Doctor insights on:
Chromosome 13 Abnormality
On 7&half we TVS shows 2 yolk sac, one with cardiac activity & other is empty. CRL IS 1.13 cm. Is possibility of chromosomal abnormality?
May be: Your obstetrician would be more valuable in discussing those findings and recommend what to do next, take care
On 7&half we TVS shows 2 yolk sac, one with cardiac activity, other is empty. CRL is 1.13 cm. Is possibility of chromosomal abnormality?
Always possible: The transvaginal ultrasound at 7.5 weeks does not rule in or out a chromosomal abnormality. It is believed that there are a lot more twins conceived than born and one twin just dies very early and this may be the cause of some first trimester bleeding. Only with early ultrasounds are we finding these 'vanishing twins'. This may be the case with your empty yolk sac. The other twin is usually normal
Abnormal chromsomes: I assume you are male (45xy) and wish advice on pregnancy with your genetic abnormality and are probably phenotypically asymptomatic. I would encourage compassionate genetic counseling. Carriers of Robertsonian translocations have normal phenotype, but can have problem of infertility associated with more or less severe oligospermia in male adults3-5%).
Depends on which: One. It could cause a number of different medical conditions or could be lethal.
There is absence of chromosomal 15 in me. Is my offspring will be normal? If not then tell me thee abnormality ratio. Plz please
Baby may be abnormal: If a person is missing a piece of chromosome 15, that missing piece probably got attached to another chromosome, thus allowing her to function normally enough to use this healthtap website. Unfortunately, both chromosomes (the one missing a piece and the one that received the missing piece) are abnormal. Offspring are likely to receive one or both of the defective chromosomes. Geneticist can help.See 1 more doctor answer
Bad news: This material is the library of information the fetus needs to develop organs and metabolic systems. Too much or too little means something will go wrong. Since many defects are relatively unique, the outcome may or may not be predictable. Some will trigger spontaneous miscarriage. Some are born and live a long life but have many problems along the way.See 1 more doctor answer
Down syndrome.: The most common chromosomal abnormality in a newborn population was trisomy 21 (down), with an incidence of 1 in 730 live births. Abnormalities of the sex chromosomes (eg, monosomy x or turner, xxy, xyy, xxx) and structural balanced rearrangements also occurred frequently. Trisomy 16 is the most common aneuploidy in abortuses. Trisomy 18 (edwards), and 13 (patau) are most common in stillborns.
Is it true that the chances of having a child with a chromosomal abnormality increases as a womans age increases over 40 year?
Yes: It actually increases to a small degree with every year after peak fertility in the mid 20's. At 40 the risk of a trisomy 21 down syndrome reaches 1% while at 45 it reaches 2%. This number is added to the random risk of 4% that any pregnancy has of an unexpected event (cleft palate, premi, other defect).
1in 1000: According to the national institute of health.
Defect in gamete: Either the egg (usually) or sperm carries an extra chromosome (chm) to conception. The fetus ends up with 3 of that chm along with normal pairs of all the others. The third chm will cause a disruption in the code reading that goes into making the organs and brain. The newborn will be born with these defects.
Size.: Mutations are strategically placed minute changes in dna that change the message encoded in it to produce abnormal proteins and pathological symptoms. Chromosomal abnormalities (e.g. Down syndrome), are larger changes in the number of dna packages (chromosomes) each cell carries, so that many organ systems malfunction (brain, heart, bone marrow, etc).
See below: After 1 miscarriage, the chances don't change...Still around 5-10% depending on the study.
Dependsonabnormality: Actually depends on where the abnormality came from (parent or not). If it is pre-existing in either parent, chances of recurrence can be as high as 100% in a fusion chromosome between the X chromosome and a non-X chromosome. If it is a new anomaly, chance are almost background, although seeing something once always raises the possibility of seeing it, or something like it, again. Can't generalize
Biological inheritan: Most forms of albinism are the result of the biological inheritance of genetically recessive alleles (genes) passed from both parents of an individual, though some rare forms are inherited from only one parent. There are other genetic mutations which are proven to be associated with albinism. All alterations, however, lead to changes in melanin production in the body.
Could an abnormality in a parents chromosome 8 be hereditary? She developed mds and died from it.
Mc in 1st trim, may b because of mismatch chromosome or chromosomal abnormality, means chances of next child 2 b born with chromosomal defects r more?
Not on the internet: That specific question cannot possibly be answered on the internet. You need a geneticist to do the right tests and provide you with a competent consolation or evaluation.See 1 more doctor answer
Hi, I'm born in a family of 4 grown up boys. How is it that I am the only one having chromosomal abnormality leading to azoospermia? The rest are fine.
No reason: Most of chromosomal abnormalities do not follow a specific pattern. Specific gene transfers to next generations follow darwin's proposed laws. But chromosomes don't follow those laws. They can be very sporadic. However they seem to be affected by parents' age.
If a mother had a abnormality with chromosome 8 say (trisometry or missing) she developed mds. Are her children grandchildren at risk of getting mds?
Not likely: Trisomy 8 is a common chromosomal abnormality in mds patients and is likely an acquired event. This is different from trisomy 8 (warkany) syndrome which is an inherited disorder.See 2 more doctor answers
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