Sonolucent areas in the placenta: sonographic and pathologic correlation

Spirt, Beverly A.; Kagan, Eugene H.; Rozanski, Richard M.

doi:10.2214/ajr.131.6.961

Cited by 18 publications

(5 citation statements)

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“…Subchorionic fibrosis is caused due to subchorionic fibrin deposits which may be seen in all term placenta and is not of clinical significance as stated by Sprit et al [16].…”

Section: Subchorionic Fibrosismentioning

confidence: 95%

Morphology and Morphometric Study of Human Placenta in Rural Southern India

Kulandaivelu

2014

BJMMR

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“…Subchorionic fibrosis is caused due to subchorionic fibrin deposits which may be seen in all term placenta and is not of clinical significance as stated by Sprit et al [16].…”

Section: Subchorionic Fibrosismentioning

confidence: 95%

Morphology and Morphometric Study of Human Placenta in Rural Southern India

Kulandaivelu

2014

BJMMR

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“…8 The authors concluded that such regions were quite common and were found in 10-15% of placentas examined by ultrasound. The placenta, however, has considerable reserve capacity,S and most ultrasonically detected lesions may be clinically insignificant unless a large portion of the placenta is involved.…”

Section: Discussionmentioning

confidence: 99%

Ultrasonic evidence that massive subchorial thrombohematoma is an antemortem event

Almondm

Fentomm

Kennedym

et al. 1983

J of Clinical Ultrasound

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“…Sonographic sonolucencies or translucencies are anechoic areas surrounded by tissue of normal echogenicity. First described using B-mode ultrasonography in adult organs such as the gallbladder 1 , the term 'sonolucencies' was used increasingly in the 1970s to describe placental lesions, such as subchorionic thrombosis and hematomas and cystic changes associated with gestational trophoblastic disorders 2 . The development of high-resolution grayscale imaging allowed for more accurate evaluation of different placental lesions 3 .…”

Section: Introductionmentioning

confidence: 99%

Placental lakes vs lacunae: spot the differences

Jauniaux,

Zosmer,

D'Antonio

et al. 2024

Ultrasound in Obstet & Gyne

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Sonographic sonolucencies are anechoic areas surrounded by tissue of normal echogenicity commonly found in the placental parenchyma during the second and their trimesters of pregnancy. The ultrasound images of lakes and lacunae are generated by the low echogenicity of villous free areas within the placental parenchyma, filled with maternal blood of varying velocities. In normal placentation, lakes usually start appearing as soon as maternal blood starts flowing freely inside the intervillous space at the end of the first trimester whereas in accreta placentation lacunae develop progressively during the second trimester. Larger lakes are mainly found in area that have physiologically less villous tissue under the fetal plate or at both placental edges. Lakes can also be found in the centre of a lobule above the entry of a spiral artery and these lakes can transform into echogenic cystic lesion which have been associated with poor fetal growth. Lacunae are formed by the distortion of one or more placental lobule developing inside a uterine scar and are the consequence of high volume, high velocity flows from the radial/arcuate arteries and are associated with a high probability of PAS at birth. They often present with ultrasound signs of uterine remodelling following scarification. Lakes and lacunae can co‐exist in the same placenta and both will change in size and shape as pregnancy advances. The ultrasound images of lakes and lacunae are generated by the low echogenicity of villous free areas within the placental parenchyma, filled with maternal blood of varying velocities. Lakes of different sizes, positions and shapes are not of any clinical significance. There is a weak association between cystic lesions and placental malperfusion. By contrast, lacunae are secondary to the development of one or more placental lobules inside a uterine scar and are the main ultrasound marker of accreta placentation. Better understanding of the etiopathology of the development of placental sonolucent spaces and other associated morphological changes is necessary to identify patients at risk of subsequent complications during pregnancy and/or at delivery.This article is protected by copyright. All rights reserved.

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Sonolucent areas in the placenta: sonographic and pathologic correlation

Cited by 18 publications

References 0 publications

Morphology and Morphometric Study of Human Placenta in Rural Southern India

Morphology and Morphometric Study of Human Placenta in Rural Southern India

Ultrasonic evidence that massive subchorial thrombohematoma is an antemortem event

Placental lakes vs lacunae: spot the differences

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