出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2013/06/02 09:01:48」(JST)
Prune belly syndrome | |
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Classification and external resources | |
Prune belly syndrome in an Egyptian child with Down syndrome. |
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ICD-10 | Q79.4 |
ICD-9 | 756.71 |
OMIM | 100100 |
DiseasesDB | 31089 |
MedlinePlus | 001269 |
eMedicine | med/3055 radio/575 |
MeSH | D011535 |
Prune belly syndrome is a rare, genetic birth defect affecting about 1 in 40,000 births.[1] About 97% of those affected are male. Prune belly syndrome is a congenital disorder of the urinary system, characterized by a triad of symptoms. The syndrome is named for the mass of wrinkled skin that is often (but not always) present on the abdomens of those with the disorder. Other names for the syndrome include Abdominal Muscle Deficiency Syndrome, Congenital Absence of the Abdominal Muscles, Eagle-Barrett Syndrome,[2] Obrinsky Syndrome,[3] Fröhlich Syndrome,[4] or rarely, Triad Syndrome.
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Prune belly syndrome can be diagnosed via ultrasound while a child is still in-utero.[5] An abnormally large abdominal cavity resembling that of an obese person is the key indicator, as the abdomen swells with the pressure of accumulated urine. In young children, frequent urinary tract infections often herald prune belly syndrome, as they are normally uncommon. If a problem is suspected, doctors can perform blood tests to check kidney function. Another test that may reveal the syndrome is the voiding cystourethrogram.
A genetic predisposition has been suggested, and PBS is much more common in males. discordant.
Prune belly syndrome can result in the distending and enlarging of internal organs such as the bladder and intestines. Surgery is often required but will not return the organs to a normal size. Bladder reductions have shown that the bladder will again stretch to its previous size due to lack of muscle. Also many complications can come from enlarged/malformed kidneys which warrant the child to go on dialysis or require a kidney transplant. With proper treatment long healthy lives are possible.
Musculoskeletal abnormalities include pectus excavatum, scoliosis, and congenital dislocations including the hip. Diagnosis of prune belly syndrome necessitates thorough orthopaedic evaluation because of the high prevalence of associated musculoskeletal abnormalities.[6]
The type of treatment, like that of most disorders, depends on the severity of the symptoms. One option is to perform a vesicostomy, which allows the bladder to drain through a small hole in the abdomen, thus helping to prevent urinary tract infections. Similarly, consistent self catheterization, often several times per day, can be an effective approach to preventing infections. A more drastic procedure is a surgical "remodeling" of the abdominal wall and urinary tract. Boys may have an orchiopexy, which moves the testicles to their proper place in the scrotum.
Even with treatment, many patients experience renal failure.
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関連記事 | 「belly」「pruning」「bell」「prune」「syndrome」 |
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