scholarly journals Preoperative evaluation of persistent cloaca using contrast-enhanced ultrasound in an infant

2020 ◽  
Vol 22 (2) ◽  
pp. 250
Author(s):  
Xueyun Lin ◽  
Xiaohong Xu ◽  
Yuping Yang ◽  
Jiang Wu ◽  
Xiaohui Xian ◽  
...  
Keyword(s):  
Rectovaginal Fistula ◽  
Anorectal Malformation ◽  
Bladder Neck ◽  
Preoperative Evaluation ◽  
Contrast Enhanced Ultrasound ◽  
Common Channel ◽  
Cloacal Malformation ◽  
Persistent Cloaca ◽  
Contrast Enhanced ◽  
The Common

Persistent cloaca (PC) is the most intricate anorectal malformation. Contrast-enhanced ultrasound (CEUS) is safe for hepatic, renal, splenic, vascular, and intracavitary assessment in children, but it is little applied for cloacal malformation. Our results demonstrate that CEUS can not only display the uterine, vagina, bladder, urethra, rectum, and rectovaginal fistula, but also measure the length of the common channel, bladder neck to the common channel, and distal urethra to the perineum. To our knowledge this may be the first report of preoperative evaluation by CEUS in an infant with PC.

Utility of contrast-enhanced ultrasound in preoperative evaluation of primary hyperparathyroidism

2018 ◽  
Author(s):  
Paola Parra Ramirez ◽  
Patricia Martin Rojas Marcos ◽  
Antonio Santiago Hernando ◽  
Arturo Lisbona Catalan ◽  
Alejandro Casto Calvo ◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Preoperative Evaluation ◽  
Contrast Enhanced Ultrasound ◽  
Contrast Enhanced

scholarly journals Elastographic and contrast-enhanced ultrasound features of a benign schwannoma of the common fibular nerve

2013 ◽  
Vol 16 (3) ◽  
pp. 135-138 ◽  
Author(s):  
V. Cantisani ◽  
N. Orsogna ◽  
A. Porfiri ◽  
C. Fioravanti ◽  
F. D’Ambrosio
Keyword(s):  
Contrast Enhanced Ultrasound ◽  
Benign Schwannoma ◽  
Contrast Enhanced ◽  
The Common ◽  
Fibular Nerve ◽  
Common Fibular Nerve ◽  
Ultrasound Features

Complex Cloacal Malformations: The Application and Importance of Cloacagrams

2019 ◽  
Vol 03 (04) ◽  
pp. 333-336
Author(s):  
Caitlin A. Smith ◽  
Manish Patel ◽  
Kevin S.H. Koo
Keyword(s):  
Anorectal Malformation ◽  
Surgical Planning ◽  
Surgical Intervention ◽  
Radiographic Imaging ◽  
Common Channel ◽  
Endoscopic Evaluation ◽  
Additional Information ◽  
Cloacal Malformations ◽  
The Common

AbstractCloaca is a rare complex anorectal malformation in female patients where the urinary, gynecologic, and gastrointestinal tracts empty through a single pathway, known as the common channel. Previously, cloacas were measured through endoscopic evaluation alone. In recent years, radiographic imaging of the cloaca with a 3D cloacagram, has been a valuable tool for the characterization of the specific anatomical variables in each cloaca, and provides additional information that is beneficial for the preoperative surgical planning. This article reviews the embryology of cloaca, as well as the classification, noninvasive imaging, cloacagram protocol, and surgical intervention.

scholarly journals Value of Contrast-Enhanced Ultrasound in the Preoperative Evaluation of Papillary Thyroid Carcinoma Invasiveness

2022 ◽  
Vol 11 ◽  
Author(s):  
Lei Chen ◽  
Luzeng Chen ◽  
Zhenwei Liang ◽  
Yuhong Shao ◽  
Xiuming Sun ◽  
...  
Keyword(s):  
Papillary Thyroid Carcinoma ◽  
Thyroid Carcinoma ◽  
Lymph Nodes ◽  
Diagnostic Accuracy ◽  
Preoperative Evaluation ◽  
Contrast Enhanced Ultrasound ◽  
Papillary Thyroid ◽  
Contrast Enhanced ◽  
Group A ◽  
Group B

ObjectiveTo evaluate the diagnostic performance of preoperative contrast-enhanced ultrasound (CEUS) in the detection of extracapsular extension (ECE) and cervical lymph node metastasis (LNM) of papillary thyroid carcinoma (PTC) and the added value of CEUS in the evaluation of PTC invasiveness to conventional ultrasound (US).Materials and MethodsA total of 62 patients were enrolled retrospectively, including 30 patients with invasive PTCs (Group A, ECE or LNM present) and 32 patients with non-invasive PTCs (Group B). All patients underwent US and CEUS examinations before surgery. US and CEUS features of PTCs and lymph nodes were compared between groups. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of US, CEUS, and the combination of the two in the detection of ECE and LNM of PTCs were calculated. Logistic regression was used to analyze relationships between variables.ResultsThe PTC size was larger in group A on both US and CEUS (P = 0.001, P = 0.003). More PTCs showed hyper-enhancement in group A (P = 0.013) than in group B. More PTCs had >25% contact between PTC and the thyroid capsule and discontinued capsule on US and CEUS (all P < 0.05) in group A than in group B. More absent hilum and calcification of lymph nodes were observed in group A (both P < 0.05) than in group B on US. More centripetal perfusion and enlarged lymph nodes were observed in group A (both P < 0.05) than in group B on CEUS. CEUS alone and US combined with CEUS manifested higher diagnostic accuracy (79.0%) than US alone (72.6%) in the detection of ECE. The combination of US and CEUS manifested the highest diagnostic accuracy (95.2%) than CEUS alone (90.3%) and US alone (82.2%) in the detection of LNM. Diagnoses of ECE and LNM by the combination of US and CEUS were independent risk factors for PTC invasiveness [odds ratio (OR) = 29.49 and 97.20, respectively; both P = 0.001].ConclusionCEUS or US combined with CEUS is recommended for the detection of PTC ECE, while the combination of US and CEUS is most recommended for LNM detection. CEUS plays an essential role in the preoperative evaluation of PTC invasiveness.

Potential Utility of Contrast‐Enhanced Ultrasound in the Preoperative Evaluation of Primary Hyperparathyroidism

2019 ◽  
Vol 38 (10) ◽  
pp. 2565-2571 ◽  
Author(s):  
Paola Parra Ramírez ◽  
Antonio Santiago Hernando ◽  
Beatriz Barquiel Alcalá ◽  
Patricia Martín Rojas‐Marcos ◽  
Arturo Lisbona Catalán ◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Preoperative Evaluation ◽  
Potential Utility ◽  
Contrast Enhanced Ultrasound ◽  
Contrast Enhanced

scholarly journals Intraoperative high-resolution ultrasound and contrast-enhanced ultrasound of peripheral nerve tumors and tumorlike lesions

2015 ◽  
Vol 39 (3) ◽  
pp. E5 ◽  
Author(s):  
Maria Teresa Pedro ◽  
Gregor Antoniadis ◽  
Angelika Scheuerle ◽  
Mirko Pham ◽  
Christian Rainer Wirtz ◽  
...  
Keyword(s):  
High Resolution ◽  
Peripheral Nerve ◽  
Diffusion Tensor ◽  
Preoperative Evaluation ◽  
Pulse Sequences ◽  
Rare Tumor ◽  
Contrast Enhanced Ultrasound ◽  
High Frequency Ultrasound ◽  
Contrast Enhanced ◽  
Tumor Entities

The diagnostic workup and surgical therapy for peripheral nerve tumors and tumorlike lesions are challenging. Magnetic resonance imaging is the standard diagnostic tool in the preoperative workup. However, even with advanced pulse sequences such as diffusion tensor imaging for MR neurography, the ability to differentiate tumor entities based on histological features remains limited. In particular, rare tumor entities different from schwannomas and neurofibromas are difficult to anticipate before surgical exploration and histological confirmation. High-resolution ultrasound (HRU) has become another important tool in the preoperative evaluation of peripheral nerves. Ongoing software and technical developments with transducers of up to 17–18 MHz enable high spatial resolution with tissue-differentiating properties. Unfortunately, high-frequency ultrasound provides low tissue penetration. The authors developed a setting in which intraoperative HRU was used and in which the direct sterile contact between the ultrasound transducer and the surgically exposed nerve pathology was enabled to increase structural resolution and contrast. In a case-guided fashion, the authors report the sonographic characteristics of rare tumor entities shown by intraoperative HRU and contrast-enhanced ultrasound.

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