Child Neurology HY Flashcards
Anterior neuropore fusion defects
anencephaly, encephalocele
Posterior neuropore fusion defects
spina bifida, myelomeningocele
Tells notochord to become mesoderm
sonic hedgehog
Signal for lateral epidermal ectoderm
bone morphogenic proteins
Risk factors for NTDs (4)
folate def, DM, AEDs, vitamin A toxicity
cell of origin of CNS
ectoderm from neural tube
cell of origin of PNS
ectoderm from neural crest cells
cell of origin of vertebral bodies
mesoderm of notochord
balloon cells
focal cortical dysplasia
reduced visual acuity , panhypopituitarism , absent septum pellucidum
septo-optic dysplasia
smooth brain small chin thin upper lip, intractable seizures
lissencephaly type I, Miller-dieker, LIS1 gene on chrom 17 disorder of microtubules and dynein
smooth brain in males, double brain in females
DCX gene (doublecortin) x-linked
Three disorders with cobblestone cortical malformations
Walker-Warburg, Fukuyama MD, muscle-eye-brain disease
Molar tooth sign
Joubert syndrome, cerebellar hypoplasia
childhood obesity and intellectual disability
prader-willi, laurence-moon
inappropriate laughter, arm flapping, MRDD, seizures, prominent jaw
Angelman’s
Genetics of Prader-willi and Angelmans
both chrom 15 (Prader-Paternal and angelmans mAternal inheritance)
Developmental regression 6-18mos with hand wringing and microcephaly
Rett’s, MECP2
Cafe au lait
NF 1
shagreen patch
Tuberous-Sclerosis
Gene/chrom for NF 1
Neurofibromin chrom 17
NF2 gene/chrom
Merlin chrom 22
axillary/inguinal freckles
NF1
Lisch’s nodules
iris hamartomas NF1
Subependymal giant cell astrocytoma
Tuberous Sclerosis
Sphenoid wing dysplasia
NF1
Ashleaf spots
Tuberous Sclerosis
Intellectual disability, large testes, protuberant ears
Fragile X, CGG
Lymphangiomyomatosis
Tuberous Sclerosis females>males
Treatment for hamartomas
rapamycin
multiple AVMs intracranially
Osler-weber-Rendu, Hereditary Hemorrhagic telangiectasia
hypopigmented streaks that follow skin lines
qhypomelanosis of Ito
dental enamel pits
Tuberous sclerosis
hyperpigmented cutaneous lesions and leptomeningeal melanoma
neurocutaneous melanosis
Hemifacial atrophy
Parry-romberg syndrome
multiple endochondromas and secondary hemangiomas
maffucci’s syndrome
VHL
chrom 3, AD, hemangioblastomas
x-linked Dominant disease that has nonspecific neurocutaneous findings
Incontinentia pigmenti, MEMO
hypersensitivity to light with freckles, multiple malignancies, neuropathy, ataxia, cognitive decline
Xeroderma pigmentosa, DNA repair
brittle hair, ilateral subdural hematomas, MRDD
Menkes: ATP7A mutation (bonus what is ATP7B ??)
epileptic encephalopathy and hypoglycorrhachia
GLUT 1 , SLC2A1 gene, DeVivo syndrome
Inverted nipples, prominent fat pads, low carbs in CSF, devo delay and dysmorphic facies
Congenital disorders of glycosylation
urine with musty order
PKU
Homocystinuria
CYSTthionine-beta-synthetase def
Accumulation of isoleucine, leucine, valine in urine
MSUD
Lesch-Nyhan
HGPRT
wrinkled tissue paper cells
Gaucher’s disease - GLUCOcerebrosidase def
Globoid cells
Krabbe disease - GALACTocerebroside-beta-galactosidase def
GM1 gangliosidosis
beta galactosidase def
Tay sach’s
Hexoaminadase A def
Sandhoff’s
hexosaminidase A and B def
Niemann Pick B and C
Acid sphingomyelinase def
Niemann pick C
disorder of cholesterol trafficking in the intracellular domain
Metachromatic leukodystrophy
Arylsulfatase A deficiency
Fabry’’s
alpha-galactosidase, angiokeratomas, renal failure, HTN, strokes ANS dysfx
Symmetric white matter involvement in the predominant in POSTERIOR regions,
Adrenoleukodystrophy
Megalencephaly, symmetric white matter disease INVOLVES the u fibers
Canavan’s aspartoacylase def
Megalencephaly , ANTERIOR white matter disease
Alexander’s disease, GFAP
white matter disease with tigroid spares u fibers
Pilazeus Merzbacher gene PLP1 and x-linked
Enlarge orange tonsils
tangiers
Progressive external ophthalmoplegia, <20 y/o, short stature, ataxia, heart block, RP
kearns-sayre syndrome
Feeding difficulties with N/V/D/jaundice,hepatosplenomegaly, cataracts
galactosemia
alopecia, rash, hypotonia, sz, optic atrophy, hearing loss high ammonia
biotinidase def
myoclonic seizure, blindness, curvilinear bodies
neruonal ceroid lipfuscinosis
Gyral calcification in tram track appearance on MRI
Sturge-Weber
Myoclonic epilepsy and cherry red spot
Sialidosis