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CASE REPORT Table of Contents   
Year : 2005  |  Volume : 16  |  Issue : 4  |  Page : 151-152
Maxillofacial fibrous dysplasia

Department of Oral Pathology and Microbiology, Manipal College of Pathology and Microbiology, U.P. King George's University of Dental Science, Lucknow, 226003-Uttar Pradesh, India

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Fibrous dysplasia is a non- neoplastic hamartomatous developmental fibro osseous lesion of bone. This paper provides a brief overview of fibrous dysplasia in a historic perspective and highlights the controversies in fibrous dysplasia seen in the cranio- maxillofacial lesions. A case report of a young woman is presented who was diagnosed as having maxillofacial fibrous dysplasia, thereby making an attempt to use this term in cases with relatively limited facial bone disease.

Keywords: Fibrous Dysplasia; Maxilla; Mandible; Maxillofacial

How to cite this article:
Mahajan S, Kamboj M, Baoz K. Maxillofacial fibrous dysplasia. Indian J Dent Res 2005;16:151-2

How to cite this URL:
Mahajan S, Kamboj M, Baoz K. Maxillofacial fibrous dysplasia. Indian J Dent Res [serial online] 2005 [cited 2023 May 30];16:151-2. Available from:

   Introduction Top

Fibrous Dysplasia is defined as "a benign lesion, presumably developmental in nature, characterized by the presence of fibrous connective tissue with a characteristic whorled pattern and containing trabeculae of immature non-lamellar bone"[1]. Eversole defines fibrous dysplasia of craniofacial bones as "a benign, non-neoplastic intranedullary cellular proliferation of fibroblasts, with formation of irregular trabeculac of bone or ovoid calcifications that shows indistinct, non-encapsulated borders"[2].

As early as 1891, von Recklinghausen first described fibrous dysplasia ofbones under the term'Osteitis fibrosacystica'. Freund in 1934 named it as 'osteitis fibrosa localizata/disseminata'. Jacobson in 1937 in his extensive review of jaw bone diseases described it as 'Fibrous Dystrophy' whereas Albright (1937) described it as Albright's syndrome, which is a triad of polyostotic fibrous dysplasia, cutaneous pigmentation and endocrine disturbances. Lichtenstein in 1938 coined the tenn 'Fibrous Dysplasia of bone' and described it as a distinct entity of unknown etiology. Lichtenstein and Jaffe' in 1942, reported different clinical manifestations for fibrous dysplasia that is solitary (monostotic) and multiple (polyostotic) forms. In 1958, Jaffe' suggested the term 'Fibro-osseous Dysplasia' for fibrous dysplasia [3],[4],[5],[6],[7],[8].

   Case report Top

A 35-year-old woman visited the College of Dental Surgery Mangalore with a chief complaint of difficulty in placement of partial denture and pain while wearing the lower denture for the last one year. Patient was unaware of anything unusual until she visited a local dentist six months ago who observed a swelling at the denture site. The dentist took a biopsy from the mandibular lesion and referred the patient to our institution for expert management. The biopsy report came as cemento-osseous lesion.

Oral examination revealed the presence of a swollen edentulous area extending linearly from lower left second premolar to the right first molar. Another swelling was seen in the left posterior region of maxilla extending in buccal plate of upper left first molar up to upper left third molar. Both the swellings were painless in growth. The patient complained of pain in mandible on wearing the partial denture.

Orthopantomo graph revealed radio opacity in relation to the upper left posterior (extending in buccal plate of the left first molar up to the left third molar) region. Another radioluscency with ill-defined borders and areas ofradio opacity was seen between lower left second premolar and right first molar. Margins of this lesion in the radiographs appeared toben on-distinct [Figure - 1]

Surgical recontoming of the maxilla and a segmental resection of the mandible was done and the resected bony specimen and spicules were sent to the Department of Oral Pathology Mampal College of Dental Sciences, Mangalore, India for histopathological examination. The histopathological picture of the decalcified sections revealed coarse bony trabeculae with osteocytes, absence of osteoblastic rimming around the trabeculae scattered in a cellular fibrous tissue stroma [Figure - 2].

Thus based on the clinical, radiological and histological findings the patient could be diagnosed as having fibrous dysplasia

   Discussion Top

Historically, the concept of a monostotic form of fibrous dysplasia limited to maxilla has been widely accepted and published. But in reality, it is not true. There is said to be an insidious extension into adjacent facial bones, reminiscent of locally infiltrative spread of a neoplasm from its primary site [1], [6]. hi this particular case it could be thought that the lesion extended from maxilla to mandible. This peculiar behaviour of fibrous dysplasia as reported by Lichtenstein, actually reflects a programmed "field effect" of abnormal osseous development in congenitally predisposed bone matrix [1].

Thus, it could be assumed that the abnormal maturation proceeds synchronously (though at varying rates) in the affected bones of the craniofacial complex, rather than centrifugally spreading outward from a point of origin. The silent or sub clinical disease, thus, likely exists in otherwise apparently normal appearing bones such as skull, facial or long bones as well.

Mina' supported a concept, which stated, "when a single bone (monostotic) is affected, it probably represents a forme fruste of the more severe form (polyostotic). He stated that the craniofacial bones affected by fibrous dysplasia are in the following order that is frontal> sphenoid> ethmoid> maxilla> mandible> zygoma> parietal> occipital> temporal [9].

Mandible, being an anatomically freestanding osseous unit, could be said to be affected by monostotic behaviour. But historical records do not go in favour of it, as several earlier diagnosed cases of monostotic fibrous dysplasiaof mandible were later diagnosed either as polyostotic fibrous dysplasiaorfewasossifying fibroma [1].

   Conclusion Top

Thus, the term "maxillofacial fibrous dysplasia" could be said to be a more fitting designation for patients with typical, relatively limited facial bone disease.

Craniofacial fibrous dysplasia could be used when there is extensive involvement of facial bones and bones of the skull[1].This patient could be classified under maxillofacial fibrous dysplasia giving a more definitive picture ofthe area affected in the body.

   References Top

1.Lionel G, Deborah C: Fibro-osseous Diseases oral and Maxillofacial Surgery Clinics of North America: Surgical Pathology, Nov: 551-561,1997.  Back to cited text no. 1    
2.Harri SWH, Dudley RH, Barry RJ: The natural history of fibrous dysplasia: An orthopaedic, pathological and roentgenographic study, J Bone Joint Sung Am, 44-A: 207-233, 1962.  Back to cited text no. 2    
3.Gross CW, Montgomery WW: Fibrous dysplasia and malignant degeneration, Arch Otolaryng,85:653-657,1967.  Back to cited text no. 3    
4.Reed RJ, Hagy DM: Benign non odontogenic fibro-osseous lesions of the skull­Report of two cases oral Surg Oral Med Oral Patho1,19-2:214-227,1965.  Back to cited text no. 4    
5.Chen YR, Noordhoff MS: Treatment of craniomaxillofacial fibrous dysplasia:How early and how extensive?, Plast Reconstr Surg, 86­5:835-42; discussion 843-4,1990.  Back to cited text no. 5    
6.Waldron CA: Fibro-osseous lesions of the jaws, J Oral Maxillofac Surg,43: 249­262,1985.  Back to cited text no. 6    
7.Waldron CA: Fibroosseous lesions of the jaws, J Oral Maxillofac Surg, 51: 828-835,1993.   Back to cited text no. 7    
8.Makek MS: So Called " Fibro-osseous Lesions" of Tumourous origin, JCranio Max Fac Surg,15:154-168,1987.  Back to cited text no. 8    
9.Mirra JM, Picci P, Rosen G, Gold RH Bone tumors: clinical, radiologic and pathologic correlations, (1st ed.), Lea and Febiger, Philadelphia, 368-372,1989.  Back to cited text no. 9    

Correspondence Address:
Mala Kamboj
Department of Oral Pathology and Microbiology, Manipal College of Pathology and Microbiology, U.P. King George's University of Dental Science, Lucknow, 226003-Uttar Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-9290.29905

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[Figure - 1], [Figure - 2]

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