Chromosomal Anomaly Karyotype Mosaic

The child was born weighing 3.6 kilograms and 320 grams, with a height of 53 centimeters, showing no abnormalities. At three months old, the child could roll over; by almost four months, the head could be fully upright. It took until eight months to sit up, and at nine months, the child could sit independently. The child’s teeth came in early, with the first tooth at four months; now, at nearly ten months old, there are twelve teeth, but the child does not use them to bite things; can only break the finger biscuits and chew them. The child can sit independently for longer periods, showing good balance in front and back, but not in left and right; enjoys standing, not pigeon-toed, with the entire foot on the ground; cannot crawl due to poor hand support, still relying on elbow support; cannot jump, with a positive sign in the right upper and lower limbs, and slightly high muscle tone. However, after hospital rehabilitation treatment, it is hoped that the muscle tone will improve. Were there any contacts during pregnancy that should have been avoided? Also, your husband is a petroleum worker; were there any contacts during pregnancy? It is best to go to a professional children’s hospital for examination and treatment!
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Chromosome Abnormalities and Testing

Chromosomes are the carriers of genetic material, and their abnormalities can lead to various diseases. This article explains the nature of chromosomes, the types of chromosomal disorders, and the purpose and methods of their testing.
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Chromosome Abnormalities May Be Linked to Cystic Hygroma: Further Diagnosis and Recommendations from a 13-Week Ultrasound Examination

At 13 weeks of pregnancy, an ultrasound examination indicates a possible cystic hygroma. To further confirm if the fetus has chromosomal issues, it is recommended to undergo amniocentesis or non-invasive DNA testing.
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Chromosome Screening: Understanding the Examination and Diagnosis of Fetal Chromosome Abnormalities

Down syndrome screening is a method that involves drawing a pregnant woman’s serum to detect the concentration of alpha-fetoprotein and human chrionic gonadotropin (HCG) hormone in the maternal serum, and combines the woman’s due date, age, weight, and gestational age at the time of blood draw to calculate the risk coefficient of giving birth to a Down syndrome child.
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