Neonatal renal venous thrombosis: Sequential ultrasonic appearances

Cremin, B. J.; Davey, H.; Oleszczuk-Raszke, K

doi:10.1016/s0009-9260(05)80228-4

Cited by 35 publications

(21 citation statements)

References 7 publications

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“…The ultrasonic features commonly seen in renal vein thrombosis (RVT) are well known and include generalised renal enlargement, increased echogenicity, loss of cortico-medullary differentiation (CMD) and echogenic interlobular streaking [1,2]. We report the findings on two infants with RVT, in one case detected antenatally, using high-frequency transducers (7.0-10 MHz), describe some new features seen on real-time imaging and speculate as to their aetiology.…”

Section: Introductionmentioning

confidence: 98%

Antenatal and neonatal renal vein thrombosis: New ultrasonic features with high frequency transducers

et al. 1996

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The ultrasonic appearances of two infants with renal vein thrombosis (RVT) are described. One infant presented in the neonatal period and one antenatally. Consistent with previous reports, one or both kidneys were enlarged, with a generalised increase in echogenicity and vascular or perivascular streaking compatible with interlobular and arcuate vessel occlusion. Using high frequency transducers (7. 0-10 MHz), we identified new features during the course of the disease. The apex of the renal papilla became hypo-echoic and there was a ring of reduced echogenicity around the affected pyramids 1-2 weeks after the acute phase. These features correlate with the known pathophysiological course of RVT, but have not been previously described using ultrasound. The features are illustrated and the mechanism is discussed.

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Section: Introductionmentioning

confidence: 98%

Antenatal and neonatal renal vein thrombosis: New ultrasonic features with high frequency transducers

et al. 1996

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“…33,34 In the first week, the affected kidney swells and becomes echogenic with prominent echo-poor medullary pyramids. Subsequently, the swelling decreases and the kidney becomes heterogenous with loss of corticomedullary differentiation.…”

mentioning

confidence: 99%

Thromboembolic Disease and Antithrombotic Therapy in Newborns

Andrew¹,

Monagle²,

deVeber³

et al. 2001

Hematology

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This update uses an evidence based approach to analyze and present the epidemiology of neonatal thrombosis, etiologies, currently used techniques for diagnosis with their limitations, and current therapeutic approaches. In addition, the approaches to both prevention and optimal therapies are discussed.In Section I Dr. Paul Monagle addresses the epidemiology of neonatal thrombosis outside of the central nervous system in both arterial and venous locations, and those that occur in utero. The specific contributions of catheters and congenital prothrombotic disorders are delineated. Dr. Monagle also describes currently used techniques for the diagnosis of thrombotic events as well as their limitations and the current therapeutic approaches.In Section II, Dr. Gabrielle deVeber reviews the epidemiology of neonatal thrombosis within the central nervous system, in both arterial and venous locations and those that occur in utero. The neurological presentation, risk factors including congenital prothrombotic disorders, anatomical distribution, diagnostic tests, use of antithrombotic therapy and neurologic outcome of neonates with either sinovenous thrombosis or arterial ischemic stroke are discussed.In Section III, Dr. Anthony Chan reviews the current approaches to the prevention and treatment of neonatal thrombosis. Information on the differences in the response of neonates compared to adults to antithrombotic therapy and new approaches to the prevention and treatment of thrombosis in neonates are emphasized.Thromboembolic events (TEs) during childhood are increasing in their frequency and severity, and occur in children surviving previously life-threatening primary diseases. Newborns comprise the largest group of children developing TEs. This paper discusses the epidemiology, diagnostic tests, acquired and congenital prothrombotic risk factors, long-term outcomes, and antithrombotic therapy for the management of TEs in newborns. Due to the unique features and the significance of TEs in the central nervous system (CNS), sinovenous thrombosis (SVT) and arterial ischemic stroke (AIS) will be considered separately; cerebrovascular lesions in premature infants will not be discussed.In preparation for this manuscript, comprehensive Medline reviews were performed to identify all relevant publications, which were analyzed based upon the study design; results of studies with stronger designs were given more influence in the analysis. The striking features of this review were the deficiencies in our knowledge with respect to appropriate diagnostic strategies, optimal therapy for newborns with TEs, and the contribution of congenital prothrombotic disorders. Well-designed trials are required to improve our ability to care for neonates with TEs.

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“…Ultrasonographic images remain abnormal in appearance, though changing, for as long as thrombosis persists. 6 Initially, the affected kidney is enlarged with resulting asymmetry and is more echoic. As enlargement progresses, asymmetry becomes increasingly obvious.…”

Section: Discussionmentioning

confidence: 99%

Antenatal renal vein thrombosis after accidental electric shock in a pregnant woman.

Anguenot

1999

Journal of Ultrasound in Medicine

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In utero RVT is not commonly suspected in the differential diagnosis of a renal mass in the fetus. To date, only six antenatal cases have been published. While the causes are diverse and the pathophysiologic mechanisms unclear, antenatal RVT is frequently associated with fetal distress. We report a new case of antenatal RVT, revealed by ultrasonography performed at 36 weeks' gestation for fetal distress, after an accidental electric shock 2 weeks earlier. CASE REPORTA 32 year old gravida 8 para 5 woman consulted the emergency department at 34 weeks' gestation after having received an electric shock. While mowing her lawn in bare feet, she accidentally grasped a partially unprotected area of her lawn mower's electric cable sheath. According to witnesses, her right hand firmly grasped the cable, after which she fell on her knees without losing consciousness. Her history suggested vertical flow of electric current from her right hand (entry point) to her bare feet (exit point), in that electric current travels to the area of lower resistance.She reported decreased fetal movements. The results of the obstetric examination were normal. Fetal well-being appeared normal, assessed by five cardiotocograms over a 24 h period and by fetal ultrasonography, which showed no pathologic conditions as compared to her 22 weeks' ultrasonography. No burn marks were observed. Her electrocardiogram showed a sinus tachycardia. She left the department after 24 h of observation, the fetal condition and hers considered normal.Two weeks later (36 weeks' of pregnancy), the patient returned to the emergency department, reporting an absence of fetal activity for the last 48 h. She also complained of pain in the fifth digit of her right hand, which was found to be the site of a punctiform third degree burn lesion. The patient was experiencing spontaneous uterine contractions, and a cardiotocogram revealed fetal tachycardia (170 beats/min), markedly reduced beat to beat variability, absence of accelerations, and sporadic late decelerations. The placenta, amniotic fluid index, and Doppler umbilical flow were all normal on sonographic

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Neonatal renal venous thrombosis: Sequential ultrasonic appearances

Cited by 35 publications

References 7 publications

Antenatal and neonatal renal vein thrombosis: New ultrasonic features with high frequency transducers

Antenatal and neonatal renal vein thrombosis: New ultrasonic features with high frequency transducers

Thromboembolic Disease and Antithrombotic Therapy in Newborns

Antenatal renal vein thrombosis after accidental electric shock in a pregnant woman.

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