Cases reported "Bone Diseases"

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11/630. Meniscal cysts causing bone erosion: retrospective analysis of seven cases.

    Meniscal cysts of the knee are common and well evaluated by magnetic resonance (MR) imaging, a method that also reveals the frequently associated meniscal tear. diagnosis of meniscal cysts with routine radiography is difficult, although bone erosions are reported as a very rare manifestation of such cysts. Our retrospective study describes seven patients in whom meniscal cysts were associated with adjacent erosion of bone.
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12/630. association of diffuse idiopathic skeletal hyperostosis (DISH) and calcification and ossification of the posterior longitudinal ligament.

    Diffuse idiopathic skeletal hyperostosis (DISH) is a common ossifying diathesis in middle-aged and elderly patients characterized by bone proliferation along the anterior aspect of the spine and at extraspinal sites of ligament and tendon attachment to bone. Four patients with DISH revealed extensive calcification and ossification of the posterior longitudinal ligament in the cervical spine. review of cervical spine radiographs in 74 additional patients with DISH demonstrated bony hyperostosis of the posterior aspect of the vertebrae in 41%, posterior spinal osteophytosis in 34%, and posterior longitudinal ligament calcification and ossification in 50%. These ligamentous findings, which have previously been described almost exclusively in Japanese people, appear to be an additional skeletal manifestation of DISH.
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13/630. Determination of extent and activity with radionuclide imaging in erdheim-chester disease.

    erdheim-chester disease usually involves the diaphyseal and metaphyseal regions of tubular bones and various visceral organs. A 56-year-old woman presented with the histologically confirmed diagnosis of erdheim-chester disease. A Tc-99m MDP bone scan revealed the entire extent of the skeletal disease and showed unusual involvement of the epiphyses and axial skeleton. In addition to MRI, a Ga-67 citrate scan including SPECT showed extensive soft-tissue infiltration of different organs. Both Tc-99m MDP and Ga-67 scintigraphy are useful tools in determining the distribution of this rare disease.
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14/630. Bone amyloidoma in a diabetic patient with morbid obesity.

    Bone localisations of amyloidosis are rare, usually diffuse and associated with myeloma. We report the case of a patient with massive obesity complicated by diabetes, hypertension, sleep apnea and liver steatosis, who complained of rapidly worsening bilateral polyradiculalgia of the lower limbs. After sufficient weight loss made nuclear magnetic resonance imaging feasible, a spinal tumour was visualised on the 5th lumbar vertebra, extending to soft tissues. Total excision was performed, and pathological studies revealed an amyloid bone tumour with no evidence of myeloma.
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15/630. Two sibs with an unusual pattern of skeletal malformations resembling osteogenesis imperfecta: a new type of skeletal dysplasia?

    We report a 6 year old boy with multiple fractures owing to bilateral, peculiar, wave-like defects of the tibial corticalis with alternative hyperostosis and thinning. Furthermore, he had Wormian bones of the skull, dentinogenesis imperfecta, and a distinct facial phenotype with hypertelorism and periorbital fullness. collagen studies showed normal results. His sister, aged 2 years, showed the same facial phenotype and dental abnormalities as well as Wormian bones, but no radiographical abnormalities of the tubular bones so far. The mother also had dentine abnormalities but no skeletal abnormalities on x ray. This entity is probably the same as that described in a sporadic case by Suarez and Stickler in 1974. In spite of the considerable overlap with osteogenesis imperfecta (bone fragility, Wormian bones, and dentinogenesis imperfecta), we believe this disorder to be a different entity, in particular because of the unique cortical defects, missing osteopenia, and normal results of collagen studies.
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ranking = 0.83474152050009
keywords = bone, dysplasia
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16/630. Imaging of calvarial eosinophil granuloma.

    We reviewed the imaging of four pathologically proven calvarial eosinophil granulomas. The diameter of the lesions ranged from 13 to 40 mm; three were biconvex, but the other had a collar-stud appearance. Two lesions were in the frontal and two in the parietal bone. On bone-window CT, a bevelled edge was seen in three cases and button sequestration in one, but no sclerotic rim was shown. Although one lesion had a low-density area, the lesions were slightly denser than grey matter. They were isointense with grey or white matter on T1-weighted MRI and gave heterogeneous high signal on proton-density and T2-weighted images. All enhanced markedly, with a less strongly enhancing portion within them. A tail of dural enhancement and reactive change in the overlying galea or temporal muscle were seen in all cases.
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17/630. pyoderma gangrenosum with liver, spleen and bone involvement in a patient with chronic myelomonocytic leukaemia.

    pyoderma gangrenosum is a neutrophilic dermatosis of unknown aetiology. Visceral involvement by pyoderma gangrenosum is rare, the lung being the most frequent site of extracutaneous disease. We describe a 73-year-old man with pyoderma gangrenosum and chronic myelomonocytic leukaemia in whom aseptic hepatosplenic abscesses and bony lesions were associated.
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18/630. Examination of tumor and tumor-like conditions of bone.

    Surgical pathology specimens composed of bone, ranging from core biopsy to limb amputation specimens, require special attention, processing, and often unique equipment. This readily translates into additional handling steps and time, especially when one factors in clinical correlation with the surgeon and radiologic review of all images with a knowledgeable musculoskeletal radiologist. When these factors are superimposed on the rarity of these lesions in routine practice, it is not surprising that most trainees, as well as seasoned pathologists, are wary of these lesions. In this report, we use a case of osteofibrous dysplasia (Campanacci's disease) to demonstrate the dissection of such a surgical specimen and complete the report with a brief discussion of the entity.
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ranking = 0.83649998054495
keywords = bone, fibrous dysplasia, dysplasia
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19/630. osteoradionecrosis of the hyoid bone: a report of 3 cases.

    PURPOSE: osteonecrosis of the hyoid bone is an uncommon disease that has only been described occasionally in the literature. MATERIALS AND methods: We report 3 cases of osteonecrosis of the hyoid bone after radiation therapy for carcinoma at various sites in the head and neck region. RESULTS: Imaging computed tomography (CT) scans were performed for all 3 cases and did aid in the diagnosis. In 1 case, a 201thallium scintigraphy and a bone scan (99mtechnetium-diphosphonate) were performed and this confirmed the diagnosis of osteoradionecrosis. CONCLUSION: osteoradionecrosis of the hyoid bone may be misdiagnosed as recurrent neoplasm. Although recurrent or persistent neoplastic disease must initially be ruled out, it is subsequently important to correctly identify osteonecrosis of the hyoid bone, because its surgical treatment is simple and the prognosis is good.
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20/630. osteoradionecrosis of the cervical vertebrae and occipital bone: a case report and brief review of the literature.

    osteoradionecrosis (ORN) is a common complication of radiation therapy. We present the first case reported in the literature of ORN involving the first and second cervical vertebrae and occipital bone in a patient who was treated with surgery and radiation therapy 9 years prior for a TxN3M0 squamous cell carcinoma of the left neck arising from an unknown primary origin. A brief review of the pathophysiology and treatment of this pathological process is also presented. Although the mandible is the most commonly affected site in the head and neck, ORN may develop in an unusual location without any preceding trauma and display an insidious but rapidly progressive course. The pathophysiology of ORN is believed to be a complex metabolic and homeostatic deficiency created by radiation-induced cellular injury and fibrosis, which is characterized by the formation of hypoxic, hypovascular, and hypocellular tissue. The irradiated bone loses its capability to increase the metabolic requirements and nutrient supply required to replace normal collagen and cellular components lost through routine wear. This results in tissue breakdown and the formation of a chronic nonhealing wound. infection plays only a contaminant role, with trauma being a possible initiating factor. diagnosis of ORN begins with a complete physical examination, including fiberoptic examination and biopsy of any suspicious lesion to eliminate the possibility of recurrent tumor. Treatment of ORN commonly requires the debridement of necrotic bone and hyperbaric oxygen therapy. The head and neck surgeon must possess a high degree of suspicion to promptly diagnose ORN and initiate early treatment. Because of similarities in clinical presentation, the most important step in the initial management of suspected ORN is to eliminate the possibility of tumor recurrence or a new primary.
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keywords = bone
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