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Background: Fibrous dysplasia (FD) is a developmental anomaly of unknown pathogenesis in which normal bone is replaced by an abnormal fibrous tissue. The process may affect a single bone (monoostic form of fibrous dysplasia) or multiple bones (polyostic form). The skull is the second most common site of FD and comprises 25% of cases. The purpose of this article is to evaluate the usefulness of CT and MRI in diagnostics of cranial fibrous dysplasia lesions. Material/Methods: We analyzed 13 CT and 6 MR examinations performed in 9 females aged 40 to 73 years (mean age 54.7 years). Four patients were referred to the examinations with a diagnosis of fibrous dysplasia, 3 others -with a suspicion of neoplastic disease and 2 patients - with no preliminary diagnosis. Clinical symptoms included: headache, deformity and asymmetry of craniofacial region. Results: Fibrous dysplasia lesions were unilateral in 8 patients; in one patient they were bilateral. The sphenoid and ethmoid bones were the most common single bones involved by FD lesions. Among 9 cases of FD, orbital involvement was found in 8, nasal sinuses and cavity involvement in 6 and intracranial extension in 3 patients. Conclusions: CT and MR are useful in confirming the diagnosis of FD and especially in evaluating the extent of the disease.
Poza zaznaczonymi wyjątkami, licencja tej pozycji opisana jest jako Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 4.0 Międzynarodowa