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Alternative Isotope Options for Amyloidosis Imaging: A Technologist's Perspective.

The recent pyrophosphate shortages can limit the availability of 99mTc-pyrophosphate scans for cardiac amyloidosis. However, another radiotracer is available: 99mTc-hydroxymethylene diphosphonate (HMDP). 99mTc-HMDP, widely available in the United States for bone scanning, has effectively been used in Europe to diagnose transthyretin amyloidosis. 99mTc-HMDP and 99mTc-pyrophosphate have comparable blood clearance and sensitivity. The imaging protocols for 99mTc-HMDP and 99mTc-pyrophosphate are similar, except 99mTc-HMDP is imaged 2-3 h after injection and whole-body imaging is optional. The inte

Tc-99m MDP uptake in cerebral infarction: comparison with Tc-99m DTPA brain scan and Tc-99m HMPAO brain SPECT.

Intracerebral uptake of methylene diphosphonate (MDP) was unexpectedly found in metastatic work-up of lung cancer. The history of the 52-year-old patient revealed a sudden onset of weakness of right limbs 10 days ago. Technetium-99m diethylenetriamine pentaacetate (Tc-99m DTPA) brain scan and Tc-99m hexamethyl propylene amine oxime (HMPAO) brain single photon emission computed tomography (SPECT) were done, and both showed abnormality in the left temporoparietooccipital region corresponding to the territory of left middle cerebral artery. A repeated bone scan four months later showed complete r

Eurysternum (extra-wide sternum)--a rarely recognized developmental anomaly. Scintigraphic appearances.

A rarely recognized extra-wide sternum was demonstrated by Tc-99m methylene diphosphonate bone scans in two adult patients. One patient was a 53-year-old man with prostate cancer who had no sternal symptoms or known sternal deformity. The second patient was a 41-year-old man with carcinoma of the lung whose extra-wide sternum was associated with a pectus excavatum deformity involving the lower half of the mesosternum (corpus sternum). A proper name for this developmental abnormality, "eurysternum" (eury-Greek word meaning broad; wide), is suggested. Two other patients, one with another type of

[Clinical and therapeutic aspects of maxillofacial lesions of Paget's disease].

Histopathology of mandibular swellings in two women aged 68 and 73 years respectively provided a diagnosis of Paget's disease. The complementary biological tests (phosphorus-calcium metabolism, alkaline phosphatase, hydroxyprolinuria) performed showed the increase in bone metabolism, while imaging techniques (conventional radiography, scintigraphy, CT scan) demonstrated numerous subclinical bony foci. Treatment of the facial deformity, if desirable esthetically or functionally necessary (alveolitis, osteitis) can only be surgical. If there is biological bone hypermetabolism, medical (diphospho

Radionuclide imaging in hip abnormalities.

The uptake of Tc-99m-diphosphonate was studied topographically and quantitatively on 258 diseased hips. For many diseased hips, bone scintigraphy provides items of information that complement the clinical, radiological, and biological data, with which it should always be compared. The localization, extent, and intensity of the uptake differ greatly according to the hip disorder studied, and depend not only on the cause of the lesion but also on its stage of evolution. Bone scintigraphy can shed light on the etiologic diagnosis of a painful hip at the beginning of its evolution, before definite

[Effect of drugs used for the prevention of urinary calculi recurrence on the growth and metabolism of young experimental animals].

In the animal experiment should be made clear whether several medicaments which stood the test in the prevention of relapses of urinary calculi may be used without any danger also in the infantile carrier of concrements. For this purpose young rabbits high doses of diuretics, kation exchangers, aluminium oxide, extracts of the root of rubia tinctorum, succinimide and diphosphonate were given. Growth and development of the animals were negatively influenced by the medicaments, with the exception of the kation exchanger and the extracts of the root of rubia tinctorum. Numerous animals died under

Risk of developing spontaneous MRONJ in fibrous dysplasia patients treated with bisphosphonates: a systematic review of the literature.

OBJECTIVE: The objective of this systematic review was to evaluate the risks of medication-related osteonecrosis of the jaw (MRONJ) in fibrous dysplasia (FD) and McCune-Albright syndrome (MAS) patients treated with bisphosphonates. METHOD AND MATERIALS: A systematic review of the literature was performed by searching PubMed and Embase databases using MeSH terms (fibrous dysplasia of bone, "fibrous dysplasia, polyostotic," osteonecrosis, jaw, therapeutics, diphosphonates, denosumab, teriparatide, estrogens, hormones, raloxifene hydrochloride, calcitonin, cathepsin K) and non-MeSH terms (antire…

Imaging of bone metastases in prostate cancer: an update.

Assessing bone metastases is often beyond the scope of plain - film radiography, and nuclear imaging in particular with bone scintigraphy has proved the mainstay for detection of bony disease for over 40 years. Bone scanning with 99mTechnetium - labeled diphosphonates relies on the detection of pathological osteoblastic response elicited from malignant cells. This technique offers the advantage of whole body examination, low cost, availability and high sensitivity. However, it suffers from relative low specificity. The addition of single-photon emission computed tomography (SPECT) to bone scin…

[Reflex sympathetic dystrophy: still a poorly defined entity].

The reflex sympathetic dystrophy (algodystrophy) constitutes a large nosological field of which the main characteristics are the appearance … . First-line treatment in France, other than antalgics, often rests on the calcitonins. Intravenous diphosphonates are proposed by some in case of treatment failure. Regional venous blocks are sometimes performed in resistant and disabling forms. Rehabilitation and psychological support have a primordial place throughout the evolution of the illness.

Should bisphosphonates be part of the standard therapy of patients with multiple myeloma or bone metastases from other cancers? An evidence-based review.

PURPOSE: To review objectively the evidence for the use of bisphosphonates for the reduction of skeletal events or the management of pain due to multiple myeloma or bone metastases from other types of cancer. METHODS: MEDLINE was searched from 1976 onwards using the MeSH terms "exp diphosphonates/," "exp bone neoplasms/," "exp multiple myeloma/," and "bone metastases" as text words. Bibliographies of reports on these topics and major medical and scientific journals were searched. Experts in the field were approached. The question was defined and the evidence stratified in a hierarchical manne…

Ultrasound in the early diagnosis of heterotopic ossification in patients with spinal injuries.

Heterotopic ossification (HO) is a potentially disabling complication of spinal injuries and other chronic disorders. It is of unknown aetiology and currently there is no easy or convenient diagnostic method that will allow very early confirmation of the inflammatory changes that precede osteoid and, later, true bone formation. Clinical experience, however, indicates that early treatment with radiotherapy, antiinflammatory agents or diphosphonates is needed to control the progression. This study was undertaken to assess the role of ultrasound (US) in the very early diagnosis of HO in patients …

[Calcifying panniculitis].

We report a case of calcifying panniculitis which occurred in a 67-year old woman suffering from chronic renal failure and primarily involve … worsening of the lesions and provide the best chance of healing without superinfection. The use of diphosphonates on pathophysiological grounds is discussed.

- сайентометрическое исследование исследовательских тенденций и характеристик связанного с лекарственными препаратами остеонекроза челюсти.

Остеонекроз челюсти (MRONJ) - это изнурительное состояние, характеризующееся постепенным некрозом челюстной кости у пациентов, которые получали антирепрессивные или антиангиогенные лекарства. Цель этого исследования заключалась в анализе сайентометрических характеристик и исследовательских тенденций МРОНЖ. Все документы по ДРОНЖ были полностью извлечены из базы данных Scopus. РЕЗУЛЬТАТЫ: Среди всех 2857 документы о МИРОНЕ, 2251 (В тыс.78.8 %) были опубликованы стоматологами. Наиболее распространенными лекарствами, вызывающими MRONJ, были дифосфонаты, золедронная кислота и деносумаб. Болезни, с

Совпадение в аннотации оригинала
BACKGROUND/PURPOSE: Medication-related osteonecrosis of the jaw (MRONJ) is a debilitating condition characterized by a progressive necrosis … , 2251 (78.8 %) were published by stomatologists. The most common medications that cause MRONJ were diphosphonates, zoledronic acid, and denosumab. The MRONJ-related diseases were multiple myeloma, breast cancer, prostate cancer, bone metastasis, diabetes mellitus, and rheumatoid arthritis. Treatment strategies including debridement, antibiotic therapy, conserva …

[The pathology of ocular syndromes caused by toxicity].

Ocular adnexa represent a complex system of delicate organs and functions which are the target of varied side effects. Most involve more tha … ) frequently induce canalicular stenosis, resulting in epiphora. Amongst a long list of substances, diphosphonates used in the treatment of osteoporosis and phosphodiesterase-5 inhibitors used in erection deficiencies induce conjunctival irritation, either directly or by contiguity. Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis represent the most sever …

Upper extremity radionuclide bone imaging: the wrist and hand.

Bone scintigraphy of the hands and wrists represents an important adjunct imaging technique that complements plain film radiographic examina … leukocytes has proven useful in the evaluation of acute or chronic osteomyelitis. In addition, the diphosphonates are useful in identifying solitary and multiple primary bone tumors. In the case of primary bone tumor, thallium-201 can be used to evaluate response to therapy. Although uncommon in the hand and wrist, the bone scan can identify metastatic tumors o …

Heterotopic ossification as a complication of the staged total thigh muscles flap in spinal cord injury patients.

Between 1980 and 1990, 24 total thigh flap procedures were performed at Rancho Los Amigos Medical Center (Downey, CA) by the Pressure Ulcer … ld be kept to an absolute minimum. Additionally, HO medicinal prophylaxis (that is, indomethacin or diphosphonates) or radiation after the first stage of the total thigh flap procedure should be considered. Our final conclusion is that the total thigh flap procedure should be done as a one-stage procedure if possible.

Treatment of postmenopausal osteoporosis: is the anabolic steroid nandrolone decanoate a candidate?

Thirty-nine postmenopausal women (aged 55-75 years) with at least one osteoporotic fracture were allocated to one year of treatment with the … (plasma bone Gla protein (BGP), serum alkaline phosphatase) and whole body retention (WBR) of 99mTc-diphosphonates were not statistically significantly changed by the nandrolone decanoate therapy. We conclude that treatment with nandrolone decanoate does increase the bone mineral content; however, this may not be due to a direct increase in bone formation. The m …

Selective Cardiac Tc-99m DPD Retention With Markedly Reduced Extracardiac Uptake in Hereditary Transthyretin Amyloidosis.

We describe a case of a 76-year-old man with genetically confirmed hereditary transthyretin amyloidosis (hATTR) due to a pathogenic TTR variant, c.97_99dup (p.Met33dup), with possible coexisting amyloid light-chain (AL) amyloidosis. Serial Technetium-99m 2,3-dicarboxypropane-1,1-diphosphonate Tc-99m DPD) scintigraphy revealed persistent grade 3 myocardial uptake but minimal extracardiac tracer accumulation in the skeletal system and intestines. Despite similar or higher heart-to-contralateral (H/CL) ratios, other patients did not exhibit this pattern, underscoring the atypical nature of the ob

PET/CT Imaging of Inflammatory Myofibroblastic Tumor of the Thigh.

A 13-year-old male patient presented with right leg pain and walking difficulty. Contrast-enhanced magnetic resonance imaging showed a softtissue lesion between muscle groups in the anterior half of the right thigh. The excisional biopsy result ended in an inflammatory myofibroblastic tumor (IMT). The 18F-fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) scan showed hypermetabolism in the multifocal soft tissue lesion and also confirmed that no other distant foci were present. A three-phase Tc-99m-methylene diphosphonate study of the region showed heterogeneously inc

Multifocal eosinophilic granuloma presenting as progressive brainstem and cerebellar dysfunction.

A 55 year old woman with multifocal eosinophilic granuloma (MEG) is described. She developed facial numbness and twitching followed by slowly progressive cerebellar symptoms. Two years later polyuria and polydipsia were noted. A CT of the brain showed multifocal enhancing lesions, and MRI showed areas of hyperintensity on T2 weighted studies in the cerebellar peduncles, pons, and midbrain. Radiographs of the skull, pelvis, and long bones were normal, but a 99mTc diphosphonate bone scan and MRI showed bone lesions compatible with granuloma. The diagnosis of MEG was made by bone biopsy. This is