CONGENITAL DEFECTS CNS Flashcards
BANANA SIGN on ANTENATAL USG
🧠✨bANana sign ; ArN✨
Arnold Chari MALFORMATIONS
DUE TO: Absent Cisterna MAGNA
Development of CNS
🧠⚡To Do with Me Met My longata ⚡
LEMON SIGN on USG
Lemon shaped skull resulting from scalloping of frontal bones
NTD
Markers for NTD
Alpha fetoprotein
⭐ Acetylcholine esterase
Mumps enter the CNS via
Choroid plexus ➡️ infect the ependymal cells
Development of CNS BEGINS AT
3rd week
Along with GASTRULATION
2 ° MESENCHYME aka
Neural Creast cells
4th Germ Layer
Folic acid Supplementation
Normal mother
Mother with previous H/O NTD child
⭐ 400 micro grams daily
⭐ 4000 micro grams daily
⚡⚡ MOST SPECIFIC and BEST MARKER FOR NTD
Acetylcholinesterase
⚡⚡ MOST SENSITIVE MARKER FOR NTD
🧠⚡ T = t⚡
Alpha fetoprotein
Neural Tube Defects
In Leaking MENINGOMYELOCELE, BEST Test for Dx
CSF CULTURE
BLOOD CULTURE
⚡⚡ MOST SERIOUS TYPE OF CAUDAL NTD
Meningomyelocele
⚡⚡ MOST COMMON LOCATION OF MENINGOMYELOCELE
LUMBO SACRAL Region
🧬 MODE OF INHERITENCE 💉 of NTD
Multi factorial
Very HIGH INCIDENCE OF HYDROCEPHALUS ➕ ARNOLD CHIARI MALFORMATIONS II IS SEEN WITH WHICH NTD
MENINGOMYELOCELE
MENINGOMYELOCELE types
GENITAL TRACT ABNORMALITIES ARE ASSOCIATED WITH WHICH NTD
Meningocele
-Vaginal septa
-Rectovaginal fistula
NTD Patients have which ALLERGY
Latex injury
⚡⚡ MOST COMMON CAUSE of VENTRICULOMEGALY HYDROCEPHALUS IN NEWBORN
Aqueductal Stenosis
Arnold Chiari MALFORMATIONS
Basic Defect
Herniation of cerebellum and 4th ventricle into foramen magnum
⬇️
Flattening of Base of skull
➕
Spina bifida with MENINGOMYELOCELE
Which Arnold Chiari MALFORMATIONS seen in INFANTS?
Type II
Arnold Chiari MALFORMATIONS in ADULTS
Type 1
HYDROCEPHALUS ➕ MENINGOMYELOCELE
IS ASSOCIATED WITH WHICH Arnold Chiari MALFORMATIONS
Type 2 Arnold Chiari MALFORMATIONS
Cause of Type 2 Arnold Chiari MALFORMATIONS
Failure of PONTINE FLEXURE during embryogenesis
Type 3 and Type 4 Arnold Chiari MALFORMATIONS
Type 1 Arnold Chiari MALFORMATIONS
AGENESIS OF SPLENIUM OF CORPUS CALLOSUM is ASSOCIATED with
DANDY WALKER MALFORMATIONS
⚡⚡ MOST COMMON site of PORENCEPHALY
Sylvian Fissure
PORENCEPHALY is ASSOCIATED with
DANDY WALKER SYNDROME
SONIC HEDGEHOGBPATHWAY DEFECT ass with
HOLOPROSENCEPHALY
Basic defect in NEURONAL MIGRATION DISORDERS
Radial Glial Fibers
4 LAYERED CEREBRAL CORTEX ASSOCIATED WITH
LISSENCEPHALY
INDEPENDENT EEG FINDING ON 2 SIDES OF THE BRAIN
AGENESIS of Corpus Callosum
Vein of GALEN MALFORMATION
Ans C:-
🌠Hydranencephaly
🌊Condition in which brain lacks cerebral hemispheres and cranial cavity is filled with fluid
🌊C/f:-
1. Normal at birth
2. Increasing head circumference
3. Seizures
4. Quadriplegia ,respiratory dufficulties , lack of growth
🌊Diagnosis :-
1. Transillumination positive
2. IOC - USG
🌊Fatal condition