1/76. Fibrous dysplasia and ossifying fibroma of the paranasal sinuses.Fibro-osseous lesions involving the paranasal sinuses, the mid-face and anterior skull base are uncommon. In addition, there appears to be no clear pathological or clinical classification that embraces the variety of lesions that exhibit such diverse pathological and clinical behaviour, yet may still be referred to as a fibro-osseous lesion. The diagnosis of fibrous dysplasia and ossifying fibroma is made on a combination of clinical, radiological and pathological criteria. This paper emphasizes the clinical and pathological differences between fibrous dysplasia and ossifying fibroma. The more aggressive clinical behaviour of the latter is highlighted and a more radical surgical approach is recommended. In contradistinction, fibrous dysplasia can exhibit a more benign behaviour and radical surgery is not always justified. A clinicopathological distinction between these two conditions is important from a management perspective despite the fact that they both may be encompassed under the 'umbrella' term fibro-osseous lesion.- - - - - - - - - - ranking = 1keywords = fibroma (Clic here for more details about this article) |
2/76. Primary extraosseous cemento-ossifying fibroma of the auricle.BACKGROUND: A mass of the auricle is uncommon. An enlarging lesion may be the result of a reactive process, or a benign or malignant neoplasm. The literature is reviewed, and a case of extraosseous cemento-ossifying fibroma of the auricle is presented. methods: A 22-year-old white man presented with a 3-month history of an enlarging 2 cm mass in the right concha cavum. An incisional biopsy demonstrated cemento-ossifying fibroma. The lesion was resected en bloc, and the patient did well. There is no evidence of recurrence. RESULTS: Pathological examination of the excised mass revealed a well-circumscribed but unencapsulated spindle cell lesion with foci of osteoid and cementum deposition. It did not involve the auricular cartilage, and there was no connection with the overlying epidermis. CONCLUSIONS: This is a case report of an extraosseous cemento-ossifying fibroma of the auricle. This benign tumor should be completely excised because local recurrence may otherwise result.- - - - - - - - - - ranking = 1.1666666666667keywords = fibroma (Clic here for more details about this article) |
3/76. CT and MRI of congenital sinonasal ossifying fibroma.We report a 9-year-old boy with a sinonasal ossifying fibroma, probably congenital, with atypical findings on CT and MRI. CT revealed a soft-tissue density mass in the sphenoethmoidal sinuses, nasal cavity and right maxillary sinus with a few foci of calcification and with remodelling and destruction of the adjacent facial bones. MRI showed high signal on T2- and intermediate signal on T1-weighted images. A thin, partly enhancing outer shell and some nonenhancing septa were visible on contrast-enhanced images. MRI also showed the tumour to extend into the anterior cranial fossa. Subtotal removal was performed. We compare our findings with reports in the literature and discuss the differences from fibrous dysplasia.- - - - - - - - - - ranking = 0.83333333333333keywords = fibroma (Clic here for more details about this article) |
4/76. Ossifying fibromyxoid tumor of soft parts: clinicopathologic, immunohistochemical and ultrastructural study of four cases.Four cases of uncommon soft tissue tumors were investigated histopathologically. All of them consisted of fibrous and myxoid components, and mature bone showed shell-like characteristics. Histological features revealed these tumors were well circumscribed by a thick collagenous fibrous capsule and composed of uniform-sized fusiform cells with eosinophilic cytoplasm and a round or oval nucleus in the myxoid matrix. An incomplete shell of mature bone with lamellar structure was also observed at the periphery. Immunohistochemical and ultrastructural studies were performed. The major component of the proliferating cells in the tumors had positive staining for vimentin, S-100 protein, neuron-specific enolase and synaptophysin. The myxoid matrix was stained by alcian blue and was digested completely by pretreatment with hyaluronidase. Electron microscopy showed the cytoplasm contained dense-core granules measuring 100-200 nm and abundant filaments of an intermediate size. It is suggested that these uncommon tumors might be diagnosed as the 'ossifying fibromyxoid tumor of soft parts' previously described by Enzinger et al., which were derived from peripheral nerve sheath tumors such as neurofibroma and myxoid neurofibroma.- - - - - - - - - - ranking = 0.33333333333333keywords = fibroma (Clic here for more details about this article) |
5/76. Cemento-ossifying fibroma presenting as a mass of the parapharyngeal and masticator space.We report a case of cemento-ossifying fibroma that presented as a large extraosseous mass in the masticator and parapharyngeal space. CT scanning and MR imaging showed a large extraosseous mass with central conglomerated, well-matured ossified nodules and fatty marrow. The central matured ossified nodules were of low density on CT scans and high signal intensity on T1- and T2-weighted MR images. Multiplanar reformatted CT scans revealed the origin of the mass to be at the extraction site of the right lower second molar tooth.- - - - - - - - - - ranking = 0.83333333333333keywords = fibroma (Clic here for more details about this article) |
6/76. The natural course of an ossifying fibroma. A case report.A patient with an ossifying fibroma in the mandible is presented, with a follow-up period of 38 years. The pathological findings and recommendations for therapy are discussed.- - - - - - - - - - ranking = 0.83333333333333keywords = fibroma (Clic here for more details about this article) |
7/76. Peripheral fibroma with calcification--a case report.A female patient aged 10 years reported with an intra oral swelling on the labial aspect of 32 & 33, appearing to originate from the marginal gingiva & interdental papilla. The swelling was pedunculated, mobile, non-tender, firm in consistency with an irregular surface. The colour of the gingiva was normal with slight ulceration. The swelling was excised & diagnosed histopathologically as peripheral cementifying/ossifying fibroma.- - - - - - - - - - ranking = 0.83333333333333keywords = fibroma (Clic here for more details about this article) |
8/76. Juvenile ossifying fibroma of the midface.Juvenile ossifying fibroma is an unusual maxillofacial fibro-osseous lesion characterized by cell-rich osteoid strands. A 7-year-old girl presenting with a massive juvenile ossifying fibroma of the maxilla resulting in facial deformity, orbital displacement, and extension into the anterior skull base is discussed. The importance of combining clinical, radiographic, and histopathological findings for the diagnosis and management of the tumor is discussed.- - - - - - - - - - ranking = 1keywords = fibroma (Clic here for more details about this article) |
9/76. Aggressive cemento-ossifying fibroma of the jaws.The cemento-ossifying fibroma is probably the most frequent fibro-osseous lesion seen by oral pathologists. Occasionally, reports of lesions behaving in an aggressive fashion appear in the literature. At the present time, the relationship if these "aggressive" lesions to the "usual" fibromas is unclear. Two cases of "aggressive" cemento-ossifying fibroma are reported. Certainly, clinical, radiological, and histological characteristics of aggressive and usual fibromas do coincide. There are, however, diverging features warranting separation of different forms. These mild differences may be detected during preoperative assessment of the lesion, allowing a diagnosis of aggressive form to be made.- - - - - - - - - - ranking = 1.3333333333333keywords = fibroma (Clic here for more details about this article) |
10/76. Juvenile ossifying fibroma of the mandible. An 8 year radiological follow-up.An 8-year follow-up of a juvenile ossifying fibroma in the left mandible of a 4-year-old boy is presented. The case demonstrated initial lack of radiological evidence of demarcation and subsequent eccentric enlargement, selective tooth displacement and a multilocular appearance in areas of active growth. An aneurysmal bone cyst and a decrease in the bone content was present in the excision specimen.- - - - - - - - - - ranking = 0.83333333333333keywords = fibroma (Clic here for more details about this article) |
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