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Abdominal Radiology

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https://www.readbyqxmd.com/read/28634619/implementation-of-li-rads-into-a-radiological-practice
#1
REVIEW
Stefan T Siedlikowski, Ania Z Kielar, Eleanor L Ormsby, Bijan Bijan, Christopher Kagay
Since its introduction in 2011, Liver Imaging Reporting and Data System (LI-RADS) has become an increasingly utilized method for radiologists to categorize lesions for hepatocellular carcinoma (HCC) in patients at risk (American College of Radiology, www.acr.org/quality-safety/resources/lirads 2016). This overview article presents insight into methods of incorporating LI-RADS into an existing clinical practice, highlighting concrete ways to establish this system as a mainstay in any radiologist's evidence-based armamentarium...
June 20, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28634618/ct-and-mri-findings-in-focal-eosinophilic-infiltration-of-the-liver
#2
Bao-Liang Guo, Qiu-Gen Hu, Fu-Sheng Ouyang, Bin Zhang, Yu-Hao Dong, Xiao-Ning Luo, Zhou-Yang Lian, Shui-Xing Zhang
OBJECTIVES: To investigate the findings of computed tomography (CT) and magnetic resonance imaging (MRI) of focal eosinophilic infiltration (FEI) of the liver. METHODS: A retrospective study including 29 patients with confirmed FEI of the liver was performed. We evaluated the lesions' number, distribution, size, shape, margin, attenuation or signal intensity characteristics, the enhancement pattern, and some special features. Spearman correlation analysis was used to analyze the correlation between the number of lesions and the eosinophil counts in peripheral blood...
June 20, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28634617/liver-transplantation-for-hepatocellular-carcinoma
#3
Jennifer Berumen, Alan Hemming
Over the last several years, liver transplantation has evolved to become a widely used treatment for hepatocellular carcinoma (HCC). The criteria used were developed in order to have acceptable outcomes for transplant with survival similar to other indications for transplant. These criteria are discussed in detail along with alternate options, including surgical resection and downstaging of HCC in cirrhotics. Technical considerations of liver transplantation must be considered, and living donor liver transplant is a possibility for treatment...
June 20, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28624925/liver-fibrosis-in-vivo-evaluation-using-intravoxel-incoherent-motion-derived-histogram-metrics-with-histopathologic-findings-at-3-0-t
#4
Fubi Hu, Ru Yang, Zixing Huang, Min Wang, Hanmei Zhang, Xu Yan, Bin Song
PURPOSE: To retrospectively determine the feasibility of intravoxel incoherent motion (IVIM) imaging based on histogram analysis for the staging of liver fibrosis (LF) using histopathologic findings as the reference standard. METHODS: 56 consecutive patients (14 men, 42 women; age range, 15-76, years) with chronic liver diseases (CLDs) were studied using IVIM-DWI with 9 b-values (0, 25, 50, 75, 100, 150, 200, 500, 800 s/mm(2)) at 3.0 T. Fibrosis stage was evaluated using the METAVIR scoring system...
June 17, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28624924/evaluation-of-hepatic-fibrosis-a-review-from-the-society-of-abdominal-radiology-disease-focus-panel
#5
REVIEW
Jeanne M Horowitz, Sudhakar K Venkatesh, Richard L Ehman, Kartik Jhaveri, Patrick Kamath, Michael A Ohliger, Anthony E Samir, Alvin C Silva, Bachir Taouli, Michael S Torbenson, Michael L Wells, Benjamin Yeh, Frank H Miller
Hepatic fibrosis is potentially reversible; however early diagnosis is necessary for treatment in order to halt progression to cirrhosis and development of complications including portal hypertension and hepatocellular carcinoma. Morphologic signs of cirrhosis on ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI) alone are unreliable and are seen with more advanced disease. Newer imaging techniques to diagnose liver fibrosis are reliable and accurate, and include magnetic resonance elastography and US elastography (one-dimensional transient elastography and point shear wave elastography or acoustic radiation force impulse imaging)...
June 17, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28624923/a-comparison-of-enhancement-patterns-on-dynamic-enhanced-ct-and-survival-between-patients-with-pancreatic-neuroendocrine-tumors-with-and-without-intratumoral-fibrosis
#6
Cherry Kim, Jae Ho Byun, Seung-Mo Hong, Soyeon An, Jin Hee Kim, Seung Soo Lee, Hyoung Jung Kim
PURPOSE: To compare CT findings and survival between patients with pancreatic neuroendocrine tumors (pNETs) with and without fibrosis. METHODS: Forty-five pNET patients with intratumoral fibrosis (group A) were matched for age, gender, and tumor size and grade with 45 pNET patients without (group B), and CT images were retrospectively reviewed. Hounsfield units (HUs) of tumors in unenhanced, arterial and portal phases, HU ratio (tumor to normal parenchyma) in each phase, enhancement patterns, visible enhancement pattern changes, and survival were compared...
June 17, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28623377/collision-and-composite-tumors-radiologic-and-pathologic-correlation
#7
Calvin T Sung, Anup Shetty, Christine O Menias, Roozbeh Houshyar, Shreya Chatterjee, Thomas K Lee, Paul Tung, Mohammed Helmy, Chandana Lall
The terms composite and collision tumors have been used interchangeably throughout radiological literature. Both composite and collision tumors involve two morphologically and immunohistochemically distinct neoplasms coexisting within a single organ. However, collision tumors lack the histological cellular intermingling seen in composite tumors. Composite tumors often arise from a common driver mutation that induces a divergent histology from a common neoplastic source while collision tumors may arise from coincidental neoplastic change...
June 16, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28612165/iliac-horns
#8
REVIEW
Brandon L Roller, Raymond B Dyer
No abstract text is available yet for this article.
June 13, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28612164/increasing-efficiency-of-mre-for-diagnosis-of-crohn-s-disease-activity-through-proper-sequence-selection-a-practical-approach-for-clinical-trials
#9
Jordi Rimola, Almudena Alvarez-Cofiño, Tamara Pérez-Jeldres, Sonia Rodríguez, Ignacio Alfaro, Ingrid Ordás, Elena Ricart, Julián Panés
PURPOSE: To derive the best magnetic resonance enterography (MRE) approach for detecting activity and severe lesions in Crohn's disease (CD) to use for selecting patients and measuring response to treatment in clinical trials. METHODS: We compared the accuracies of MRE (T2-weighted sequences, DWI (b = 800 s/mm(2)) sequences, combined T2-weighted and DWI sequences, combined T2-weighted or DWI sequences, and MaRIA score based on T2-weighted and contrast-enhanced T1-weighted sequences) versus ileocolonoscopy (SES-CD) performed within 1 month...
June 13, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28612163/repeatability-and-reproducibility-of-2d-and-3d-hepatic-mr-elastography-with-rigid-and-flexible-drivers-at-end-expiration-and-end-inspiration-in-healthy-volunteers
#10
Kang Wang, Paul Manning, Nikolaus Szeverenyi, Tanya Wolfson, Gavin Hamilton, Michael S Middleton, Florin Vaida, Meng Yin, Kevin Glaser, Richard L Ehman, Claude B Sirlin
PURPOSE: To evaluate the repeatability and reproducibility of 2D and 3D hepatic MRE with rigid and flexible drivers at end-expiration and end-inspiration in healthy volunteers. MATERIALS AND METHODS: Nine healthy volunteers underwent two same-day MRE exams separated by a 5- to 10-min break. In each exam, 2D and 3D MRE scans were performed, each under four conditions (2 driver types [rigid, flexible] × 2 breath-hold phases [end-expiration, end-inspiration]). Repeatability (measurements under identical conditions) and reproducibility (measurements under different conditions) were analyzed by calculating bias, limit of agreement, repeatability coefficient (RC), reproducibility coefficient (RDC), intraclass correlation coefficient (ICC), and concordance correlation coefficient (CCC), as appropriate...
June 13, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28612162/li-rads-and-transplantation-for-hepatocellular-carcinoma
#11
REVIEW
An Tang, Kathryn J Fowler, Victoria Chernyak, William C Chapman, Claude B Sirlin
Patients with hepatocellular carcinoma (HCC) may be eligible for liver transplantation. Liver transplant candidates with HCC compete for the same deceased donor organs as those without HCC. These scarce organs must be allocated fairly and justly to those who will benefit most. Unlike most other cancers, HCC is often diagnosed noninvasively by imaging without biopsy confirmation. Therefore, radiologists play an important role in diagnosing definite HCC (i.e., LR-5 category) that counts toward staging and determination of liver transplant eligibility...
June 13, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28612161/texture-analysis-of-fdg-pet-ct-for-differentiating-between-fdg-avid-benign-and-metastatic-adrenal-tumors-efficacy-of-combining-suv-and-texture-parameters
#12
Masatoyo Nakajo, Megumi Jinguji, Masayuki Nakajo, Tetsuya Shinaji, Yoshiaki Nakabeppu, Yoshihiko Fukukura, Takashi Yoshiura
PURPOSE: To retrospectively investigate the SUV-related and texture parameters individually and in combination for differentiating between F-18-fluorodeoxyglucose (FDG)-avid benign and metastatic adrenal tumors with PET/CT. METHODS: Thirteen benign adrenal tumors (BATs) and 22 metastatic adrenal tumors (MATs) with a metabolic tumor volume (MTV) > 10.0 cm(3) and SUV ≥ 2.5 were included. SUVmax, MTV, total lesion glycolysis, and four textural parameters [entropy, homogeneity, intensity variability (IV), and size-zone variability] were obtained...
June 13, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28612160/reuse-and-reduce-abdominal-ct-lumbar-spine-mri-and-a-potential-1-2-to-3-4-billion-dollars-in-cost-savings
#13
Mitchell A Klein
PURPOSE: To determine how much money could potentially be saved by re-evaluating a patient's prior recent abdominal CT for lumbar spine pathology instead of ordering a lumbar spine MRI. METHODS: Abdominal CT studies, from all consecutive patients who had an abdominal CT within 12 months prior to a lumbar spine MRI obtained between 11/1/15 and 5/30/16, were retrospectively reviewed in a blinded fashion for the presence of any significant lumbar spine abnormalities...
June 13, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28600614/removing-barriers-to-early-ct-scanning-in-emergency-and-inpatient-radiology
#14
LETTER
Timothy Murray, Michael Lee
Over the last 5 years, several key trends have emerged which challenge the established paradigm of inpatient computed tomography (CT) services. Many widespread practices seem intuitive and have become dogmatic; these include pre-hydration for renal injury, holding medications which predispose to metabolic acidosis, steroid administration for allergies, oral contrast administration, and fasting. The efficacy and cost-benefit of all of these measures have been challenged by recent publications. A common theme has emerged, delaying inpatient CT scans worsens patient outcomes and increases cost...
June 9, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28597310/scientific-paper-abstracts-presented-at-the-society-of-abdominal-radiology-2017-annual-scientific-meeting-and-educational-course-march-26-31-2017-hollywood-florida
#15
(no author information available yet)
No abstract text is available yet for this article.
June 9, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28580540/updates-for-the-radiologist-in-non-muscle-invasive-muscle-invasive-and-metastatic-bladder-cancer
#16
REVIEW
Jooae Choe, Marta Braschi-Amirfarzan, Sree Harsha Tirumani, Atul B Shinagare, Kyung Won Kim, Nikhil H Ramaiya, Katherine M Krajewski
Urothelial bladder cancer is a common malignancy requiring a multidisciplinary approach to treatment. Significant recent advances have been made in terms of the genetic and molecular characterization of bladder cancer subtypes, and novel treatment approaches are being investigated and approved. Given the important role of imaging in the diagnosis, staging, and follow-up of this disease, it is necessary for radiologists to remain up-to-date in terms of nomenclature and standards of care. In this review, recent developments in bladder cancer characterization and treatment will be discussed, with reference to the contributions of imaging in non-muscle-invasive, muscle-invasive, and metastatic settings...
June 3, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28580539/the-light-bulb-sign-in-pheochromocytoma
#17
REVIEW
Eduardo Kaiser Ururahy Nunes Fonseca, Marco Philipe Teles Reis Ponte, Fernando Ide Yamauchi, Ronaldo Hueb Baroni
No abstract text is available yet for this article.
June 3, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28580538/li-rads-m-lr-m-definite-or-probable-malignancy-not-specific-for-hepatocellular-carcinoma
#18
Kathryn J Fowler, Theodora A Potretzke, Thomas A Hope, Eduardo A Costa, Stephanie R Wilson
LI-RADS v2017 introduces major changes to the diagnostic criteria for LR-M observations to better guide radiologists in the use of this malignant category designation. LR-M is intended to preserve the specificity of the LI-RADS algorithm for diagnosis of HCC while not losing sensitivity for diagnosis of malignancy. The purpose of this paper is to provide a brief background on LR-M, discuss the diagnostic criteria new to v2017, special considerations for its application, and management implications.
June 3, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28580537/ct-imaging-spectrum-of-infiltrative-renal-diseases
#19
REVIEW
David H Ballard, Luis De Alba, Matias Migliaro, Carlos H Previgliano, Guillermo P Sangster
Most renal lesions replace the renal parenchyma as a focal space-occupying mass with borders distinguishing the mass from normal parenchyma. However, some renal lesions exhibit interstitial infiltration-a process that permeates the renal parenchyma by using the normal renal architecture for growth. These infiltrative lesions frequently show nonspecific patterns that lead to little or no contour deformity and have ill-defined borders on CT, making detection and diagnosis challenging. The purpose of this pictorial essay is to describe the CT imaging findings of various conditions that may manifest as infiltrative renal lesions...
June 3, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28567485/mucinous-nonneoplastic-cyst-of-the-pancreas-ct-and-mri-appearances
#20
Kousei Ishigami, Akihiro Nishie, Naoki Mochidome, Yoshiki Asayama, Yasuhiro Ushijima, Daisuke Kakihara, Daisuke Okamoto, Nobuhiro Fujita, Takao Ohtsuka, Yoshihiro Miyasaka, Tomoyuki Hida, Tomoharu Yoshizumi, Hiroshi Honda
PURPOSE: The purpose of this retrospective study was to evaluate imaging features of mucinous nonneoplastic cyst (MNNC) of the pancreas. MATERIALS AND METHODS: Three (0.9%) patients with MNNC of the pancreas were found in 335 surgically resected pancreatic cystic lesions. Three MDCT and two MRI/MRCP studies were retrospectively reviewed. RESULTS: Three cases of MNNC were found in the pancreatic neck, body, and tail, respectively. All the three cases were multilocular without communication with the main pancreatic duct (MPD), although upstream MPD dilatation was seen in two of the three cases...
May 31, 2017: Abdominal Radiology
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