Home | About Us | Editorial Board | Current Issue | Archives | Search | Instructions | Subscription | Feedback | e-Alerts | Login 
Journal of Indian Society of Pedodontics and Preventive Dentistry Official publication of Indian Society of Pedodontics and Preventive Dentistry
 Users Online: 834  
 
  Print this page Email this page   Small font sizeDefault font sizeIncrease font size


 
SYNDROME
Year : 2007  |  Volume : 25  |  Issue : 5  |  Page : 10-12
 

Crouzons syndrome: A case report


1 Department of Pedodontics and Preventive Dentistry, Manipal College of Dental Sciences, Mangalore, Karnataka, India
2 Department of Oral and Maxillofacial Dentistry, Manipal College of Dental Sciences, Mangalore, Karnataka, India

Correspondence Address:
R Arathi
Department of Pedodontics and Preventive Dentistry, Manipal College of Dental Sciences, Mangalore - 575 001, Karnataka
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


PMID: 17921633

Rights and PermissionsRights and Permissions

 

   Abstract 

Human skull is made up of many bone joints connected by sutures. The sutures fuse in later life after the complete growth of the brain. If any of these sutures closes early, it may interfere with the normal growth of the brain. The developing brain may exert pressure on the skull and may grow in the direction of the other open sutures. Premature sutural fusion may occur alone or together with other anomalies, making up various syndromes. Crouzons syndrome is an example of such a syndrome that is associated with premature synostosis of the sutures of the skull. Presented in this article is a case of Crouzons syndrome seen in a boy aged 9 years.


Keywords: Craniofacial syndromes, Crouzon, premature synostosis


How to cite this article:
Arathi R, Sagtani A, Baliga M. Crouzons syndrome: A case report. J Indian Soc Pedod Prev Dent 2007;25, Suppl S1:10-2

How to cite this URL:
Arathi R, Sagtani A, Baliga M. Crouzons syndrome: A case report. J Indian Soc Pedod Prev Dent [serial online] 2007 [cited 2019 Dec 9];25, Suppl S1:10-2. Available from: http://www.jisppd.com/text.asp?2007/25/5/10/34739



   Introduction Top


The skull is composed of many bones that are separated by sutures. These sutures allow the skull to expand and develop in synchrony with the growth of the brain. If one or more of the sutures close early, especially before the complete growth of the brain, the developing brain may exert pressure on the skull and may grow in the direction of the other open sutures. This can result in an abnormally shaped head and in severe cases can also cause increased pressure on the growing brain.

Premature synostosis (fusion of the suture) commonly involves the sagittal and coronal suture. Lambdoidal sutures are occasionally involved. The order and rate of suture fusion determines the degree of deformity and disability. [1],[2] Various su­tures may be prematurely synostosed, and multiple sutural involve­ment is found eventually in most cases. [3]

Premature sutural fusion may occur alone or together with other anomalies, making up various syndromes. [4]

In this article we present Crouzons syndrome, which is one of the syndromes associated with synostosis of cranial sutures and is seen 1 in 60,000 persons. The differential diagnosis of Crouzons syndrome includes simple craniosynostosis as well as the Apert, Pfeiffer and Saethre-Chotzen syndromes. Unlike the other forms, Crouzons syndrome presents with no digital abnormalities.[5]


   Case Report Top


A 9-year-old male child with normal intelligence studying in standard five visited the Department of Pedodontics and Preventive Dentistry for routine dental checkup through the school dental health program. His appearance was different from other children of his age, with protruding eyes and enlarged calvarium. History from the parents revealed that these features started developing since he was a small child, and the severity has gradually increased. No positive familial history was obtained.

On careful examination, following features were identified [Figure - 1] :

  1. Exophthalmos
  2. Strabismus
  3. Hypertelorism
  4. Irregularly shaped vault with left side of the head enlarged, involving the sagittal and coronal sutures
  5. Relatively large mandible
  6. Retruded maxilla, resulting in midface retrusion
  7. Parrot beak nose
  8. Asymmetrical enlargement of the skull
  9. Everted lower lip
  10. Anterior cross bite with posterior open bite
  11. Deep and narrow palate
  12. No digital abnormalities were seen
  13. Reduced vision
  14. No dental aplasia was present


X-ray report

Radiographs of the skull [Figure - 2]A and B revealed obliteration of sagittal and coronal suture lines with obvious bony continuity. A hammered-silver ('beaten metal/ copper beaten') appearance was seen in the regions of the skull due to compression of the developing brain on the fused bone.

Features of the CT scan were as follows [Figure - 3]

  1. Craniosynostosis with premature closure of sutures
  2. Shallow orbits with proptosis
  3. Hypoplastic maxilla and zygoma
  4. Nonpneumatized right middle ear cavity with acellular mastoids
  5. Moderate degree of hydrocephalus with diffuse indentation of inner table of skull and narrowing of diploic space and prominent convolutional margins [Figure - 4] .


Treatment plan

A syndrome due to the complexity of symptoms always demands a multidisciplinary approach for successful outcome. The aim of treatment in this case is to relieve the intracranial pressure, which can be done by creating drainage for cerebrospinal fluid, and to retroposition the globe to allow adequate eye closure and prevent exposure keratitis and restore facial symmetry.

The treatment plan for this patient was divided into different stages as follows:

  1. Performing a ventriculoperitoneal shunting (V-P shunt), which will be done by a neurosurgeon
  2. Cranial vault contouring and monobloc advancement of midface with LeFort I advancement
  3. Orthodontic correction of the occlusion



   Discussion Top


First described by Octave Crouzon (1874-1938), who was a French neurologist in 1912, Crouzon syndrome is a genetic disorder, characterized by abnormal fusion between bones in the skull and face, resulting in an abnormally shaped head and face. The phenotypic features of Crouzon syndrome may be absent at birth and evolve gradually during the first few years of life. [6],[7]

It is commonly inherited as an autosomal dominant trait, with complete penetrance and variable expressivity, but about one-third of the cases do arise spontaneously. The male-to-female preponderance is 3:1. [2],[3]

With the advent of molecular technology, the gene for the Crouzons syndrome could be localized to the Fibroblast Growth Factor Receptor II gene (FGFR2) at the chromosomal locus 10q 25.3-q26, and more than 30 different mutations within the gene have been documented in separate families. [8]

Premature fusion of the cranial sutures results in craniosynostosis, and this initiates changes in the brain and adjoining structures, such as increase in intracranial pressure, reduced orbital volume, exophthalmos (proptosis), severe maxillary hypoplasia and occlusal derangement. [5]

Complications of Crouzons syndrome may include conjunctivitis or keratitis, luxation of the eye globes, exotropia, poor vision due to optic atrophy and corneal injury, blindness. Frequent headaches, seizures, mental deficiency, increasing hydrocephaly, conductive hearing deficit, upper airway obstruction develop secondary to septal deviation, midnasal abnormalities, choncal abnormalities and nasopharyngeal narrowing, Others include nystagmus, iris co­loboma, aniridia, anisocoria, corectopia, microcornea, megalocornea, keratoconus, cataract, ectopia lentis, blue sclera and glaucoma. [3]

Ultrasonic prenatal diagnosis of exophthalmos has been reported, which might give a clue regarding the forthcoming developing problems. Early recognition is essential to guide growth and development of the face and cranium. [6]

Management of such a problem requires multidisciplinary approach. Treatment includes measures to minimize intracranial pressure and secondary calvarial deformities. Orthodontic treatment with subsequent orthognathic surgical intervention has to be followed in managing the dentofacial deformity.

Prognosis depends on severity of malformation. Innovations in craniofacial surgery have enabled patients to achieve their full potential by maximizing their opportunities for intellectual growth, physical competence and social acceptance. Patients usually have a normal lifespan.

 
   References Top

1.Cohen MM Jr. Craniosynostosis and syndromes with craniosynostosis: Incidence, genetics, penetrance, variability and new syndrome updating. Birth Defects Orig Artic Ser 1979;15:13-63  Back to cited text no. 1    
2.Cohen MM Jr. Craniosynostosis: Diagnosis, evaluation and manage­ment. Raven Press: New York; 1986  Back to cited text no. 2    
3.Syndromes of the head and neck. In : Gorlin RJ, Cohen MM, Levin LS, editors. 3 rd ed. Oxford University Press: 1990. p. 516-26  Back to cited text no. 3    
4.Cohen MM Jr. Craniosynostosis update 1987. Am J Med Genet Suppl 1988;4:99-148  Back to cited text no. 4    
5.Oral pathology- Clinical pathologic correlations. 3 rd ed. Regezi JA, Sciubba JJ, WB Saunders Company: 1999. p. 436-7  Back to cited text no. 5    
6.Atkinson FR. Hereditary craniofacial dysostosis or Crouzon's disease. Med Press Circular 1937;195:118-24  Back to cited text no. 6    
7.Golabi M. Radiographic abnormalities of Crouzon syndrome. A survey of 23 cases. Proc Greenwood Genet Ctr 1984;3:102  Back to cited text no. 7    
8.Jeftha A, Stephen L, Morkel IA, Beighton P. Crouzonodermoskeletal syndrome. J Clin Pediatr Dent 2004;28:173-6  Back to cited text no. 8    


    Figures

  [Figure - 1], [Figure - 2], [Figure - 3], [Figure - 4]


This article has been cited by
1 An insight into the spectrum of apert syndrome - a case study
Narang, R.S. and Sandhu, S.V. and Padda, S. and Sandhu, J. and Manchanda, A.S.
Internet Journal of Pediatrics and Neonatology. 2011; 13(1)
[Pubmed]
2 Cephalometric analysis of hard and soft tissues in a 12-year-old syndromic child: A case report and update on dentofacial features of Crouzon syndrome
Nagaraju, K. and Ranadheer, E. and Suresh, P. and Tarun, S.P.
Journal of Indian Society of Pedodontics and Preventive Dentistry. 2011; 29(4): 315-319
[Pubmed]
3 Crouzon syndrome: Etiopathogenesis and clinical manifestations [Eziopatogenesi e manifestazioni cliniche della sindrome di Crouzon: revisione della letteratura]
Maspero, C. and Giannini, L. and Iazzetti, F. and Tronca, S. and Farronato, G.
Mondo Ortodontico. 2010; 35(5): 249-260
[Pubmed]



 

Top
Print this article  Email this article
Previous article Next article

    

 
  Search
 
   Next article
   Previous article 
   Table of Contents
  
 
    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Article in PDF (67 KB)
    Citation Manager
    Access Statistics
    Reader Comments
    Email Alert *
    Add to My List *
* Registration required (free)  


    Abstract
    Introduction
    Case Report
    Discussion
    References
    Article Figures

 Article Access Statistics
    Viewed7944    
    Printed188    
    Emailed11    
    PDF Downloaded627    
    Comments [Add]    
    Cited by others 3    

Recommend this journal


Contact us | Sitemap | Advertise | What's New | Copyright and Disclaimer 
 © 2005 - Journal of Indian Society of Pedodontics and Preventive Dentistry | Published by Wolters Kluwer - Medknow 
Online since 1st May '05