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Abdominal Radiology

Bradley A Cagle, Raymond B Dyer
No abstract text is available yet for this article.
July 13, 2018: Abdominal Radiology
Adrian Jaramillo-Cardoso, Patricia Balcacer, Alejandro Garces-Descovich, Kevin Beker, Eve Roth, Jonathan Glickman, Koenraad J Mortele
PURPOSE: To review the clinical, multimodality imaging, and pathologic characteristics of abdominal wall endometriosis (AWE), the most common type of extra-pelvic endometriosis. METHODS: 116 women with histopathologically confirmed extragenital endometriosis diagnosed between 2/2014 and 6/2017 were evaluated retrospectively. Of these, 26 (22.4%) were found to have AWE and 18/26 met inclusion criteria for imaging. Available imaging studies were re-reviewed by two expert radiologists...
July 12, 2018: Abdominal Radiology
Zheng-Lei Xu, Jun Yao, Li-Sheng Wang
No abstract text is available yet for this article.
July 12, 2018: Abdominal Radiology
Ghaneh Fananapazir
No abstract text is available yet for this article.
July 12, 2018: Abdominal Radiology
Elisabetta Buscarini, Silvia Gandolfi, Saverio Alicante, Claudio Londoni, Guido Manfredi
Liver vascular malformations (VMs) in hereditary hemorrhagic telangiectasia (HHT) are typically diffuse and can evolve from small telangiectasias to large arteriovenous malformations, with various stages of severity. Doppler US is the ideal first-line investigation for the assessment of liver VMs in HHT due to its safety, tolerability, low costs, and accuracy for the detection of liver VMs. The caliber, course, and flow characteristics in the hepatic artery, portal vein, and hepatic vein as determined by Doppler US, together with parenchymal abnormalities, support the diagnosis of liver VMs in HHT and their severity staging...
July 10, 2018: Abdominal Radiology
Mei-Fang Hsieh, Chia-Bang Chen, Yao-Li Chen, Chen-Te Chou
PURPOSE: The purpose of the study is to evaluate the frequency, risk factors, and clinical significance of hemobilia after percutaneous computed tomography (CT)-guided radiofrequency ablation (RFA) of liver tumors. MATERIALS AND METHODS: From January 2013 to September 2016, 195 patients received 267 sessions of CT-guided RFA for liver tumors at our institution. The CT images during and immediately after the RFA were retrospectively reviewed. The frequency of hemobilia development and clinical outcome of patients with hemobilia were studied...
July 10, 2018: Abdominal Radiology
Lucia Manganaro, Silvia Gigli, Amanda Antonelli, Matteo Saldari, Federica Tomao, Claudia Marchetti, Emanuela Anastasi, Andrea Laghi
Ovarian cancer is one of the most aggressive gynaecologic malignancies in women worldwide. The lack of proper screening programs and the characteristic abdominal spreading with minimal clinical symptoms give rise of its high lethality. Most patients show advanced disease at diagnosis and have a poor prognosis. The surveillance of ovarian cancer patients after initial treatment is a challenging question in clinical practice and there is no consensus in literature about the most appropriate follow-up strategy for these women...
July 10, 2018: Abdominal Radiology
Mohd Ilyas, Zubair Ahmad, Arshed Hussain Parry
No abstract text is available yet for this article.
July 10, 2018: Abdominal Radiology
Wenjing Pang, Anne Karol, Quentin Minault, Francis Veillon, Aina Venkatasamy
No abstract text is available yet for this article.
July 10, 2018: Abdominal Radiology
Heidi Coy, Jonathan R Young, Michael L Douek, Alan Pantuck, Matthew S Brown, James Sayre, Steven S Raman
PURPOSE: The purpose of the study was to determine if enhancement features and qualitative imaging features on multiphasic multidetector computed tomography (MDCT) were associated with tumor grade in patients with clear cell renal cell carcinoma (ccRCC). METHODS: In this retrospective, IRB approved, HIPAA-compliant, institutional review board-approved study with waiver of informed consent, 127 consecutive patients with 89 low grade (LG) and 43 high grade (HG) ccRCCs underwent preoperative four-phase MDCT in unenhanced (UN), corticomedullary (CM), nephrographic (NP), and excretory (EX) phases...
July 9, 2018: Abdominal Radiology
Naif Alsaikhan, Wael Alshehri, Fiona Cassidy, Lejla Aganovic, Noushin Vahdat
The purpose of this paper is to describe cross-sectional imaging anatomic and morphologic parameters of solid renal tumors that urologists and interventional radiologists need for precise management, review the commonly used terms and descriptors of those parameters, and suggest a comprehensive reporting system for detected masses.
July 6, 2018: Abdominal Radiology
Moon Hyung Choi, Young Joon Lee, Seung Bae Yoon, Joon-Il Choi, Seung Eun Jung, Sung Eun Rha
PURPOSE: To assess the association between T2-weighted imaging (T2WI) texture-analysis parameters and the pathological aggressiveness or long-term outcomes in pancreatic ductal adenocarcinoma (PDAC) patients. METHODS: A total of 66 patients (mean age 65.3 ± 9.0 years) who underwent preoperative MRI followed by pancreatectomy for PDAC between 2013 and 2015 were included in this study. A radiologist performed a texture analysis twice on one axial image using commercial software...
July 6, 2018: Abdominal Radiology
Stephen Choy, Dennis Parhar, Kevin Lian, Heiko Schmiedeskamp, Luck Louis, Timothy O'Connell, Patrick McLaughlin, Savvas Nicolaou
PURPOSE: To retrospectively compare the image noise, signal-to-noise ratio (SNR), and subjective image quality between CT images acquired with a dual-source, split-dose imaging protocol reconstructed at full and half doses with weighted filtered back projection (wFBP) and an improved sinogram-affirmed iterative reconstruction algorithm (SAFIRE*). METHODS: Fifty-three consecutive patients underwent contrast-enhanced CT of the abdomen using a standardized dual-source, single energy CT protocol...
July 6, 2018: Abdominal Radiology
Sherif Elsherif, Erika G L C Odisio, Silvana Faria, Sanaz Javadi, Sireesha Yedururi, Michael Frumovitz, Preetha Ramalingam, Priya Bhosale
Neuroendocrine cervical cancer (NECC) is a rare and aggressive subtype of cervical cancer, accounting for less than 2% of cervical tumors. They are divided into low-grade and high-grade tumors. High-grade NECC is associated with human papillomavirus (HPV) 18 and to a smaller extent type 16. The most common molecular alterations in NECC include PIK3CA, KRAS, and TP53 mutations. Immunohistochemical staining for CD56, synaptophysin, and chromogranin is a helpful tool in the diagnosis. NECCs pose a significant clinical and therapeutic challenge because of their aggressive nature which is explained by their tendency towards early nodal and hematogenous spread...
July 4, 2018: Abdominal Radiology
Andrew W Bowman, Candice W Bolan
The radiologist's role in the evaluation of pancreatic ductal adenocarcinoma remains critical in the management of this deadly disease. Imaging plays a vital role in the diagnosis and staging of pancreatic cancer. Although CT is more commonly used for staging pancreatic cancer, MR is increasingly playing an important role in this regard. In our institution, all pancreatic malignancies undergo staging with MRI. In this pictoral essay, we illustrate the MR imaging features of pancreatic ductal adenocarcinoma and its mimics, and we also discuss pearls and pitfalls in MR staging of pancreatic carcinoma...
July 2, 2018: Abdominal Radiology
Steven P Rowe, Carolina Lugo-Fagundo, Hannah Ahn, Elliot K Fishman, Jason D Prescott
Adrenalectomy is the standard of care for management of many adrenal tumor types and, in the United States alone, approximately 6000 adrenal surgeries are performed annually. Two general approaches to adrenalectomy have been described; (1) the open approach, in which a diseased adrenal is removed through a large (10-20 cm) abdominal wall incision, and (2) the minimally invasive approach, in which laparoscopy is used to excise the gland through incisions generally no longer than 1-2 cm. Given these disparate technique options, clear preoperative characterization of those specific disease features that inform selection of adrenalectomy approach is critically important to the surgeon...
July 2, 2018: Abdominal Radiology
Hamideh Ale Ali, Richard Kirsch, Suzan Razaz, Aaditeya Jhaveri, Seng Thipphavong, Erin D Kennedy, Kartik S Jhaveri
OBJECTIVE: Extramural venous invasion (EMVI) is an independent prognostic factor for prediction of overall unfavorable outcomes in rectal cancer. While EMVI has traditionally been detected in postoperative pathologic specimens, MRI can provide this important piece of information preoperatively. This article reviews the methods of EMVI detection and their clinical implications for treatment and outcomes of rectal cancer. CONCLUSION: EMVI has fundamental implications for rectal cancer prognosis and long-term outcomes...
July 2, 2018: Abdominal Radiology
Aaron Rohr, Kyle Werth, Xinglei Shen, Zachary Collins, Shelby Fishback, Jill Jones, Ryan Ash, Vanessa Williams
Prior studies have shown that dose-escalated radiation therapy for prostate cancer improves clinical outcomes. However, this is associated with increased rectal toxicity. Hydrogel spacer for prostate cancer therapy is an effective way of decreasing rectal toxicity in the late post-therapeutic stages. In some occasions, the gel spacer may not be placed symmetrically between the rectum and prostate. There are several forms of a malpositioned spacer, including lateral displacement, rectal wall infiltration, and prostate capsule infiltration...
July 2, 2018: Abdominal Radiology
Huan Zhang, Wenhua Li, Feixiang Hu, Yiqun Sun, Tingdan Hu, Tong Tong
PURPOSE: The purpose of the study was to determine whether the pre-treated MR texture features of colorectal liver metastases (CRLMs) are predictive of therapeutic response after chemotherapy. METHODS: The study included twenty-six consecutive patients (a total of 193 liver metastasis) with unrespectable CRLMs at our institution from August 2014 to February 2016. Lesions were categorized into either responding group or non-responding group according to changes in size...
July 2, 2018: Abdominal Radiology
Cheng William Hong, Austin Marsh, Tanya Wolfson, Jeremy Paige, Soudabeh Fazeli Dekhordy, Alexandra N Schlein, Elise Housman, Lisa H Deiranieh, Charles Q Li, Ashish P Wasnik, Hyun-Jung Jang, Christoph F Dietrich, Fabio Piscaglia, Giovanna Casola, Mary O'Boyle, Katherine M Richman, Mark A Valasek, Michael Andre, Rohit Loomba, Claude B Sirlin
PURPOSE: The purpose of the study is to assess the reader agreement and accuracy of eight ultrasound imaging features for classifying hepatic steatosis in adults with known or suspected hepatic steatosis. METHODS: This was an IRB-approved, HIPAA-compliant prospective study of adult patients with known or suspected hepatic steatosis. All patients signed written informed consent. Ultrasound images (Siemens S3000, 6C1HD, and 4C1 transducers) were acquired by experienced sonographers following a standard protocol...
June 28, 2018: Abdominal Radiology
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