1/21. hypocalcemia due to spontaneous infarction of parathyroid adenoma and osteomalacia in a patient with primary hyperparathyroidism.A 49 year-old Japanese woman had subjected enlargement of a cervical tumor, and also suffered two bone fractures in 2 years. The cervical tumor had enlarged further in the month prior to admission, becoming warm and tender. Endocrinological examination revealed that the serum intact PTH concentration was remarkably high at 400 pg/mL despite the low serum calcium concentration, and that the serum vitamin Ds concentration was decreased. Bone roentgenograms revealed severe osteolytic changes compatible with osteitis fibrosa cystica and a pathologic fracture of the humerus. Under a diagnosis of primary hyperparathyroidism, parathyroidectomy was performed, followed by fixation surgery for the pathologic fracture. Histologically, the cervical tumor was a parathyroid chief-cell adenoma with massive necrosis, and the bone pathology by iliac bone biopsy revealed the existence of osteomalacia. She was treated with calcium, vitamins D and K2 and calcitonin after the surgery. This case is a rare condition manifesting hypocalcemia with catastrophic osteoporosis under the coexistence of spontaneous infarction of parathyroid adenoma with osteomalacia, suggesting that the clinical features of hyperparathyroidism are modified by both the autoparathyroidiectomy and the existence of osteomalacia due to vitamin d deficiency.- - - - - - - - - - ranking = 1keywords = fracture (Clic here for more details about this article) |
2/21. Posttransplant bone disease: a case illustrating dramatic improvements in bone density with vitamin D replacement therapy.Although bisphosponates are proposed as first-line treatment for posttransplant bone disease they are not optimal in all situations. A kidney transplant recipient developed hypercalcemia from mobilization of extraskeletal calcium. He had low serum parathyroid hormone and vitamin D; high calcium excretion; and normal calcium intake. Bone biopsy revealed severe osteomalacia. Bisphosphonates, used in the early treatment of acute hypercalcemia, were not indicated to treat osteomalacia. However, over several months serum calcium declined sufficiently to allow treatment of the bone disease with oral calcitriol. Dual-energy radiographic absorptiometry over the next 2 years documented dramatic improvements in bone density (percent of young-normal controls) : from 63 to 85%, at the lumbar spine; from 38 to 67%, at the femoral neck. This response to treatment could not have been achieved with an antiresorptive strategy. Optimal management of posttransplant bone disease requires a diagnostic approach, which considers all plausible contributing factors.- - - - - - - - - - ranking = 6.1197453258299keywords = femoral neck, neck (Clic here for more details about this article) |
3/21. vitamin d deficiency and severe hyperparathyroidism.The typical manifestations of severe hypercalcemia with osteitis fibrosa cystica have become exceedingly rare. We describe the case of a woman hospitalized for a tibial tumor with functional impotence, leading to a diagnosis of primary hyperparathyroidism (HPT I) associated with profound vitamin d deficiency. This 31-year-old woman was admitted, after two pregnancies complicated by the hellp syndrome. Preoperative laboratory values were as follows: calcemia 4.05 mmol/l (2.2-2.6); urinary calcium 30 mmol/24 h (1.25-7.5); parathormone (PTH) 1 195 pg/ml (10-60); and 25 OH-vitamin D 13 nmol/l (22-120). Specific MIBI uptake by the tibial lesion oriented the diagnosis towards a brown tumor. After surgical excision of a parathyroid adenoma and the brown tumor (associated with tibial fracture), calcemia fell to 1.55 mmol/l and normalized after three months. Urinary calcium fell to 0.1 mmol/24 h and remained low during the 2 years following surgery. Vitamin D levels rapidly normalized on supplementation (87 nmol/l). PTH levels fell markedly after surgery but remained higher than normal till 2 years after surgery despite normalization of calcemia three months after. Bone repair, estimated by means of bone densitometry, improved from preoperative Z-score values of - 6.54, - 5.20 and - 3.50 in the left femoral neck, right femoral neck and lumbar spine, respectively, to - 0.20, - 1.55 and - 0.28, respectively, one year after surgery. In conclusion, this case illustrates: 1) the severe osseous expression of HPT probably related to vitamin d deficiency; 2) specific MIBI uptake by the bone lesion, orientating the diagnosis towards a brown tumor; 3) the consequences of vitamin d deficiency on postoperative outcome, with transient severe initial hypocalcemia related to bone calcium avidity; 4) a possible link between HPT and the hellp syndrome.- - - - - - - - - - ranking = 12.572823984993keywords = femoral neck, fracture, neck (Clic here for more details about this article) |
4/21. Bilateral simultaneous combined intra- and extracapsular femoral neck fracture secondary to nutritional osteomalacia: a case report.A case of bilateral simultaneous combined extra- and intracapsular femoral neck fractures is presented in an adult Asian male patient suffering from nutritional osteomalacia. The radiological and biochemical findings were classical for osteomalacia with Looser's zones affecting the shoulder and the pelvic girdle. Treatment consisted of bed rest and calcium and vitamin-D replacement. The fractures healed without surgery. A high index of suspicion for nutritional osteomalacia among Asian immigrants especially among the low socio-economic classes is required in the Western community. early diagnosis and treatment prevents chronic disability and skeletal deformity.- - - - - - - - - - ranking = 294.24565491071keywords = femoral neck fracture, neck fracture, femoral neck, fracture, neck (Clic here for more details about this article) |
5/21. Fractures in biliary atresia misinterpreted as child abuse.Bone fractures in children without a history of injury are highly suspicious for child abuse. biliary atresia is a disorder associated with metabolic bone disease, and there are numerous reports of osteopenia, rickets, and/or fractures in this population. We report 3 cases of children with biliary atresia who had bony fractures as well as osteopenia whose caretakers were investigated for child abuse. Pediatricians should be aware of an increased incidence of fractures and overall prevalence of bone disease in this population.- - - - - - - - - - ranking = 1.3333333333333keywords = fracture (Clic here for more details about this article) |
6/21. Vignettes in osteoporosis: a road map to successful therapeutics.The diagnosis and management of osteoporosis have become increasingly more complex as new drugs enter the marketplace and meta-analyses of randomized trials with "other" agents become more prolific. We describe five common clinical scenarios encountered in the practice of osteoporosis medicine and various road maps that could lead to successful therapy. INTRODUCTION: The diagnosis and treatment of osteoporosis have changed dramatically in the last decade. Advances in diagnostic technologies and a range of newer treatment options have provided the clinician with a wide array of choices for treating this chronic disease. Despite the issuance of several "guidelines" and practice recommendations, there still remains confusion among clinicians about basic approaches to the management of osteoporosis. This paper should be used as a case-based approach to define optimal therapeutic choices. MATERIALS AND methods: Five representative cases were selected from two very large clinical practices (Bangor, ME; Pittsburgh, PA). Diagnostic modalities and treatment options used in these cases were selected on an evidence-based analysis of respective clinical trials. Subsequent to narrative choices by two metabolic bone disease specialists (SG and CR), calculation of future fracture risk and selection of potential alternative therapeutic regimens were reviewed and critiqued by an epidemiologist (DB). RESULTS: A narrative about each case and possible management choices for each of the five cases are presented with references to justify selection of the various therapeutic options. Alternatives are considered and discussed based on literature and references through July 2003. The disposition of the individual patient is noted at the end of each case. CONCLUSIONS: A case-based approach to the management of osteoporosis provides a useful interface between guidelines, evidence-based meta-analyses, and clinical practice dilemmas.- - - - - - - - - - ranking = 0.33333333333333keywords = fracture (Clic here for more details about this article) |
7/21. Symptomatic antiepileptic drug associated vitamin d deficiency in noninstitutionalized patients: an under-diagnosed disorder.Four noninstitutionalized patients, 4 months - 51 years old, presented out of 421 patients with epilepsy seen within a period of 2 years with serious symptoms of vitamin d deficiency secondary to chronic antiepileptic drug therapy. Presenting symptoms included exacerbation of seizure activity, status epilepticus, carpopedal spasms, fractures, osteomalacia, and rickets. All had low serum calcium and low vitamin D levels. Our experience supports the practice of screening patients on chronic antiepileptic drug therapy for vitamin D abnormalities.- - - - - - - - - - ranking = 0.33333333333333keywords = fracture (Clic here for more details about this article) |
8/21. Craniovertebral malformation complex in a child with Weismann-Netter-Stuhl syndrome.OBJECTIVE: Bowing of the legs is usually thrown into the basket of vitamin d deficiency rickets; therefore, a significant number of affected children can be misdiagnosed and improperly managed. This case illustrates how the careful clinical and radiological assessment of such a case can lead to the adequate understanding of its etiology. DESCRIPTION: We report a sporadic case of a 2-year-old male child who presented with radiological features that were compatible with Weismann-Netter-Stuhl syndrome. In addition, we observed craniovertebral malformation complex. He was of normal intelligence. To our knowledge, the combination of Weismann-Netter-Stuhl syndrome and presence of a hypoplastic occipitalized atlas and further C2-C3 fusion has not been reported before. The diagnosis of Weismann-Netter-Stuhl is discussed. Classically, Weismann-Netter-Stuhl syndrome is characterized by short stature, mental retardation (in some individuals), dural calcification, and anterior bowing of the tibiae. However, we believe that careful clinical and radiological examinations can reveal more striking data which might positively reflect on the whole process of management. COMMENTS: We postulate that the congenital limitations in neck movements in our patient developed because of the marked fusion of the hypoplastic and occipitalized atlas and simultaneous C2-C3 fusion. Therefore, if this form of malformation is disregarded, there may be involvement of the atlantoaxial structure, and this can possibly lead to serious neurological and even life-threatening complications. The use of CT scanning for the detection of such abnormalities can be remarkably important.- - - - - - - - - - ranking = 0.0027124317937852keywords = neck (Clic here for more details about this article) |
9/21. osteoporotic fractures and vitamin d deficiency.Case study: A caucasian woman aged 79 years, with a history of hypertension, hyperlipidaemia, and osteoarthritis, was referred for assessment of osteoporosis and generalised musculoskeletal pain after surgery for a right midshaft femoral fracture. Further history revealed she had suffered nonspecific musculoskeletal pain, particularly of the pelvic girdle, and unsteady gait for many weeks, but denied suffering any falls. She had limited mobility due to osteoarthritis of both knees. She had been mostly housebound and was on an animal product restricted diet in view of her history of hypercholesterolaemia. Initial x-rays confirmed an incomplete fracture of the midshaft of the right femur. She had an orthopaedic review, and subsequent bone scan and x-rays (Figure 1) revealed incomplete fractures of the midshaft of both femurs and the seventh rib. She was managed conservatively (alendronate 70 mg per week) and progress was closely monitored. Three weeks later, she presented to the emergency department with worsening right thigh pain and difficulty in weightbearing. x-rays revealed an extension of the right femoral fracture traversing the entire cortex that required surgery. physical examination revealed a mild thoracic kyphosis. There was no muscle or bone tenderness, proximal muscle weakness, or other significant abnormality. The plasma biochemistry revealed: mild hypocalcaemia (1.98 mmol/L), hypophoshataemia (0.7 mmol/L), raised alkaline phosphatase (ALP) (216 iu/L), low 25-hydroxyvitamin D (250HD) (22 nmol/L), and a mildly raised parathyroid hormone (PTH) level (8 pmol/L). Thyroid, renal, and liver functions were normal. The patient was treated with nine capsules of Ostelin 1000 per day, which was tapered over 8 weeks to one capsule. The repeat plasma 25OHD after 6 weeks was 56 nmol/L, and her musculoskeletal symptoms were completely resolved. There was normalisation of biochemical abnormalities and x-rays demonstrated healing of both femoral fractures. A bone biopsy taken at the time of surgery revealed an increased amount of osteoid. However, undecalcified bone sections were not examined, nor was quantitative histomorphometry performed. Dual energy X-ray absortiometry (DEXA) scan revealed a T-score of -3.32 at the hip and -1.38 at the lumbar spine. Corresponding Z-scores were -1.05 and -0.7.- - - - - - - - - - ranking = 3keywords = fracture (Clic here for more details about this article) |
10/21. Renal tubular acidosis type 2 with Fanconi's syndrome, osteomalacia, osteoporosis, and secondary hyperaldosteronism in an adult consequent to vitamin D and calcium deficiency: effect of vitamin D and calcium citrate therapy.OBJECTIVE: To describe a unique example of renal tubular acidosis type 2 (RTA 2) in conjunction with Fanconi's syndrome and osteomalacia consequent to vitamin D and calcium deficiency in an adult without underlying gastrointestinal disease. methods: We review the clinical, hormonal, histomorphometric, and micro-computed tomographic findings and the response to therapy with vitamin D and calcium in our patient. RESULTS: On admission, a 33-year-old African American woman had the following laboratory findings: serum ionized calcium 3.8 mg/dL (0.95 mmol/L), venous pH 7.26, bicarbonate 20 mEq/L, chloride 111 mEq/L, alkaline phosphatase 1,192 U/L (20.26 microkat/L) (normal, 40 to 136 U/L), 25-hydroxyvitamin D <5 ng/mL (<12 nmol/L) (normal, 10 to 60 ng/mL), parathyroid hormone 1,620 pg/mL (165.2 pmol/L) (normal, 10 to 60 pg/mL), aldosterone 68.4 ng/dL (1,894.7 pmol/L) (normal, 4.5 to 35.4 ng/dL), supine plasma renin activity 19.8 ng/mL per hour (5.35 ng/L per second) (normal, 0.5 to 1.8 ng/mL per hour), and aminoaciduria. A lumbar spine bone density T-score was -4.6, and a femoral neck T-score was -4.9. An undecalcified tetracycline-labeled bone biopsy specimen showed severe osteomalacia, severe osteoporosis, and peritrabecular fibrosis. A small intestinal biopsy revealed normal findings. Results of an ammonium chloride loading test and a bicarbonate infusion test were consistent with RTA 2. After 24 months of vitamin D and calcium therapy, results of serum and urine chemistry studies and bicarbonate infusion normalized. The lumbar spine T-score improved to -2.0, and the femoral neck T-score improved to -2.7. Bone biopsy specimens demonstrated resolution of the osteomalacia. CONCLUSION: Nutritional vitamin D and calcium deficiency may cause RTA 2, Fanconi's syndrome, and osteomalacia in adults as well as in children.- - - - - - - - - - ranking = 12.23949065166keywords = femoral neck, neck (Clic here for more details about this article) |
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