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KMID : 0603219960030010066
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Korean Journal of Rhinology
1996 Volume.3 No. 1 p.66 ~ p.71
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Fibrous Dysplasia of Paranasal Sinuses : Review of Six Cases
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Heung Man Lee
Seung Cheol Oh/Sang Hag Lee/Jong Ouck Choi
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Abstract
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Fibrous dysplasia is a benign disorder of unknown origin that develops slowly over a few years in which normal bone has been replaced by fibrous tissue. The incidence of the disease is 2.5% of whole bone tumors and 7% of benign bone tumors. The maxillary bone is identified as the most common site in the facial bones and the frontal and sphenoid bones as the most common sites in calvaria involvement. The polyostotic type is rare compared to the monostotic type. To our knowledge, there have been seven cases of monostotic fibrous dysplasia in the maxillary bone and there are no reports in the sphenoid, ethmoid bone in Korean literature. Therefore we report six cases of fibrous dysplasia arising from paranasal sinuses with description of the clinical aspects, radiological findings, diagnosis, and management of this disorder. We have treated six patients with fibrous dysplasia in the paranasal sinuses between 1990 and 1995. They were two males and four females of ages between 12 and 38 years. In all patients, except for one case, the operation was performed and diagnosis of fibrous dysplasia was made from surgical specimens. Blood testing showed no abnormal findings except increased level of alkaline phosphatase in three cases. CT of the paranasal sinuses revealed a pagetoid mixed density in four cases and a sclerotic diffuse high density in two cases. RI scintigraphy was performed in two cases and showed abnormal 99mTC-DTPA accumulation in all patients. The sites of involvement were maxillary bone, ethmoid bone, and sphenoid bone. Types included one case of polyostotic fibrous dysplasia and five cases of monostotic fibrous dysplasia. Of the five cases undergone surgery, three cases were performed total resection and two cases were performed partial resection. Postoperative follow-up was carried out from ten months to five years and up to date, no signs of recurrence were observed.
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KEYWORD
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Fibrous dysplasia, Paranasal sinuses, Surgical treatment, RI scintigraphy.,
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