Fibrous Dysplasia of the Orbit in a 5-Year-Old Girl

 The aim of the present study was to describe a case oforbital fibrous dysplasia in a very young child.Case report: A 5-year-old girl presented with unilateral, painless,slowly progressive proptosis of the left eye and inferotemporalglobe displacement from about 1 year ago. The visual acuity inboth eyes was 20/20. The general physical examination was normal.Computed tomography (CT scan) revealed thickening and deformityof the orbital walls. Lateral orbitotomy and biopsy were performedand were compatible with fibrous dysplasia.

  Craniofacial fibrous dysplasia usually occurs in thesecond decade of life, but it can also rarely present in the earlyyears of life. Therefore, fibrous dysplasia should be considered asa differential diagnosis of proptosis or globe displacement in theearly years of life.Keywords: Fibrous; Dysplasia; Orbit; Child; Iran.