Two Cases of Pediatric Facial Bone Fibrous Dysplasia

Nakai Yoshinori, Yane Katunari

doi:10.7248/jjrhi.58.229

<p>Fibrous dysplasia is classified as either monostotic fibrous dysplasia or polyostotic fibrous dysplasia. It is most frequently found in facial bones where monostotic fibrous dysplasia is four times more frequent than polyostotic fibrous dysplasia. We report 2 cases of fibrous dysplasia in children. Case 1) A 10-year-old boy with a headache whose MRI showed a tumor on the left upper jaw visited our hospital. No physical findings other than a mild swelling of the left cheek were observed. CT findings showed a glassy bone thickening on both the left upper jaw sinus and lateral wall. For a definitive diagnosis, tissues were biopsied under general anesthesia, and the histopathological finding was fibrous dysplasia. Since no accumulation by bone scintigraphy was found except for the maxilla, the lesion was diagnosed as monostotic fibrous dysplasia. Case 2) A 12-year-old boy was seen by a local doctor who photographed the paranasal sinus X-P. The child was admitted to our hospital because of a left upper jaw bone thickening. As in case 1, there were no physical findings other than left cheek swelling. Based on in paranasal CT imaging, the bone thickening of the glass frill was observed on the skull base to the left face and lower jaw. Bone scintigraphy was found to accumulate in the thickened area of CT, but no accumulation was found in other sites. Since the pathological examination result of tissue collection under general anesthesia was fibrous dysplasia, it was diagnosed as polyostotic fibrous dysplasia. No findings other than cheek swelling were observed in both cases, and an increase in bone hypertrophy was not observed, so it is under observation.</p>

Two Cases of Pediatric Facial Bone Fibrous Dysplasia

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