1/7. Fibrous dysplasia arising from the calcaneus.A case of an 18-year-old woman with fibrous dysplasia arising in the calcaneus, which is extremely rare, is reported, with the emphasis placed on differential diagnosis from low-grade central osteosarcoma. She had a severe pain in her left ankle after sprain. Plain radiographs showed a radiolucent lesion measuring 6.3 x 2.5 cm with a sclerotic margin in the left calcaneus. CT scans showed a well-defined lytic lesion with disruption of the lateral cortex and an ossification or calcification in its center. On MR imaging, the lesion had isointensities and high intensities on T1 and T2 weighted images, respectively, but its central portions showed lower intensities both on T1 and T2 weighted images. The lesion was enhanced with gadolinium except for the central portions. The specimen obtained by open biopsy consisted of fibrous tissue and foci of irregular woven bone. None of the nuclear atypia, mitoses, longitudinal stream of bone or invasive nature of growth was detected. The diagnosis of fibrous dysplasia was histologically made. The lesion was curetted and packed with autogenous bone chips. No evidence of recurrence was noted postoperatively.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
2/7. Osteofibrous dysplasia of the ulna.Osteofibrous dysplasia is a rare condition usually ffecting the tibiae and fibulae of males in the first two decades of life. Involvement at the ulna has also been reported in some cases. We describe an extensive, rapidly progressive lesion of the ulna in a three-year-old girl. The progression of the disease accelerated after a local marginal removal, and required extensive resection of the ulna with reconstruction using a fibular autograft. The particular features of this case are the change in the aggressive nature of the condition, which has not been previously reported. We believe that this is only the second recorded case of histologically proven involvement of the ulna.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
3/7. New tactics in bone grafting.The reconstruction of mandibular defects pose problems because of the nature of the facial skeleton. The mandibular moves continuously. In contrast, nasal and orbital bone grafts have to be immobilized.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
4/7. Cystic degeneration of fibrous dysplasia masquerading as sarcoma.An area of fibrous dysplasia of bone may undergo rapid enlargement which may be due to either cystic degeneration or malignant transformation. These complications may be clinically and radiologically indistinguishable and, unless both are borne in mind, incorrect management may follow. magnetic resonance imaging was used in one of our cases and was the only imaging modality to demonstrate the true nature of the condition.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
5/7. Polyostotic fibrous dysplasia involving the maxilla and mandible: report of case.The case presented here represents an aggressive form of polyostotic fibrous dysplasia. Because of lack of evidence to substantiate precocious puberty and abnormal pigmentation, Albright syndrome cannot be established. Because of the nature of this disease, its clinical course and prognosis are unpredictable. However, it is believed that continued growth of the lesion may necessitate additional surgery.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
6/7. Computed tomography of fibrous dysplasia.Skeletal fibrous dysplasia produces changes that are usually readily recognized on plain radiographs. Occasionally, routine radiography may not demonstrate the characteristic appearance of the disease. The density of abnormal bone in craniofacial fibrous dysplasia may preclude adequate assessment of areas where soft-tissue impingement may occur. Computed tomography (CT) is useful in demonstrating the amorphous "ground-glass" texture of the lesion and in defining the extent of craniofacial disease including impingement upon orbital structures. CT was useful in five patients with fibrous dysplasia in whom the nature or extent of involvement was not entirely clear.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
7/7. Familial florid cemento-osseous dysplasia--a case report and review of the literature.Cemento-osseous dysplasia is a fairly common lesion of the jaws originating from the elements of the periodontal ligament. Most lesions do not have a hereditary basis, however a few familial cases have been documented. This is the first report of the florid form of cemento-osseous dysplasia in an African family. The mother, son and one daughter exhibited multiple sclerotic cemental masses of the jaws with large tumour-like swellings in the symphyseal area of the mandible. In the case of the mother the lesions had become infected. The familial form of cemento-osseous dysplasia differs from the non-hereditary type in that the lesions present in children, all cases are florid in nature, there is no predilection for black females, the rate of growth appears to be more rapid and the symphyseal area of the mandible is most severely affected. The mode of transmission appears to be autosomal dominant with variable phenotypic expression.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |