Chromosome 21, tetrasomy 21q: A rare chromosomal disorder where there is four copies of the long arm of chromosome 21 instead of the normal two which results in various physical and mental anomalies.
The list of signs and symptoms mentioned in various sources for Chromosome 21, tetrasomy 21q includes the 33 symptoms listed below: * Flat back of skull * High forehead * Broad forehead * Retrognathia * Full cheeks * Fleshy ear lobules * Down slanting space between eyelids * Widely spaced eyes * Prominent supraorbital ridges * Short nose * Flat nasal bridge * Anteverted nostrils * Epicanthal folds * Large mouth * Down turned mouth * Thin lips * Highly arched palate * Short neck * Excess nuchal skin * Umbilical hernia * Short hands * Stubby fingers * Short feet * Overlapping fingers * Clinodactyly * Reduced muscle tone * Peliosis * Hypotrichosis * Hypoplastic nails * Small penis * Undescended testes * Mental retardation * Feeding difficulty
* Anteverted nostrils * Broad forehead * Clinodactyly * Down slanting space between eyelids * Down turned mouth * Epicanthal folds * Feeding difficulty * Flat back of skull * Flat nasal bridge * Full cheeks * High forehead * Highly arched palate * Hypoplastic nails * Large mouth * Mental retardation * Overlapping fingers * Prominent supraorbital ridges * Reduced muscle tone * Short feet * Short neck * Short nose * Small penis * Thin lips * Umbilical hernia * Widely spaced eyes
The signs and symptom information on this page attempts to provide a list of some possible signs and symptoms of Chromosome 21, tetrasomy 21q. This medical information about signs and symptoms for Chromosome 21, tetrasomy 21q has been gathered from various sources, may not be fully accurate, and may not be the full list of Chromosome 21, tetrasomy 21q signs or Chromosome 21, tetrasomy 21q symptoms. Furthermore, signs and symptoms of Chromosome 21, tetrasomy 21q may vary on an individual basis for each patient. Only your doctor can provide adequate diagnosis of any signs or symptoms and whether they are indeed Chromosome 21, tetrasomy 21q symptoms.