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How is Cri Du Chat Syndrome diagnosed?

See how Cri Du Chat Syndrome is diagnosed. Which specialists are essential to meet, what tests are needed and other useful information for the diagnosis of Cri Du Chat Syndrome

Cri Du Chat Syndrome diagnosis

Cri Du Chat Syndrome, also known as 5p- Syndrome, is a rare genetic disorder caused by the deletion of a portion of chromosome 5. This condition affects approximately 1 in 20,000 to 50,000 live births. The name "Cri Du Chat" is derived from the French term meaning "cry of the cat," as affected infants often have a distinctive high-pitched cry that resembles the sound of a cat.



Diagnosing Cri Du Chat Syndrome typically involves a combination of clinical evaluation, genetic testing, and imaging studies. The process begins with a thorough examination of the individual's medical history and physical characteristics. The distinct facial features associated with this syndrome, such as a small head, low-set ears, widely spaced eyes, and a small jaw, are often observed during this evaluation.



Genetic testing plays a crucial role in confirming the diagnosis of Cri Du Chat Syndrome. The most common method used is a chromosomal microarray analysis (CMA), which can detect small deletions or duplications in the DNA. This test examines the entire genome and can identify the specific deletion on chromosome 5 that is characteristic of this syndrome. CMA has become the gold standard for diagnosing genetic disorders due to its high sensitivity and accuracy.



In addition to genetic testing, karyotyping may also be performed to visualize the chromosomes and identify any structural abnormalities. This technique involves staining the chromosomes and examining them under a microscope. However, karyotyping may not always detect the specific deletion associated with Cri Du Chat Syndrome, as it requires a larger deletion to be visible.



Imaging studies, such as ultrasound and magnetic resonance imaging (MRI), can provide valuable information about the structural abnormalities in the brain and other organs. These imaging techniques help in assessing the severity of the condition and identifying any associated complications.



It is important to note that the diagnosis of Cri Du Chat Syndrome is not solely based on genetic testing or imaging studies. The clinical evaluation by a healthcare professional experienced in genetic disorders is crucial for accurate diagnosis. The combination of physical examination, genetic testing, and imaging studies allows for a comprehensive assessment of the individual's condition.



Once a diagnosis of Cri Du Chat Syndrome is confirmed, further genetic counseling is recommended for the affected individual and their family. Genetic counselors can provide information about the inheritance pattern of the syndrome, recurrence risks, and available support services. They can also assist in addressing the emotional and psychological aspects associated with the diagnosis.



In conclusion, Cri Du Chat Syndrome is diagnosed through a combination of clinical evaluation, genetic testing, and imaging studies. Genetic testing, particularly chromosomal microarray analysis, is the primary method used to identify the specific deletion on chromosome 5. Karyotyping and imaging studies can provide additional information about structural abnormalities. The expertise of healthcare professionals, including genetic counselors, is essential in accurately diagnosing and managing this rare genetic disorder.


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I have a beautiful princess, named Dalilah Jocelyn. She was diagnosed with CDC at the age of 1. Its was very difficult at first to hear the news, but i love my princess and i am doing everything i can to help be healthy and strong and overall be a ha...
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I am Dad to a CdC girl. Our daughter was born in 2012. She was diagnosed during pregnancy after the 20 week scan (and various scans/tests). We already had a son (born 2008) and have since had another boy in 2014. The first year was the hardest for u...
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Rebecca was born in February 1991 and was my first child.  We learnt of her condition when she was 5 weeks old.  We didn't really understand a lot about it at the time but we did our research and not everything we read we really wanted to know at t...

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