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IMAGES IN MEDICINE
Year : 2002  |  Volume : 48  |  Issue : 1  |  Page : 50-1

Robinow syndrome.


Division of Paediatric Orthopaedics, The Valley Children's Hospital, Fresno, UCSF, USA. , USA

Correspondence Address:
H S Hosalkar
Division of Paediatric Orthopaedics, The Valley Children's Hospital, Fresno, UCSF, USA.
USA
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Source of Support: None, Conflict of Interest: None


PMID: 12082331

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Keywords: Abnormalities, Multiple, diagnosis,Case Report, Child, Dwarfism, diagnosis,Face, abnormalities,Female, Human, Hypogonadism, Syndrome,


How to cite this article:
Hosalkar H S, Gerardi J, Shaw B A. Robinow syndrome. J Postgrad Med 2002;48:50

How to cite this URL:
Hosalkar H S, Gerardi J, Shaw B A. Robinow syndrome. J Postgrad Med [serial online] 2002 [cited 2019 Sep 15];48:50. Available from: http://www.jpgmonline.com/text.asp?2002/48/1/50/152


A 10-year Hispanic girl, born of unrelated parents (first child of a 36-year-old woman and a 42-year-old man), after a normal pregnancy, had presented with short stature and facial dysmorphism. There was no significant peri-natal history and family history was negative for birth defects and genetic disorders. Anthropometry at 6-months revealed weight of 4300 gms, height of 54 cms, and head circumference of 36 cms (all < 3rd centile).

There was history of neonatal jaundice and recurrent respiratory infections in infancy and childhood. Examination revealed dysm orphic facial features (including macrocephaly, frontal bossing, hypertelorism (interpupillary distance of 7 cms), prominent eyes, down-slanting palpebral fissures, small nose, prominent philtrum, down turned angles of the mouth, crowded teeth and posteriorly rotated ears) [Figure - 1], brachymelia with brachydactyly, camptodactyly [Figure:2}, mid-thoracic scoliosis with hemivertebrae and rib crowding [Figure - 3], and genital anomalies in the form of hypoplastic clitoris and labia majora. She had hypoplastic nails in all digits, hyperlaxity of joints in upper and lower limbs, with associated skin laxity. There was no evidence of any umbilical or abdominal wall anomalies and no associated organomegaly. She had a cleft palate that was repaired at the age of 2 years. Anthropometry (at age 10) revealed a height of 136.5 cms (25th–50th percentile), weight of 39.5 kg (75th–90th percentile), mesomelic dwarfism with UL: LL ratio of 1.6 and forearm brachymelia with arm to forearm ratio of 1.5: 1. She was Tanner stage I in terms of sexual maturity, had obvious neurological and developmental delay with a functioning I.Q at a 4-year-old level. Her bone age was 8 years 5 months at a chronologic age of 10 years. CT brain revealed an absent corpus callosum, while cardiac assessment did not reveal any associated anomalies. Endocrine work-up (Growth hormone, LH, FSH, oestrogen, progesterone, IGF-1, T3,T4, and, TSH) as well as immunological work up (T-cell and B-cell functions) was normal. A diagnosis of Robinow syndrome was made.


  ::   Discussion Top


First described by Robinow et al in 1969[1] this syndrome refers to a combination of short stature, characteristic facial dysmorphism (foetal facies), genital hypoplasia, and mesomelic brachymelia. Although the incidence of Robinow syndrome is about 1:500,000, the prevalence is slightly lower since 5-10 % of patients die in infancy or early childhood. The male to female ratio of Robinow syndrome is 1:1.[2]

The essential criteria required for clinical diagnosis are characteristic facies, forearm brachymelia, short stature, and genital hypoplasia.[2] Autosomal dominant, autosomal recessive, and male-to-male transmission have all been reported in this syndrome, thus suggesting genetic heterogeneity.[3] Phenotypic presentation is related to the inheritance pattern and patients with the recessive form have more severe dwarfism, more severe vertebral anomalies, more severe brachymelia and more digital defects.[2] Parental age has not been found to be a significant factor although consanguinity seems to play some role.[3] Chromosome studies have revealed consistent negative results except for a single reported case of 7q (7q32®q ter) deletion.[4] Mutation of the gene encoding the ROR2 tyrosine kinase has now been implicated in Robinow syndrome.[5],[6] No specific metabolic abnormalities have been identified. Lee et al observed partial primary hypogonadism as indicated by elevated levels of follicular stimulating hormone, hyper-response of LH on stimulation, normal 5 alpha-reductase activity and normal androgen receptor activity in genital skin fibroblasts.[7]

Radiographs are useful for assessing spinal deformities or rib anomalies and may also help to document forearm brachymelia, hand anomalies, and facial features. Assessment of the length of the long bones and the ulna / humerus ratio has been reported a useful index for the prenatal diagnosis.[8]

Pulmonary or cardiac complications are common in these patients, and approximately 5-10% have a premature death in infancy and childhood.[1],[2] Although some degree of mental retardation occurs in few (20%), intelligence is normal in most cases.[3] Management includes surgical intervention for hernias, bracing or surgery for vertebral anomalies and scoliosis, orthodontic treatment for dental malalignment, facial reconstruction in selected cases for psychological support, and occasionally hormonal therapy. Recombinant human growth hormone has been proved to cause a significant increase in the growth rate in children with Robinow syndrome and growth hormone deficiency.[9] Human chorionic gonadotropin and/ or testosterone therapy during infancy has been suggested to improve penile length and testicular volume in male children.[10] With normal intelligence in most cases, and adequate sexual functioning and reproduction,[2] the prognosis for Robinow syndrome is good.

 
 :: References Top

1.Robinow M, Silverman FN, Smith HD. A newly recognized dwarfing syndrome. Am J Dis Child 1969;117:645-651.  Back to cited text no. 1    
2.Robinow M. Robinow syndrome. In: Buyse ML, editor. Birth Defects Encyclopedia. Massachusettes: Blackwell scientific publications; 1990. pp1499-1500.  Back to cited text no. 2    
3.Wang LY, Hsu CH, Shih SL, Lin SP. Robinow syndrome: report of one case. Chung Hua Min Kuo Hsiao Erh Ko I Hsueh Hui Tsa Chih 1997;38:235-238.  Back to cited text no. 3    
4.Robinow M. The Robinow (fetal face) syndrome: a continuing puzzle. Clin Dysmorphol 1993;2:189-198.   Back to cited text no. 4    
5.van Bokhoven H, Celli J, Kayserili H, van Beusekom E, Balci S, Brussel W, et al. Mutation of the gene encoding the ROR2 tyrosine kinase causes autosomal recessive Robinow syndrome. Nat Genet 2000;25:423-426.  Back to cited text no. 5    
6.Afzal AR, Rajab A, Fenske CD, Oldridge M, Elanko N, Ternes-Pereira E, et al. Recessive Robinow syndrome, allelic to dominant brachydactyly type B, is caused by mutation of ROR2. Nat Genet 2000; 25:419-422.  Back to cited text no. 6    
7.Lee PA, Migeon CJ, Brown TR, Robinow M. Robinow’s syndrome. Partial primary hypogonadism in pubertal boys, with persistence of micropenis. Am J Dis Child 1982;136:327-330.  Back to cited text no. 7    
8.Loverno G, Guanti G, Caruso G, Selvaggi L. Robinow syndrome: prenatal diagnosis. Prenatal Diagnosis 1990;10:121-126.  Back to cited text no. 8    
9.Castells S, Chakurkar A, Qazi Q, Bastian W. Robinow syndrome with growth hormone deficiency: treatment with growth hormone. J Pediatr Endocrinol Metab 1999;12:565-571.  Back to cited text no. 9    
10.Soliman AT, Rajab A, Alsalmi I, Bedair SM. Recessive Robinow syndrome: with emphasis on endocrine functions. Metabolism 1998; 47:1337-1343.  Back to cited text no. 10    


    Figures

[Figure - 1], [Figure - 2], [Figure - 3]

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