Résumé Introduction: les calcifications valvulaires constituent une des complications cardiovasculaires majeures de l’hémodialysé de par sa prévalence et son caractère prédictif de morbidité et de mortalité. De nombreux facteurs de risque sont à l’origine de ces calcifications. Le but de notre étude est d’évaluer à la fois la prévalence des calcifications valvulaires chez nos patients hémodialy...

OBJECTIVE The biological importance of calcifications occasionally noted in fetal tissues (mainly liver) at autopsy or ultrasound is largely unexplored. Previous reports hint at an association to infection, circulatory compromise, malformations or chromosomal abnormalities. To identify factors associated with calcifications, we have performed a case-control study on the largest cohort of fetuse...

CS is an autosomal recessive multisystem disorder, which is mainly characterized by neurologic and sensory impairment, cachectic dwarfism, and photosensitivity. We describe the neuroimaging features (MR imaging, ¹H-MR spectroscopy, and CT) in the various clinical subtypes of CS from a cohort of genetically and biochemically proved cases. Hypomyelination, calcifications, and brain atrophy were t...

Adult-onset leukoencephalopathy with axonal spheroids and pigmented glia is a rare neurodegenerative disease resulting from mutations in the colony stimulating factor 1 receptor gene. Accurate diagnosis can be difficult because the associated clinical and MR imaging findings are nonspecific. We present 9 cases with intracranial calcifications distributed in 2 brain regions: the frontal white ma...

Chronic kidney disease (CKD) patients could present various types of calcifications causing different pathological conditions that would contribute to the renal disease progression and high risk of mortality. Extra-skeletal calcifications represent a common consequence of mineral bone disorders in CKD patients. Vascular calcifications represent a complex systemic manifestation caused by phospho...

Fibroblastic growth factor 23 (FGF23) regulates renal phosphate reabsorption and 1alpha-hydroxylase activity. Ablation of FGF23 results in elevated serum phosphate, calcium, and 1,25-dihydroxyvitamin D3 [1,25(OH)(2)D] levels; vascular calcifications; and early death. For determination of the independent roles of hyperphosphatemia and excess vitamin D activity on the observed phenotypic abnormal...

Rosa Maria Scuteri, MD, Paraguay 2342, 8A, 1121 Buenos Aires (Argentina) Dear Sir, Tumoral calcifications are an infrequent finding in hemodialysis patients. In reference to the paper published by Zins et al. [1], we report upon a hypothyroid female patient aged 51 years who developed this kind of metastatic calcification after 7 years of maintenance hemodialysis in a unit with water treatment ...

This investigation was conducted to assess the predictive value of calcifications and densities in mammograms from women <50 years of age for subsequent diagnosis of breast cancer. In a population-based study, prior screening mammograms taken before age 50 in 547 women with breast cancer and 472 controls were reviewed by a single radiologist. The relative risk (RR) of subsequent breast cancer i...

The roentgenologic diagnosis of occupational asbestosis is based upon typical pulmonary fibrosis and anteriorly detected pleural calcifications, which appear much later than parenchymal changes. Therefore, a definite diagnosis usually demands a long observation period. We used ultrasonic A-and B-mode methods to examine pleural changes in nine occupational asbestosis patients and five normal per...

BACKGROUND The aim of this study was to determine the predictive value for malignancy of microcalcifications determined by ultrasonography in thyroid nodules. METHODS One hundred seventy-seven nodules were prospectively studied by ultrasonography and compared with their fine-needle aspirative biopsy. The association between the presence and type of calcification and cytologic findings was ver...