Callosal anomalies with interhemispheric cyst: expanding the phenotype

AIM

To determine the frequency and clinical features of corpus callosum hypoagenesis, dysgenesis or hypoplasia in conjunction with extraparenchymal interhemispheric cyst.

METHODS

A retrospective study of clinical files and imaging records of all 2500 children referred to the University Department of Paediatrics, Catania, Italy, who underwent neuroimaging by ultrasound, computerized tomography or magnetic resonance imaging in 1992-2003. Five children (all girls, aged 2-18 y) were found to have abnormalities of the corpus callosum associated with interhemispheric cyst.

RESULTS

Three cases were type 2b, one type 2c and one mixed type 2b and 2c according to the classification proposed by Barkovich et al. The onset of clinical symptoms was very early, with severe neurological involvement, seizures that were difficult to treat and profound psychomotor retardation.

CONCLUSIONS

In callosal anomalies with cysts, a prevalence in females is not confined to type 2b cysts, the spectrum of abnormalities of the corpus callosum is more varied than previously recorded, and the natural history and outcome of the condition are poor with profound developmental delay and drug-resistant seizures. The finding that all the cases were of type 2 suggests that the overall phenotype is more widespread than previously thought and may present in association with other complex syndromes.

Epilepsy is not a prominent feature of primary autism

The authors report on a series of 72 patients (57 male, 15 female; aged from 4 to 21 years) affected by autism with the aim of evaluate their experience regarding the prevalence of seizure and/or epilepsy. Patients were divided into two groups: the first includes individuals (n = 54) affected by so-called idiopathic or primary autism which was further subdivided according to the grade of mental retardation (MR) and the second (n = 18) in which a known pathological event was associated to the autism (secondary autism). According to these results in the first group 12 % of autistic patients with moderate MR (i.e., IQ > 55) suffered from seizures but in three patients (9 %) they were occasional and only in one recurrent (i.e., epileptic) (3 %). Autistic patients with severe MR (i.e., IQ < 55) suffered from seizures in 20 % of the cases: in three the episodes were recurrent (15 %) and in one occasional (5 %). In the second group in which autism was associated to other morbidities 61 % (n = 11/18) had seizures, being recurrent in 10 (55 %). According to this series, in autism the risk of epilepsy is higher compared to the general population but it does not seem to be correlated to the autism itself, but rather to the associated co-morbidities and underlying brain dysfunction (overall prevalence of epilepsy in primary autism [4/54 or 7.4 %] vs. secondary autism [10/18 or 55 %]).

Anti-brain antibodies in PANDAS versus uncomplicated streptococcal infection

The objective of this study was to assess brain involvement through the presence of antineuronal antibodies in Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus (PANDAS) and in uncomplicated active Group A streptococcal infection. We compared serum antibrain antibody to human basal ganglia sections assessed by indirect tissue immunofluorescence in two groups: a PANDAS group, comprised of 22 patients (mean age 10.1 years; 20 male, 2 female) who met strict National Institutes of Mental Health diagnostic criteria for PANDAS and had clinically active tics or obsessive-compulsive disorder, or both; and a GABHS control group consisting of 22 patients (mean age 9.1 years; 15 mol/L, 7 female) with clinical evidence of active Group A beta-hemolytic streptococcal (GABHS) infection confirmed by throat culture and elevated antistreptolysin O titers but without history or clinical evidence of tics or obsessive-compulsive disorder. We observed positive anti-basal ganglia staining (defined as detectable staining at 1:10 serum dilution) in 14/22 patients in the PANDAS group (64%) but only 2/22 (9%) in the GABHS control group (P < 0.001, Fisher's exact test). These results suggest that antibrain antibodies are present in children with PANDAS that cannot be explained merely by a history of GABHS infection.

Epilepsy in fragile X syndrome

The occurrence of seizures in patients with fragile X syndrome (Fra-X) is reported. Among the 30 patients, six had epilepsy that was particularly severe and two also showed atypical facial dysmorphism that was different from that seen in classical Fra-X. From the study performed in this series of Fra-X patients the authors arrived at the following conclusions. (1) The occurrence of seizures in Fra-X population is around 20%, as reported in the literature. (2) The EEG pattern of benign childhood epilepsy with central-temporal spikes (BCECTS) was found in only three patients (10%). (3) According to the pattern of seizures and EEGs, four groups may be recognizable, the less frequent being the uncommon group characterized by severe epilepsy unresponsive to treatment. (4) In this group atypical facial dysmorphism (although not similar in the two patients and different from the classical facial pattern of Fra-X) was found. The authors maintain that additional genetic factors might influence the clinical course and neurological aspects of Fra-X syndrome.

Clinical heterogeneity in eyelid myoclonia, with absences, and epilepsy

Eyelid myoclonia with absences should always be considered in the investigation of children with epilepsy.

[Neonatal thrombosis of the middle cerebral artery. Three clinical cases with a 24-month follow up]

Three patients with neonatal thrombosis of the middle cerebral artery are described. In two patients the thrombosis was secondary to neonatal asphyxia. The third patient had a porencephalic cyst twenty days after birth suggesting a prenatal origin of the thrombotic event. The follow-up was carried out for two years. In the first year, two patients had infantile spasms and hyparrhythmic pattern of EEG. This type of epilepsy has never been previously reported. Futhermore, all three patients presented hemiplegia and reduction of cranial circumference. The neuroradiologic procedures showed to be very useful for the diagnosis and long term follow-up. These patients must be followed carefully since the development of a subsequent epilepsy is reported to be approx 11%.

Neuropsychological assessment in children with absence epilepsy

OBJECTIVE

To define cognitive deficits in children with absence epilepsy.

BACKGROUND

Cognitive deficits have often been reported in children with epilepsy, but have rarely been characterized in patients with a specific epileptic syndrome.

METHODS

Detailed neuropsychological testing was carried out on 16 right-handed children with absence epilepsy with similar clinical and EEG findings, and the findings were compared to 16 well-matched right-handed children without absence epilepsy.

RESULTS

The authors found lower scores of measures of general cognitive functioning and visuospatial skills in patients with absence epilepsy, as compared to controls. Memory disturbances were also detected in absence epilepsy patients, with selective involvement of nonverbal memory and delayed recall. In contrast, verbal memory and language skills were relatively preserved. Patients whose seizures began at an earlier age seemed to have more severe cognitive deficits.

CONCLUSION

Language skills tend to be relatively well preserved in children with generalized epilepsy, with more dysfunction seen in global terms rather than specific lateralizing deficits. Patients with absence epilepsy seem to show a similar neurocognitive profile that may be a reflection of the underlying epilepsy syndrome.

Lack of progression of brain atrophy in Aicardi-Goutières syndrome

Aicardi-Goutières syndrome is a severe and progressive familial encephalopathy that is characterized by acquired microcephaly, intracranial calcification (mainly of the basal ganglia), signs of white matter disease, and chronic lymphocytosis with elevated levels of interferon-alpha in the cerebrospinal fluid in the absence of other evidence of infection. Although the degree of calcification and the severity of brain atrophy are variable, typically the brain lesions appear to progress on successive examinations. In this article a 4-year-old male patient with Aicardi-Goutières syndrome who manifested the typical neurologic signs of the disease was re-evaluated. The evaluation revealed, on successive cranial computed tomography and magnetic resonance imaging scans, increasing calcification with remarkable reduction of brain atrophy. To the best of our knowledge, there is only one previously mentioned study of a 4-year-old female patient with progressive features of Aicardi-Goutières syndrome, including intracranial calcification, who displayed a lack of progression of brain atrophy at MRI scan.

[Headache as atypical presentation of celiac disease: report of a clinical case]

Coeliac disease (CD) is a gluten dependent enteropathy with genetic predisposition. The introduction of the gluten with the diet leads to a damage of the intestinal mucosa losing the ability of absorption. Together with the "classic forms", in wich the intestinal symptomatology is prevalent, there are atypical forms, with unusual clinical presentation and silent forms with no clinical symptoms. The neurologic symptoms are not frequent and regard seizures, headache, ataxia and psychiatric problems. We report on a patient with headache since 3 years of age in which the headache the only manifestation of CD. The diagnosis of CD was made at 11 years, when he came at our observation for episodes of headache. Also the older sister is found affected by CD. After three months of gluten free diet, it was obtained the complete resolution of the headache. Also if the pathogenesis of the headache in patient with CD is unknown we think that a autoimmune, vascular or blood flow mechanism could be ipotizeable.

Dystonia as acute adverse reaction to cough suppressant in a 3-year-old girl

Cough suppressant preparations containing mixtures of dextromethorphan or codeine with antihistamines, decongestants (sympathomimetic), expectorants and antipyretics with either sedative or anticholinergic activity have been associated with dystonic reactions in children. We report on a 3-year-old girl who presented with episodic stiffness and abnormal posturing with rigidity after arbitrary maternal administration of a mixture of methylcodeine and extract from Hedera plant.

Pallister-Killian syndrome: case report with pineal tumor

Pallister-Killian syndrome, an aneuploidy syndrome, comprises a characteristic facial appearance, mental retardation, and multiple other anomalies. It is caused by mosaicism with a supernumerary isochromosome 12p. This chromosomal abnormality has been reported also in human germ cell tumors. We report on a 15-year-old girl with Pallister-Killian syndrome and pineal tumor.

[Infantile spasms: clinical course]

The authors report on the factor which interferes on follow-up of children affected by infantile spasm. On the basis of their series and on the data of literature the factor more indicative for the clinical evolution are: type and dosage of treatment, onset early or delayed, and the aetiology. While for the first two factors the opinion of the expert are remarkable discordant, there is a general agreement that the evolution of infantile spasm is mainly based on the causes determining such kind of epilepsy.

Vein of Galen aneurysmal malformation. Different clinical expressiveness. Three case reports

The vein of Galen aneurysmal malformation (VGAM) is a rare cerebro-vascular disorder in neonates. It is characterized by an abnormal direct communication between one or several cerebral arteries and the vein of Galen. It may appear in the neonatal period or afterwards. Three cases of patients affected by VGAM with different clinical expression are presented. Two of them were treated successfully with endovascular embolization. It was not possible to provide the same treatment to the third patient for an intractable congestive heart failure already existing when VGAM was diagnosed.

Late primary unilateral thalamic hemorrhage in infancy: report of two cases

We report on two infants with primary unilateral thalamic hemorrhage which occurred at two months of age. Both infants were normal prior to the onset of hemorrhage. Both children presented with seizures and subsequently developed epilepsy. These cases suggest that primary unilateral thalamic hemorrhage can occur in seemingly well infants outside the neonatal period.

Vein of Galen malformation and infantile spasms

Recently, there has been increasing interest in the study, characterization, and management of infantile spasms. With technological advances, it is now possible to determine a specific diagnosis on many patients with infantile spasms, thus broadening the spectrum of conditions associated with this electroclinical syndrome. We report a child with infantile spasms who also had a vascular malformation of the vein of Galen. Both clinical and electroencephalographic findings improved rapidly after endovascular treatment of the vascular anomaly, suggesting a possible association.

Focal neurological deficits in children with beta-thalassemia major

The hematologic disorder beta-thalassemia major is relatively common in Southern Italy. Stroke is a well described, though infrequently reported, complication of this disorder. We now report our experience regarding 300 children with beta-thalassemia major examined at the University of Catania, Italy, over a 20-year period. We encountered 9 patients (3%; 3 males, 6 females) with beta-thalassemia major who had hemorrhagic stroke. Two groups of patients can be identified: group 1 (2 patients 22%) with early-onset post-transfusion hemorrhage and group 2 (7 patients 77%) with delayed post-transfusion hemorrhage. In the first group, the hemorrhage occurred within 48 hours following blood transfusion. In the second group, hemorrhage occurred 7-15 days from last transfusion. In 5 patients out of 7 of this second group the first transfusion and ictal event both occurred after age five, suggesting prolonged chronic anemia might play a role in the hemorrhage.

[Sandifer's syndrome: a rare form of torticollis in childhood. A report of a patient]

Sandifer syndrome is an uncommon clinical entity characterized by gastroesophageal reflux, torticollis and paroxysmal dystonic postures. For the wide variability in clinical expression it is diagnosed as neurological disease. We report on a 3-year-old patient who presented sudden extensions of the head and neck with tilting of the head one side and severe arching of the spine. It is presented a review of the related literature.

Neurological complications in hospitalized patients with pertussis: a 15-year Sicilian experience

Three hundred forty patients were diagnosed with pertussis infection at the Pediatric Clinic of the University of Catania, Sicily during the period 1979-1994. None of these patients had been previously vaccinated. Fourteen developed neurological complications at some point in their course, which took the form of seizures (both febrile and afebrile) and, in some cases, encephalopathy. Serious permanent neurological sequelae were not observed in this series of patients though they had pertussis severe enough to require hospitalization.

Delayed bilateral median nerve injury due to low-tension electric current

A 6-year-old boy inserted an opened metal clip into a domestic electric outlet using the thumb and index fingers of both hands. He suffered low tension electrical shock with mild cutaneous signs. After a few weeks, he developed bilateral numbness and weakness of both hands. Electrophysiologic studies revealed bilateral median nerve sensorimotor axonal loss. Low tension electric shock could have produced delayed bilateral median nerve damage indirectly via spasm and thermal coagulation of the vasa nervorum. The pinching position of the fingers, the "circuit" of the metal clip, and the low resistance due to the thinness and moistness of child's skin may account for: 1) the absence of an electrical cutaneous burn and 2) easy volume conduction of current along the neurovascular bundle containing the median nerve.

Myotonic dystrophy in a large Sicilian kinship: a case report

A large Sicilian kinship in which myotonic dystrophy (DM) affected spanning four generations is presented. The pedigree clearly illustrates the phenomenon of anticipation, and illustrates that this phenomenon is more marked when transmission occurs through an affected female rather than an affected male. The pedigree is interpreted in light of recent genetic advances in DM. Neurosurgeons and neurologists should consider a diagnosis of DM when asked to evaluate a floppy infant with enlarged lateral ventricles, and should be aware of special features regarding its inheritance pattern.

Aicardi syndrome with multiple tumors: a case report with literature review

A 5-year-old girl with Aicardi syndrome, choroid plexus papilloma and multiple gastric hyperplastic polyps is reported. Gastric polyposis is unusual in the pediatric age group and has not previously been reported in a patient with Aicardi syndrome. A variety of uncommon benign and malignant tumors have been associated with Aicardi syndrome; this literature is briefly reviewed. The increased frequency of tumors in Aicardi syndrome should be kept in mind when evaluating these patients.

Multicenter study of childhood headache

This multicenter study reports the results obtained between 1990 and 1991 by the Study Group for Childhood Headache of the Italian Neuropediatric Society. Standardized computerized case sheets were used in order to increase the number of young patients studied and obtain more homogeneous results. A clinical diagnosis of headache was made in 600 patients (314 female and 286 male) between 4 and 12 years of age, in accordance with the classification set down by the International Headache Society. Clinical symptoms and follow-up were more severe in children with migraine as opposed to headache. No sequence of associated neurological and neurovegetative symptoms was observed at onset of headache, and some (phono-photophobia, pallor, drowsiness, abdominal pains) were much more prevalent than others. Because of the patient's age we studied only the treatment of acute attack and did not take account of chronic treatment. In childhood the clinical course of primary headache tends to improve spontaneously, and we believe that prevention of headache attacks should be carried out only in very rare individual cases.