Cases reported "Fractures, Spontaneous"

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1/340. Oncogenic osteomalacia presenting as bilateral stress fractures of the tibia.

    We report on a patient with bilateral stress fractures of the tibia who subsequently showed classic biochemical features of oncogenic osteomalacia. Conventional radiographs were normal. MR imaging revealed symmetric, bilateral, band-like low-signal lesions perpendicular to the medial cortex of the tibiae and corresponding to the only lesions subsequently seen on the bone scan. A maxillary sinus lesion was subsequently detected and surgically removed resulting in prompt alleviation of symptoms and normalization of hypophosphatemia and low 1,25-(OH)2 vitamin D3. The lesion was pathologically diagnosed as a hemangiopericytoma-like tumor. patients with oncogenic osteomalacia may present with stress fractures limited to the tibia, as seen in athletes. The clue to the real diagnosis lies in paying close attention to the serum phosphate levels, especially in patients suffering generalized symptoms of weakness and not given to unusual physical activity.
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2/340. adult onset of multifocal eosinophilic granuloma of bone: a long-term follow-up with evaluation of various treatment options and spontaneous healing.

    We report a case of multifocal-monosystemic Langerhans cell histiocytosis (LCH), formerly usually referred to as eosinophilic granuloma (EG) of bone. The condition developed in a 36-year-old man. A notable infrequent thoracic spine location and two successive distinct costal lesions were observed. Both the first costal site and the vertebral location healed spontaneously; the second costal lesion underwent biopsy resection. The patient's disease course with an 8-year follow-up is discussed with reference to various treatment options, emphasising in selected cases a watchful conservative approach, in view of the widely documented potential for spontaneous healing.
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3/340. Unusual longitudinal stress fractures of the femoral diaphysis: report of five cases.

    We present five cases of a distinctive type of longitudinal stress fracture of the upper femoral shaft in which the fracture line is parallel to the outer surface of the bone, in contrast to the perpendicular orientation to the cortical surface in previously reported cases of diaphyseal stress fractures. In two cases the fracture recurred after 15 and 18 months, respectively.
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4/340. Pathologic odontoid fracture and benign fibrous histiocytoma of bone.

    We present the case of a 44-year-old female patient, who sustained an odontoid fracture after a minor trauma (uncomplicated fall). The radiologic evaluation revealed a skeletal tumor of the second cervical vertebra together with a fracture line at the base of the odontoid process of the axis. The patient underwent surgery, the tumor was resected and the odontoid was stabilised using an autologous cortico-cancellous bone graft and a halo fixator. Histologic examination revealed benign fibrous histiocytoma, which is reported to be a very rare skeletal tumor.
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5/340. Enchondroma as a cause of midfoot pain.

    Enchondroma is a common bone tumor of the foot. It is often reported in the phalanges and distal metatarsals. The authors, however, present a rare case study of two patients with enchodromas as the cause of midfoot pain. One case presented in the lateral cuneiform which to the authors' knowledge is the first reported case in the literature. Two cases are presented with their surgical management including autogenous calcaneal graft and follow-up.
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6/340. Musculoskeletal manifestations of osteomalacia: report of 26 cases and literature review.

    OBJECTIVE: This study was undertaken to describe the musculoskeletal manifestations in a selected population of 26 patients with biopsy-proven osteomalacia (OM) and provide a literature update. methods: The 26 patients with biopsy-proven OM were selected from a total number of 79 patients who underwent anterior iliac crest biopsy. The diagnosis of OM was confirmed by the presence of an osteoid volume greater than 10%, osteoid width greater than 15 microm, and delayed mineralization assessed by double-tetracycline labeling. RESULTS: OM was caused by intestinal malabsorption in 13 patients, whereas six other patients presented with hypophosphatemia of different causes. Five elderly patients presented with hypovitaminosis D, and in two patients the OM was part of renal osteodystrophy. Twenty-three patients presented with bone pain and diffuse demineralization, whereas three other patients had normal or increased bone density. Characteristic pseudofractures were seen in only seven patients. Six of the 23 patients with diffuse demineralization had an "osteoporotic-like pattern" without pseudofractures. Prominent articular manifestations were seen in seven patients, including a rheumatoid arthritis-like picture in three, osteogenic synovitis in three, and ankylosing spondylitis-like in one. Two other patients were referred to us with the diagnosis of possible metastatic bone disease attributable to polyostotic areas of increased radio nuclide uptake caused by pseudofractures. Six patients also had proximal myopathy, two elderly patients were diagnosed as having polymalgia rheumatica, and two young patients were diagnosed as having fibromyalgia. One of the patients who presented with increased bone density was misdiagnosed as possible fluorosis. CONCLUSION: OM is usually neglected when compared with other metabolic bone diseases and may present with a variety of clinical and radiographic manifestations mimicking other musculoskeletal disorders.
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7/340. Pathological fracture in non-ossifying fibroma with histological features simulating aneurysmal bone cyst.

    A 12-year-old-girl presented with a fracture of an osteolytic lesion of the distal radius. A 7-year-old girl presented with a fracture of an osteolytic lesion of the femoral shaft. In both cases it was a non-ossifying fibroma with fracture misdiagnosed at pathology as aneurysmal bone cyst. Fractures through non-ossifying fibromas may alter the histological pattern of the initial lesion in two ways: firstly, by the presence of blood pigments due to the fracture, and secondly, by formation of new bone. Radiological-pathological correlation is essential to avoid histological errors after pathological fracture in a non-ossifying fibroma.
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8/340. Unusual finding after contrast injection of a solitary bone cyst. A case report.

    Injection of radiopaque contrast into a solitary bone cyst (SBC) prior to methylprednisolone acetate (MPA) injection has been previously reported. We report an unusual finding during the injection of radiopaque contrast in the treatment of one case of SBC of the femur: a bicameral appearance of the cyst was observed; no filling of the proximal cavity occurred and immediate perfusion of the femoral vein with contrast was noted. In cases of SBC such as this one, percutaneous autologous marrow or corticosteroid injection may fail to be effective. Furthermore there exists the potential risk of fat embolus secondary to bone marrow injection. Based on these findings in the case reported, we suggest that contrast injection should be performed prior to bone marrow or corticosteroid injection in order to evaluate both the venous drainage of the cyst and its degree of loculation.
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9/340. Severe complications of ulcerative colitis after high-dose prednisolone and azathioprine treatment.

    We report a rare case of ulcerative colitis (UC) associated with methicillin-resistant staphylococcus aureus (MRSA) and pseudomonas aeruginosa infections in multiple organs, and with compressive fracture from osteoporosis after the administration of high-dose prednisolone and azathioprine. A 25-year-old man had been treated with high-dose prednisolone for UC. He suddenly experienced severe lumbago, which prevented him from walking. Plain X-ray demonstrated compressive fractures of the thoracic and the lumbar vertebrae, which were thought to be due to osteoporosis as a side effect of the high-dose prednisolone. At this admission, in another hospital, he also had a bloody discharge from the rectum, and azathioprine was started; however, the patient's condition still did not show any improvement. The total doses of azathioprine and prednisolone he had received were 3150 mg and more than 15,000 mg, respectively. Considering the presence of the serious complications, surgical intervention was the treatment selected. culture study revealed MRSA in the feces and nasal cavity, and P. aeruginosa in the feces and urine. vancomycin hydrochloride and gentamicin were administered, and were effective, with a subsequent negative culture study. Subtotal colectomy with mucus fistula was performed. After the operation, culture studies remained negative. Major steroid side effects such as bone fracture and osteoporosis should be considered as an indication for surgery in UC patients. MRSA and P. aeruginosa are a menace, especially for UC immunosuppressed patients on steroid or immunosuppressive therapy. When these bacteria are detected, there should be prompt and adequate antimicrobial therapy against the organisms and the immunosuppressive therapy should be immediately discontinued. We conclude that surgical therapy should be considered in the earlier stage for patients with intractable UC, rather than continuing long-term administration of steroid or azathioprine, which may lead to serious complications.
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10/340. A case of sternal insufficiency fracture.

    We report a case of insufficiency fracture of the sternum in a 70-year-old female patient with a review of the literature. She complained of sudden onset chest pain and aggravating dyspnea. She has been managed with corticosteroid due to chronic obstructive pulmonary disease for 15 years. diagnosis of sternal insufficiency fracture presented with thoracic kyphosis was made on the basis of absence of trauma history, radiologic findings of lateral chest radiograph, bone scintigraphy and chest computed tomography. Thoracic kyphosis and osteoporosis secondary to menopause, corticosteroid therapy and limited mobility due to chronic obstructive pulmonary disease were considered as predisposing factors of the sternal insufficiency fracture in this patient.
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