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*  Obstetric ultrasonography
"Prefrontal Space Ratio-A Novel Ultrasound Marker in the Second Trimester Screening for Trisomy 21: Systematic Review and Meta- ...
*  Patau syndrome
This can occur either because each cell contains a full extra copy of chromosome 13 (a disorder known as trisomy 13 or trisomy ... "National Down Syndrome Cytogenetic Register Annual Reports 2008/09". Trisomy 13 at WebMD "Trisomy 13 (Patau Syndrome)" SickKids ... Trisomy 13 was first observed by Thomas Bartholin in 1657, but the chromosomal nature of the disease was ascertained by Dr. ... Full trisomy 13 is caused by nondisjunction of chromosomes during meiosis (the mosaic form is caused by nondisjunction during ...
*  Nuchal scan
A further study reported detection of 88% for trisomy 21 (Down syndrome) and 75% for trisomy 18 (Edwards syndrome), with a 3.3 ... Other common chromosomal defects that cause a thicker nuchal translucency are Turner syndrome Trisomy 18 Trisomy 13 Triploidy ... Overall, the most common chromosomal disorder is Down syndrome (trisomy 21). The risk rises with maternal age from 1 in 1400 ... 2004). "First-trimester screening for trisomy 21 combining biochemistry and ultrasound at individually optimal gestational ages ...
*  Brushfield spots
... are a characteristic feature of the chromosomal disorder Down syndrome or trisomy 21. They occur in 35-78% of ... fewer in number and more peripherally located than the Brushfield spots of trisomy 21. Wallis, Hugh R.E. "The Significance of ...
*  Edwards syndrome
"What is Trisomy 18?". Trisomy 18 Foundation. Archived from the original on 2009-03-23. Retrieved 2008-07-24. "Trisomy 18". ... Trisomy 18 (47,XX,+18) is caused by a meiotic nondisjunction event. With nondisjunction, a gamete (i.e., a sperm or egg cell) ... Edwards syndrome, also known as trisomy 18, is a genetic disorder caused by the presence of all, or part of a third copy of ... "trisomy 18". GHR. March 2012. Archived from the original on 2 October 2016. Retrieved 1 October 2016. Jorde, Lynn B.; Carey, ...
*  Trisomy
... 13 (Patau syndrome) Trisomy 9 Trisomy 8 (Warkany syndrome 2) Trisomy 22 Of these, Trisomy 21 and Trisomy 18 are the ... "autosomal trisomies" (trisomies of the non-sex chromosomes) and "sex-chromosome trisomies." Autosomal trisomies are described ... 1 if one chromosome shows trisomy, 2n+1+1 if two show trisomy, etc. "Full trisomy", also called "primary trisomy", means that ... The most common types of autosomal trisomy that survive to birth in humans are: Trisomy 21 (Down syndrome) Trisomy 18 (Edwards ...
*  Trisomy 22
Complete Trisomy 22 is in contrast with Mosaic trisomy 22; this disorder is characterized by an extra copy of chromosome 22 ... "Mosaic Trisomy 22". Chromosome 22 Central. Retrieved 10 November 2011. "Complete Trisomy 22". Chromosome 22 Central. Retrieved ... Mosaic trisomy 22 is a disorder in which an extra chromosome 22 is found only in some cells of the body. The severity of each ... Trisomy 22 is a chromosomal disorder in which there are three copies of chromosome 22 rather than two. It is a frequent cause ...
*  Trisomy 16
ISBN 978-0-07-143900-8. Benn, Peter (1998-09-01). "Trisomy 16 and trisomy 16 mosaicism: A review". American Journal of Medical ... Trisomy 16 is a chromosomal abnormality in which there are 3 copies of chromosome 16 rather than two. It is the most common ... Full trisomy 16 is incompatible with life and most of the time it results in miscarriage during the first trimester. This ... Mosaic trisomy 16, a rare chromosomal disorder, is compatible with life, therefore a baby can be born alive. This happens when ...
*  Trisomy 8
Complete trisomy 8 causes severe effects on the developing fetus and can be a cause of miscarriage. Complete trisomy 8 is ... Trisomy 8, also known as Warkany syndrome 2, is a human chromosomal disorder caused by having three copies (trisomy) of ... Trisomy 8 mosaicism affects wide areas of chromosome 8 containing many genes, and can thus be associated with a range of ... Trisomy is also found in some cases of chronic myeloid leukaemia, potentially as a result of karyotypic instability caused by ...
*  Trisomy 9
Chromosome 9, Trisomy Mosaic MaggiBlair.com Maggi Blair - Trisomy 9 Mosaic Syndrome TRISOMY 9p / Mosaic Trisomy 9 / Trisomy 9 ... Full trisomy 9 is a lethal chromosomal disorder caused by having three copies (trisomy) of chromosome number 9. It can be a ... viable condition if trisomy affects only part of the cells of the body (mosaicism) or in cases of partial trisomy (trisomy 9p) ... Trisomy 9p is one of the most frequent autosomal anomalies compatible with long survival rate. A study of five cases showed an ...
*  Distal trisomy 10q
In Distal Trisomy 10q disorder, end or distal portion of the q (long) arm of the chromosome number 10 appears to be present ... One such error is the cause of Distal trisomy 10q disorder. Each chromosome has two arms, labeled p (for petite, or short) and ... Distal trisomy 10 is a rare chromosomal disorder that causes several physical defects and intellectual disability. Humans, like ... This extra arm results in chromosome 10 trisomy, meaning that three arms are present. Depending on the length of the aberrant ...
*  Chromosome 15q trisomy
... is an extremely rare genetic disorder, caused by a chromosomal aberration in which there is an excess ...
*  Confined placental mosaicism
The common autosomal trisomies (21, 18, 13) made up a smaller number of cases of mosaicism detected on CVS, but were more often ... This trisomy is confined to the chorionic villus stroma. This type of mosaicism is described in normal pregnancies and is ... March 1997). "Rare trisomy mosaicism diagnosed in amniocytes, involving an autosome other than chromosomes 13, 18, 20, and 21: ... Errors of meiotic origin are correlated with higher levels of trisomy in placental tissues and may be associated with adverse ...
*  G&T-Seq
Trisomy) or loss. Subchromosomal changes could also be correlated with changes in expression of genes at affected loci. As well ...
*  Breech birth
13 trisomy syndrome 12%; 18 trisomy syndrome 43%; 21 trisomy syndrome 5%; de Lange syndrome 10%; Anencephalus 6-18%, Spina ...
*  Potocki-Lupski syndrome
"Trisomy 17p11.2 (Potocki-Lupski syndrome)". Orphanet. Paris, France: INSERM. Retrieved 25 August 2009. "About Potocki-Lupski ... Potocki-Lupski syndrome (PTLS), also known as dup(17)p11.2p11.2 syndrome, trisomy 17p11.2 or duplication 17p11.2 syndrome, is a ...
*  Palpebral fissure
The chromosomal conditions trisomy 9 and trisomy 21 (Down syndrome) can cause the palpebral fissures to be upslanted, while ... Kannan TP, Hemlatha S, Ankathil R, Zilfalil BA (2009). "Clinical manifestations in trisomy 9". Indian journal of pediatrics. 76 ...
*  Pilomatricoma
Trisomy 9, and Gardner syndrome. It has been reported that the prevalence of pilomatricomas in Turner syndrome is 2.6%. Hybrid ...
*  Erondu-Cymet syndrome
Trisomy 21 Erondu, U. A.; Cymet, T. C. (Winter 2006). "Chromosome 21 abnormalities a review and report of a case of erondu- ...
*  Chromosome 14 (human)
Lemire EG, Cardwell S (1999). "Unusual phenotype in partial trisomy 14". Am J Med Genet. 87 (4): 294-6. doi:10.1002/(SICI)1096- ...
*  Goldstein's toe sign
... associated with cretinism and trisomy 21.. ...
*  Nondisjunction
... trisomy 21), are Edwards syndrome (trisomy 18) and Patau syndrome (trisomy 13). Complete trisomies of other chromosomes are ... This phenomenon most likely is the result of a pregnancy that started as a trisomy due to nondisjunction. Since most trisomies ... The term autosomal trisomy means that a chromosome other than the sex chromosomes X and Y is present in 3 copies instead of the ... Trisomy X is a form of sex chromosome aneuploidy where females have three instead of two X chromosomes. Most patients are only ...
*  49,XXXXX
Trisomy X Tetrasomy X "49,XXXXX syndrome". GARD. Retrieved 22 January 2018. "Penta X Syndrome". NORD (National Organization for ...
*  Triple X syndrome
In some cases, trisomy X occurs during cell division in early embryonic development. Some females with triple X syndrome have ... Triple X syndrome, also known as trisomy X and 47,XXX, is characterized by the presence of an extra X chromosome in each cell ... Epicanthal folds and increased distance between the eyes in 2-year-old girl with trisomy X The type of finger curvature ... Tartaglia, NR; Howell, S; Sutherland, A; Wilson, R; Wilson, L (11 May 2010). "A review of trisomy X (47,XXX)". Orphanet journal ...
*  Chromosome 13 (human)
Trisomy 13 can also result from an extra copy of chromosome 13 in only some of the body's cells (mosaic trisomy 13). In a small ... Trisomy 13: Trisomy 13 occurs when each cell in the body has three copies of chromosome 13 instead of the usual two copies. ... These cases are called translocation trisomy 13. Extra material from chromosome 13 disrupts the course of normal development, ... causing the characteristic signs and symptoms of trisomy 13. Researchers are not yet certain how this extra genetic material ...