 1CRIFM Clinical Research Institute of Fetal Medicine PMC, Osaka, Japan. 2Department of Neurosurgery, Kagawa National Children’s Hospital, Kagawa, Japan. INTRODUCTION Imaging technologies have been remarkably improved and contribute to prenatal evaluation of fetal central nervous system (CNS) development and assessment of CNS abnormalities in utero. Conventional transabdominal ultrasonography, by which it is possible to observe fetuses through the maternal abdominal wall, uterine wall and sometimes placenta, has been most widely utilized for antenatal imaging. By the transabdominal approach, the whole CNS of the fetus can be well demonstrated, for instance, the brain in the axial section and the spine in the sagittal section. However, tissues between the ultrasound probe and the fetus, such as the maternal abdominal wall, placenta and fetal cranial bones, may at times pose significant obstacles to the ultrasound signals and therefore make it difficult to obtain clear and detailed images of the fetal CNS structure. The introduction of high-frequency transvaginal transducers have contributed to the development of “sonoembryology”1 and recent liberal use of transvaginal sonography in early pregnancy has enabled early diagnoses of major fetal anomalies.2 The brain is a three-dimensional structure, and should be assessed in sagittal, coronal and axial planes. Sonographic assessment of the fetal brain in the sagittal and coronal sections requires an approach through the anterior/posterior fontanelle and/or the sagittal suture. Transvaginal sonography of the fetal brain opened a new field in medicine, “neurosonography”.3 Application to the normal fetal brain during the second and third trimesters was introduced in the beginning of 1990s.
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Biallelic Variants in the COLGALT1 Gene Causes Severe Congenital Porencephaly a Case Report
ARTICLE OPEN ACCESS Biallelic Variants in the COLGALT1 Gene Causes Severe Congenital Porencephaly A Case Report Mariel W.A. Teunissen, MD, Erik-Jan Kamsteeg, PhD, Suzanne C.E.H. Sallevelt, MD, PhD, Maartje Pennings, Correspondence Noel J.C. Bauer, MD, PhD, R. Jeroen Vermeulen, MD, PhD, and Joost Nicolai, MD, PhD Dr. Nicolai [email protected] Neurol Genet 2021;7:e564. doi:10.1212/NXG.0000000000000564 Abstract Objective We describe a third patient with brain small vessel disease 3 (BSVD3), being the ﬁrst with a homozygous essential splice site variant in the COLGALT1 gene, with a more severe phenotype than the 2 children reported earlier. Methods Analysis of whole exome sequencing (WES) data of the child and parents was performed. We validated the missplicing of the homozygous variant using reverse transcription PCR and Sanger sequencing of the mRNA in a lymphocyte culture. Results The patient presented antenatally with porencephaly on ultrasound and MRI. Postnatally, he showed a severe developmental delay, refractory epilepsy, spastic quadriplegia, and a pro- gressive hydrocephalus. WES revealed a homozygous canonical splice site variant NM_ 024656.3:c.625-2A>C. PCR and Sanger sequencing of the mRNA demonstrated that 2 cryptic splice sites are activated, causing a frameshift in the major transcript and in-frame deletion in a minor transcript. Conclusions We report a third patient with biallelic pathogenic variants in COLGALT1, conﬁrming the role of this gene in autosomal recessive BSVD3. From the Department of Neurology (M.W.A.T., R.J.V., J.N.), Maastricht University Medical Center+; Department of Human Genetics (E.-J.-K., M.P.), Radboud University Medical Center, Nijmegen; and Department of Human Genetics (S.C.E.H.S.), and University Eye Clinic Maastricht (N.J.C.B.), Maastricht University Medical Center+, the Netherlands.
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The Expanding Phenotype of COL4A1 and COL4A2 Mutations: Clinical Data on 13 Newly Identified Families and a Review of the Literature
© American College of Medical Genetics and Genomics REVIEW The expanding phenotype of COL4A1 and COL4A2 mutations: clinical data on 13 newly identified families and a review of the literature Marije E.C. Meuwissen, MD, PhD1,2, Dicky J.J. Halley, PhD1, Liesbeth S. Smit, MD3, Maarten H. Lequin, MD, PhD4, Jan M. Cobben, MD, PhD5, René de Coo, MD, PhD3, Jeske van Harssel, MD6, Suzanne Sallevelt, MD7, Gwendolyn Woldringh, MD, PhD8, Marjo S. van der Knaap, MD, PhD9, Linda S. de Vries, MD, PhD10 and Grazia M.S. Mancini, MD, PhD1 Two proα1(IV) chains, encoded by COL4A1, form trimers that children with porencephaly or other patterns of parenchymal hemor- contain, in addition, a proα2(IV) chain encoded by COL4A2 and rhage, with a high de novo mutation rate of 40% (10/24). The obser- are the major component of the basement membrane in many tis- vations in 13 novel families harboring either COL4A1 or COL4A2 sues. Since 2005, COL4A1 mutations have been known as an auto- mutations prompted us to review the clinical spectrum. We observed somal dominant cause of hereditary porencephaly. COL4A1 and recognizable phenotypic patterns and propose a screening protocol COL4A2 mutations have been reported with a broader spectrum at diagnosis. Our data underscore the importance of COL4A1 and of cerebrovascular, renal, ophthalmological, cardiac, and muscular COL4A2 mutations in cerebrovascular disease, also in sporadic abnormalities, indicated as “COL4A1 mutation–related disorders.” patients. Follow-up data on symptomatic and asymptomatic muta- Genetic counseling is challenging because of broad phenotypic varia- tion carriers are needed for prognosis and appropriate surveillance.
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Familial Porencephaly
Familial porencephaly Authors: Dr Nicole Van Regemorter and Dr Patrick Van Bogaert * * Corresponding author: [email protected] Department of Pediatric Neurology, ULB-Hôpital Erasme, 808 route de Lennik, B-1070 Brussels, Belgium. Section Editor: Dr Enrico Bertini Creation Date: December 2003 Update: April 2006 Abstract Key words Disease name Definition Excluded diseases Epidemiology Clinical description Diagnostic methods Etiology Genetic counseling Antenatal diagnosis Management including treatment Prognosis References Abstract Porencephaly is a circumscribed intracerebral cavity of variable size which may be bordered by abnormal polymicrogyric grey matter. In extreme cases, this cavity may result in a communication between the pial surface and the ventricle; this is termed schizencephaly. The disease typically manifests in infants. The clinical manifestations of porencephaly depend on the location and the size of the lesion. Hemiplegic cerebral palsy is the commonest feature. Mental retardation and epilepsy are frequently found. According to their topography, which usually corresponds to territories supplied by cerebral arteries, porencephaly (like schizencephaly and polymicrogyria) is thought to result from an ischemic injury, occurring at mid-gestation. Most cases are sporadic. However, some observations of familial recurrences have been reported, suggesting that genetic factors could be involved. Search for mutations leading to a hypercoagulable state is under investigation. Recently, mutations in the COL4A1 gene have been described in four of the already published families with porencephaly and in one new unrelated family Familial porencephaly is a very rare condition usually transmitted as an autosomal dominant trait with incomplete penetrance. There is no specific treatment. Symptomatic treatment includes physical therapy, anti-epileptic drugs if epilepsy, and shunting procedures for treatment of hydrocephaly.
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