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Microcephaly generally is due to the diminished size of the largest part of the human brain, the cerebral cortex, and the condition can arise during embryonic and fetal development due to insufficient neural stem cell proliferation, impaired or premature neurogenesis, the death of neural stem cells or neurons, or a combination of these factors ...
Clinically, patients present with microcephaly and significant developmental delay. While some patients may be able to walk, others may not due to spasticity of limbs and hypotonic muscle tone, with progressive degeneration over time. Patients may also present with seizures, ranging from single febrile seizure to intractable epilepsy.
Infantile cerebral and cerebellar atrophy with postnatal progressive microcephaly is a rare hereditary autosomal recessive malformation syndrome of the central nervous system characterized by profound motor delays and intellectual disabilities, progressive microcephaly, hypertonia, spasticity, clonus and epilepsy. MRI findings include severe ...
Treatment Immunoglobulin replacement, HSCT [ 1 ] Cernunnos deficiency is a form of combined immunodeficiency characterized by microcephaly , due to mutations in the NHEJ1 gene, it is inherited via autosomal recessive manner [ 2 ] [ 1 ] Management for this condition is antiviral prophylaxis and antibiotic treatment.
Achalasia microcephaly; Chest x-ray of an individual with achalasia. The arrows point to the areas of extreme esophageal dilation. Symptoms: Manifestation of achalasia: regurgitation, vomiting and dysphagia, alongside diagnosis of microcephaly: abnormally small head size below the third percentile as well as mild to moderate mental retardation.
Microcephaly deafness syndrome is an extremely rare genetic disorder which consists of microcephaly, congenital hearing loss, mild intellectual disability, speech delay, low height, and facial dysmorphisms (such as low-set cup-shaped ears, protruding lower lips, micrognathia, epicanthal folds, drooping lower lip, and a rather big distance between both eyebrows).
MASA syndrome has been associated with variants in the L1CAM gene [1] which is an axonal glycoprotein that is essential for normal development of the central and peripheral nervous systems during the fetal period and postnatally. [10]
Microlissencephaly (MLIS) is a rare congenital brain disorder that combines severe microcephaly (small head) with lissencephaly (smooth brain surface due to absent sulci and gyri). Microlissencephaly is a heterogeneous disorder, i.e. it has many different causes and a variable clinical course. [1]