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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 ...
Phocomelia is a congenital condition that involves malformations of human arms and legs which result in a flipper-like appendage. [1] [2] A prominent cause of phocomelia is the mother being prescribed the use of the drug thalidomide during pregnancy; however, the causes of most cases are to be determined.
Encephaloceles are often accompanied by craniofacial abnormalities or other brain malformations. Symptoms may include neurologic problems, hydrocephalus (cerebrospinal fluid accumulated in the brain), spastic quadriplegia (paralysis of the limbs), microcephaly (an abnormally small head), ataxia (uncoordinated muscle movement), developmental delay, vision problems, mental and growth retardation ...
Anencephaly is the absence of a major portion of the brain, skull, and scalp that occurs during embryonic development. [1] It is a cephalic disorder that results from a neural tube defect that occurs when the rostral (head) end of the neural tube fails to close, usually between the 23rd and 26th day following conception. [2]
Major causes of death include hypoxia and heart abnormalities. It is impossible to predict an exact prognosis during pregnancy or the neonatal period. [13] Half of the live infants do not survive beyond the first week of life without interventions. [17] The median lifespan is five to 15 days without interventions.
Holoprosencephaly is typically diagnosed during fetal development when there are abnormalities found on fetal brain imaging, but it can also be diagnosed after birth. The protocol for diagnosis includes neuroimaging ( Ultrasound or fetal MRI prior to birth or Ultrasound, MRI or CT post birth), syndrome evaluation, cytogenetics , molecular ...
Photos of what pregnancy tissue from early abortions at 5 to 9 weeks actually looks like have gone viral.. The images, which were originally shared by MYA Network — a network of physicians who ...
Cephalic disorders (from Greek κεφαλή 'head') are congenital conditions that stem from damage to, or abnormal development of, the budding nervous system.. Cephalic disorders are not necessarily caused by a single factor, but may be influenced by hereditary or genetic conditions, nutritional deficiencies, or by environmental exposures during pregnancy, such as medication taken by the ...