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Synonyms: muscle-liver-brain-eye nanism, pericardial constriction and growth failure, Perheentupa syndrome
This is a rare autosomal recessive disorder caused by a mutation in a gene on chromosome 17. The name Mulibrey is an acronym:
- MU scle
- LI ver
- BR ain
- EY es
Nanism is defined as a genetic abnormality which results in short stature.
Feeding difficulties and respiratory tract infections are the most common problems in infancy.
- Growth failure of prenatal origin and congenital short stature
- Hydrocephaloid skull
- Cutaneous naevi flammei (65%)
- Peculiar high pitched voice (96%)
- Normal intelligence
- Face: scaphocephaly, triangular face, high and broad forehead, high palate, small chin and low nasal bridge (over 90% of patients)
- Eyes: widely-spaced, fundi showing yellow dots and dispersed pigment, hypoplasia of the choroid, strabismus, astigmatism
- Abdomen: hepatomegaly (45%)
- Most cases show pericardial constriction due to thickening of the pericardium.
- Myocardial hypertrophy, and variable myocardial fibrosis are also seen.
- At least 50% of patients eventually develop heart failure.
- Fibrous dysplasia of long bones (25%)
Wilms' tumour Cystic dysplasia of bone (usually the tibia)
Further reading and references
Perpheentupa J, Autio S, Leisti S, et al; Mulibrey nanism, an autosomal recessive syndrome with pericardial constriction. Lancet. 1973 Aug 182(7825):351-5.
Karlberg N, Jalanko H, Perheentupa J, et al; Mulibrey nanism: clinical features and diagnostic criteria. J Med Genet. 2004 Feb41(2):92-8.
Perheentupa J, Autio S, Leisti S, et al; Mulibrey nanism: review of 23 cases of a new autosomal recessive syndrome. Birth Defects Orig Artic Ser. 197511(2):3-17.
Lipsanen-Nyman M, Perheentupa J, Rapola J, et al; Mulibrey heart disease: clinical manifestations, long-term course, and results of pericardiectomy in a series of 49 patients born before 1985. Circulation. 2003 Jun 10107(22):2810-5. Epub 2003 May 19.
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