Causes of increased renal medullary echogenicity in Turkish children

Nayır, Ahmet; Kadıoğlu, Ateş; Şirin, Aydan; Emre, Sevinç; Tonguç, Erdem; Bilge, İlmay

doi:10.1007/bf00868724

Cited by 23 publications

(16 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Calcium deposits and stones are very echogenic; thus, medullary nephrocalcinosis is characterized by increased medullary echogenicity and a relatively normal-appearing cortex (Figure 2). Several renal diseases are associated with medullary nephrocalcinosis, including medullary sponge kidney, hyperparathyroidism, renal tubular acidosis, and vitamin D toxicity (9,10). Other kidney diseases that have been associated with a hyperechoic medulla include sickle cell disease and gout (9).…”

Section: Use Of Specific Parameters Obtained From Ultrasonography Andmentioning

confidence: 99%

Renal Relevant Radiology

Faubel

Patel²,

Lockhart

et al. 2014

Clinical Journal of the American Society of Nephrology

100

View full text Add to dashboard Cite

SummaryAs judged by the American College of Radiology Appropriateness Criteria, renal Doppler ultrasonography is the most appropriate imaging test in the evaluation of AKI and has the highest level of recommendation. Unfortunately, nephrologists are rarely specifically trained in ultrasonography technique and interpretation, and important clinical information obtained from renal ultrasonography may not be appreciated. In this review, the strengths and limitations of grayscale ultrasonography in the evaluation of patients with AKI will be discussed with attention to its use for (1) assessment of intrinsic causes of AKI, (2) distinguishing acute from chronic kidney diseases, and (3) detection of obstruction. The use of Doppler imaging and the resistive index in patients with AKI will be reviewed with attention to its use for (1) predicting the development of AKI, (2) predicting the prognosis of AKI, and (3) distinguishing prerenal azotemia from intrinsic AKI. Finally, pediatric considerations in the use of ultrasonography in AKI will be reviewed.

show abstract

Section: Use Of Specific Parameters Obtained From Ultrasonography Andmentioning

confidence: 99%

Renal Relevant Radiology

Faubel

Patel²,

Lockhart

et al. 2014

Clinical Journal of the American Society of Nephrology

100

View full text Add to dashboard Cite

show abstract

“…Hypercalciuria appears to be the most common abnormality associated with NC [3,4]. Since the introduction of renal ultrasound technology NC has been recognized more frequently but reports in children have been restricted to relatively small series [5,6,7,8,9,10,11,12]. The etiology and clinical significance of NC remain largely unclear and its prognosis uncertain.…”

Section: Introductionmentioning

confidence: 99%

Nephrocalcinosis in children: a retrospective survey

Rönnefarth¹,

Misselwitz²

2000

Pediatric Nephrology

View full text Add to dashboard Cite

We carried out a retrospective survey on 152 children and adolescents with nephrocalcinosis (NC) in 22 German centers of pediatric nephrology. Etiology, clinical manifestations, growth and development, sonographic appearance of NC and renal function were analyzed. The median age at the time of diagnosis was 3.3 (range 0.1-21) years and the median duration of follow-up was 4.1 years. In 34% of children NC was associated with idiopathic hypercalciuria (IHC) and in 32% with various hereditary tubular disorders. In 9% NC was observed subsequent to prophylactic bolus administration of vitamin D in infancy. A positive family history was found in 36%. Clinical manifestations were mainly failure to thrive during the 1st year of life (46%), psychomotor/mental retardation (28%) and urinary tract infection (34%). In 14% nephrolithiasis was associated. During the follow-up the proportion of patients with the most severe degree of NC (stages 2b or 3) increased from 40% to 55% and that of hypercalciuria decreased from 79% to 52%. Body height was <2 standard deviation scores (SDS) of normal in 41% at the time of diagnosis and in 32% at the last observation; the increase in relative height was significant only for IHC. Glomerular filtration rate (GFR) and urinary concentration capacity changed only slightly with time. At the last investigation GFR was <50 ml/min/1.73 m2 in 6% and concentration capacity <800 mosmol/kg in 48% of patients. The degree of NC was negatively correlated with GFR and concentration capacity.

show abstract

“…[25]. The etiology is sometimes already clear during the fetal period (e.g., polycystic kidney) [26].…”

Section: Discussionmentioning

confidence: 99%

Fetal renal artery flow and renal echogenicity in the chronically hypoxic state

Surányi¹,

Streitman²,

Pál

et al. 2000

Pediatr Nephrol

View full text Add to dashboard Cite

The object of this study was to investigate the fetal renal arterial blood flow in normal and hyperecho-genic kidneys during the third trimester of gestation. The pregnancies screened were all chronically hypoxic. Depending on the etiology of the intrauterine chronic hypoxia, the cases were divided into two study groups. Group I comprised 120 pregnant women with pregnancy-associated hypertension and/or proteinuria. Group II consisted of 87 pregnancies with intrauterine growth retardation. Both study groups included pregnant women from the third trimester. Hyperechogenic renal medullae were detected in 15 out of 120 cases with pregnancyassociated hypertension and/or proteinuria, and in 22 fetuses of the 87 pregnancies involving intrauterine growth retardation. Fetal renal hyperechogenicity appears to be an indicator of fetal arterial circulatory depression, correlated with pathological changes in the resistance index for the fetal renal arteries. The fetal renal arterial blood flow resistance index was significantly lower in hyperechogenic cases. This may also be an in utero indication of subsequent intrauterine and neonatal complications, such as cesarean section because of fetal distress (43%), treatment in a neonatal intensive care unit (51%) or increased perinatal mortality (5.4%, as compared with 0.8-1.0% in the normal population). Detailed ultrasound and Doppler examinations of renal parenchyma and arteries appear to be useful methods in the prenatal diagnosis of reduced renal perfusion and of intrauterine hypoxia to detect possible pathological fetal conditions in utero.

show abstract

Causes of increased renal medullary echogenicity in Turkish children

Cited by 23 publications

References 43 publications

Renal Relevant Radiology

Renal Relevant Radiology

Nephrocalcinosis in children: a retrospective survey

Fetal renal artery flow and renal echogenicity in the chronically hypoxic state

Contact Info

Product

Resources

About