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Trisomy 18p

Duplication 18p


  • Here we report on a newborn male presenting with an atrial septal defect and a club foot.[ncbi.nlm.nih.gov]
  • In this report, we present the clinical phenotype in patients with aberrations of chromosomes 7p and 18p and reviewed the literature to summarize cardiovascular malformations in these patients.[ncbi.nlm.nih.gov]
  • To present the perinatal findings and molecular cytogenetic analysis of concomitant trisomy 18p (18p11.2-- pter) and distal 21q22.3 deletion.[ncbi.nlm.nih.gov]
  • If an intellectual disability and/or developmental delay is present, early educational intervention and early services are important.[rarediseases.info.nih.gov]
  • To the best of our knowledge, the present chromosomal breakpoint with rearrangement has not been previously described. This chromosome aberration may be responsible for this syndrome. Copyright 2012 Elsevier B.V. All rights reserved.[ncbi.nlm.nih.gov]
Short Finger
  • Clinical features in these cases have included the following: lowset ears, mongoloid slant of eyes, hypertelorism, cleft palate, webbed neck, simian creases, short fingers, clinodactyly, hypotonia, and low-set hairline.[jamanetwork.com]
Small Hand
  • She was noted to have dysmorphic features (prominent occiput, high-arched palate, short nose with anteverted nares, orbital hypertelorism, depressed nasal root, low set ears, small hands with widened finger-tips, and spooned nails) and a congenital heart[synapse.koreamed.org]
Narrow Forehead
  • The facial dysmorphism consisted of a high, narrow forehead, hypotelorism, deep-set eyes, and abnormally shaped ears (Fig. 1 ). An examination of the hands revealed long fingers and fifth finger clinodactyly.[molecularcytogenetics.biomedcentral.com]
  • Minor anoma-lies reported were micrognathia, bilateral epican-thus, narrow forehead, hypotelorism, low-set ears,and narrow arched palate. There was a relativemicrocephaly with head circumference of 40 cm(1SD).[documents.tips]
Broad Nasal Bridge
  • nasal bridge Broad nasal root Broadened nasal bridge Increased breadth of bridge of nose Increased breadth of nasal bridge Increased width of bridge of nose Increased width of nasal bridge Nasal bridge broad Wide bridge of nose Widened nasal bridge [[rarediseases.info.nih.gov]
High Forehead
  • The patients who have trisomy 2p23-pter share distinctive clinical features, including marked psychomotor delay, dysmorphic features with high forehead, frontal bossing, short nose with anteverted nares, hypertelorism, malar hypoplasia and micrognathia[synapse.koreamed.org]
  • Prehension remained difficult forher and she had clumsy gestures. She tried tocommunicate with adults but could say a few wordslike baby. Her weight was 9.5 kg (2SD), height85 cm (0.5SD), and head circumference 46 cm*Correspondence to: M.[documents.tips]
Cognitive Deficit
  • Leach NT, Chudoba I, Stewart TV, Holmes LB, Weremovicz S (2007) Maternally inherited duplication of chromosome 7, dup(7)(p11.2p12), associated with mild cognitive deficit without features of Silver-Russell-Syndrome.[springermedizin.de]


Ventricular Hypertrophy
  • Echocardiogram showed a perimembranous-type ventricular septal defect of 5 mm and a secundum atrial septal defect of 4 mm, with right atrial enlargement and right ventricular hypertrophy ( Table 1 ).[synapse.koreamed.org]


  • Emphasizes the treatment of corrected congenital heart disease for coverage of the clinical management of cardiac problems in the adolescent and young adult.[books.google.de]
  • This era was followed by improved environmental factors which operate to produce methods of medical treatment, introduction congenital cardiac malformations.[books.google.de]
  • The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment.[orpha.net]
  • Treatment - Chromosome 18- trisomy 18p Not supplied. Resources - Chromosome 18- trisomy 18p Not supplied.[checkorphan.org]
  • Treatment is based on the signs and symptoms present in each person. MalaCards based summary : Chromosome 18p Duplication, also known as duplication 18p , is related to aortic coarctation and tetrasomy 18p .[malacards.org]


  • Diagnosis - Chromosome 18- trisomy 18p These home medical tests may be relevant to Chromosome 18, trisomy 18p: * Cold & Flu: Home Testing: o Home Fever Tests o Home Ear Infection Tests o Home Flu Tests Prognosis - Chromosome 18- trisomy 18p Not supplied[checkorphan.org]
  • Prognosis No correlation between trisomy 18 and prognosis.[atlasgeneticsoncology.org]
  • Therefore, the precise characterization of SMCs is essential in order to perform genotype-phenotype correlation and predict the prognosis [ 4 , 5 ].[synapse.koreamed.org]
  • Other types of partial trisomy 18 are non-typical with reference to the craniofacial anomalies and findings in the papillary system; on the whole, the clinical pattern is weaker, and prognosis is more favourable.[thieme-connect.com]
  • Thus, it is unclear whether heart surgery improves the prognosis of these individuals (46).[scielo.br]


  • Their etiology is not precisely century with the first clinical recognition of known, so we have included chapters that dis symptoms and patterns for diagnosis of car cuss many aspects of congenital cardiac mal diovascular diseases.[books.google.de]
  • Etiology In ES, as well as in other trisomies, maternal age is usually older (6,9,13,17,30).[scielo.br]


  • Epidemiology of double aneuploidies involving chromosome 21 and the sex chromosomes. Am J Med Genet A 2005; 134A(1): 24-32. Mabboux P, Brisset S, Aboura A, Pineau D, Koubi V, Joannidis S, Labrune P, Tachdjian G.[content.sciendo.com]
  • The epidemiology of infertility in the North East of Scotland. Hum Reprod. 2009;24(12):3096–107. 3. Jungwirth A, Giwercman A, Tournaye H, Diemer T, Kopa Z, Dohle G, et al.[molecularcytogenetics.biomedcentral.com]
  • Epidemiology Frequency United States Prevalence is approximately 1 in 6000-8000 live births. At the time of first trimester screening, the incidence of trisomy 18 is 1 in 400, but due to high spontaneous loss, the birth prevalence is 1 in 6500.[emedicine.medscape.com]
  • Trisomy 13 and trisomy 18 in a defined population: epidemiological, genetic and prenatal observations. Prenat Diagn. 2003;23:856-60. Wagner R, Thom E, Simpson JL, et al. First semester screening for trisomies 21 and 18.[rarediseases.org]
Sex distribution
Age distribution


  • Pathophysiology See the list below: Trisomy 18 severely affects all organ systems. In translocations that result in partial trisomy or in cases of mosaic trisomy 18, clinical expression is less severe, and survival is usually longer.[emedicine.medscape.com]


  • […] sources for Chromosome 18, trisomy 18p includes the 4 symptoms listed below: * Psychomotor retardation * Epicanthal folds * Small ears * Finger abnormalities Causes - Chromosome 18- trisomy 18p * Epicanthal folds * Psychomotor retardation * Small ears Prevention[checkorphan.org]
  • How can I help prevent trisomy 13 and trisomy 18 in my child? Researchers don’t know how to prevent the chromosome errors that cause these disorders.[urmc.rochester.edu]
  • Hospital for Sick Children Health A-Z Search a complete list of child health articles expand_more View All Drug A-Z Search a list of articles about medications expand_more View All Learning Hubs Browse a complete list of content groups Healthy Living & Prevention[aboutkidshealth.ca]
  • Centers for Disease Control and Prevention (CDC) identify around 1 in 68 American children as ...Read more[healthtap.com]
  • Can trisomy 18 or trisomy 13 be cured or prevented? There is no cure for trisomy 18 or trisomy 13. We are not certain how to prevent the chromosomal error that causes trisomy 18 and trisomy 13.[stanfordchildrens.org]

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