Gray scale and color Doppler US findings of amniotic sheets

Özkavukçu, Esra; Haliloğlu, Nuray

doi:10.4261/1305-3825.dir.4696-11.1

Cited by 6 publications

(7 citation statements)

References 12 publications

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“…This is an important sign that differentiates the sheet from the amniotic band which is thinner, with no vascularization [9] and is associated with disruptive fetal deformations [10]. Amniotic sheet is considered to be incidental, identified during routine obstetric ultrasound examinations.…”

Section: Amniotic Sheetmentioning

confidence: 99%

Abnormal ultrasound appearance of the amniotic membranes – diagnostic and significance: a pictorial essay

et al. 2017

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The obstetrical ultrasound may identify the protrusion of the uterine surface or placental area into the amniotic cavity. The differential diagnosis of this pathology with uterine adhesions, septate uterus, circumvallate placenta, amniotic band or amniotic sheet can be sometimes difficult. The purpose of the pictorial essay is to exemplify the presence of the amniotic sheet and circumvallate placenta in routine obstetrics screening of all trimesters of pregnancy.

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Section: Amniotic Sheetmentioning

confidence: 99%

Abnormal ultrasound appearance of the amniotic membranes – diagnostic and significance: a pictorial essay

et al. 2017

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“…Doppler studies have also revealed arterial blood flow concurrent with maternal arterial blood flow on amniotic sheets 14 , 15 . In their recent study, Özkavukcu and Haliloğlu 8 reported maternal arterial blood flow, maternal venous blood flow, and no blood flow in 40%, 50%, and 10% of amniotic sheets, respectively. As Schenker 17 reported in 1996, it is still unclear whether infections have a role in the development of these formations.…”

Section: Discussionmentioning

confidence: 97%

“…Despite the lack of an association established between these conditions and fetal outcomes, 3 , 5 some studies referred to increased rates of neonatal mortality 6 and fetal malpresentation 10 depending on the relationship between the placenta and the amniotic sheet. Finally, there is usually only one amniotic sheet within the uterine cavity; however, two sheets within the cavity have been reported in some cases 3 , 8 . Complete amniotic sheets, amniotic sheets located in the lower part of the uterus, and the placental attachment of the sheets quoted in the literature may be associated with poor pregnancy outcomes.…”

Section: Discussionmentioning

confidence: 99%

“…Although the amniotic sheet, which was first described in 1985 by Mahony et al, 1 has long been known, its true incidence and causes remain unknown 1 – 8 . The prevalence of an amniotic sheet has been reported to be between 0.14% and 0.75% in previous studies 6 , 8 – 11 .…”

mentioning

confidence: 99%

“…The diagnosis of an amniotic sheet can be made by sonography 2 , 3 , 5 – 8 , 10 , 12 . The sonographic appearance of an amniotic sheet is commonly characterized by a large root located in the uterine wall, a free edge oscillating in the cavity, and the presence of a fetus moving freely around the amniotic sheet tissue.…”

mentioning

confidence: 99%

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Effect of an Amniotic Sheet on Pregnancy Outcomes

Gün

Muhçu

Müngen

et al. 2013

Journal of Ultrasound in Medicine

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Value of Dynamic Subtraction MRI in Assessing HCC Response to Image-guided loco-regional Therapy

Aly

Hashem

Abouyoussef

et al. 2023

African Journal of Gastroenterology and Hepatology

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Background: Hepatocellular carcinoma (HCC) is considered one of the foremost cancers worldwide. Although the hepatic resection of HCC has a high existence in the clinical scenarios, locoregional management is preferred owing to the preservation of hepatic parenchyma with lower morbidity and mortality. Dynamic contrast-enhanced MR with subtraction imaging improves the evaluation of managed HCC with easy detection of residual or recurrent viable lesions. Patients and methods: This study was designed in a retrospective pattern from December 2020 to December 2022. Forty patients were referred to our radiology department with solitary HCC, underwent therapeutic intervention, and then underwent follow-up by dynamic MRI study. Results: Forty patients with solitary HCC were conducted during our study; all underwent locoregional therapy with follow-up by dynamic MRI with subtraction technique one month later. The subtraction image has a sensitivity of 100%, specificity of 100%, PPV of 100%, NPV of 100%, and 100% accuracy, compared to 90.91%, 77.78%, 83.33%, 87.5%, and 85% for conventional dynamic images, 45.45%, 100%, 100%, 60% and 70% for diffusion-weighted images. Analysis of those results exhibited a considerable additive value of the subtraction technique to the dynamic MRI to detect the response of HCC after management. Conclusions: Subtraction MRI is a pivotal tool for assessing the interventional treatment of HCC, particularly in lesions having pre-contrast high signal intensity with distinguished radiologists' confidence.

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Gray scale and color Doppler US findings of amniotic sheets

Cited by 6 publications

References 12 publications

Abnormal ultrasound appearance of the amniotic membranes – diagnostic and significance: a pictorial essay

Abnormal ultrasound appearance of the amniotic membranes – diagnostic and significance: a pictorial essay

Effect of an Amniotic Sheet on Pregnancy Outcomes

Value of Dynamic Subtraction MRI in Assessing HCC Response to Image-guided loco-regional Therapy

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