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Fibrous dysplasia is a very rare [2] nonhereditary genetic disorder where normal bone and marrow is replaced with fibrous tissue, resulting in formation of bone that is weak and prone to expansion. As a result, most complications result from fracture , deformity, functional impairment, pain, and the impingement of nerves. [ 3 ]
The clivus is a shallow depression behind the dorsum sellae of the sphenoid bone. [3] It slopes gradually to the anterior part of the basilar occipital bone at its junction with the sphenoid bone. Synchondrosis of these two bones forms the clivus. The clivus extends inferiorly to the foramen magnum. [3]
All patients with known or suspected McCune–Albright syndrome should undergo a screening evaluation for fibrous dysplasia. [18] Nuclear medicine tests such as technetium-99 scintigraphy are the most sensitive way to detect fibrous dysplasia lesions. [19] CT scan of the skull is the most useful test to evaluate craniofacial fibrous dysplasia ...
Fibrous dysplasia causes bone thinning [13] and growths or lesions in one or more bones of the human body. These lesions are tumor-like growths that consist of replacement of the medullary bone with fibrous tissue, causing the expansion and weakening of the areas of bone involved. Especially when involving the skull or facial bones, the lesions ...
Polyostotic fibrous dysplasia is a form of fibrous dysplasia affecting more than one bone. [2] Fibrous dysplasia is a disorder where bone is replaced by fibrous tissue, leading to weak bones, uneven growth, and deformity. [3] McCune–Albright syndrome includes polyostotic fibrous dysplasia as part of its presentation. [4]
It comprises a majority of the cases of fibrous dysplasia (approximately 70–80%). [2] It is a rare bone disease characterized by the replacement of normal elements of the bone by fibrous connective tissue, [3] which can cause very painful swellings and bone deformities, and make bone abnormally fragile and prone to fracture. [4]
Fibrodysplasia ossificans progressiva, a rare disease in which fibrous tissue becomes ossified; Fibromuscular dysplasia, a disease characterized by the fibrous thickening of the renal artery; Fibrous dysplasia, a disease that causes growths or lesions in one or more bones of the human body
Dysplasia is any of various types of abnormal growth or development of cells (microscopic scale) or organs (macroscopic scale), and the abnormal histology or anatomical structure(s) resulting from such growth. [1] Dysplasias on a mainly microscopic scale include epithelial dysplasia and fibrous dysplasia of bone.