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https://www.readbyqxmd.com/read/28224304/visualization-of-draining-vein-in-focal-nodular-hyperplasia-by-superb-microvascular-imaging-report-of-two-cases
#1
Hiroko Naganuma, Hideaki Ishida, Masahiro Ogawa, Katsunori Suzuki
Focal nodular hyperplasia (FNH) is the second most common benign tumor of the liver, and diagnosis and follow-up without invasive procedures are now highly recommended. FNH shows a characteristic vascular structure called "spoke-wheel appearance". However, this appearance relies on the mode of the feeding artery, and the mode of the draining vein has not been sufficiently studied until recently. Superb microvascular imaging (SMI) is a new Doppler technology designed to improve visualization of the blood flow, especially slow flow signals from fine vessels, using a new algorithm...
February 21, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28218196/applications-of-contrast-enhanced-harmonic-endoscopic-ultrasound-on-biliary-focal-liver-lesions-and-vascular-diseases
#2
REVIEW
Jun-Ho Choi, Dong-Wan Seo
Over the last decade, the clinical applications of contrast-enhanced harmonic endoscopic ultrasound (CH-EUS) have increased steadily. The development of second-generation ultrasound contrast agents has allowed superior visualization of the microvasculature and tissue perfusion of the target lesion. This methodology has proven useful in the differential diagnosis of solid pancreatic masses and lymph nodes. In addition, the applicability of CH-EUS has expanded to nonpancreas structures such as biliary, focal liver lesions, and vascular disease...
January 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28213851/-sonoelastography-in-daily-clinical-routine
#3
J Rübenthaler, K Müller-Peltzer, M Reiser, D Rjosk-Dendorfer, D-A Clevert
CLINICAL ISSUE: In the daily clinical routine characterization of focal lesions using native B‑mode classical ultrasound and color Doppler can be difficult or insufficient; therefore, additional diagnostic information must be taken into consideration. STANDARD RADIOLOGICAL METHODS: Standard radiological methods in the daily clinical routine include native B‑mode ultrasound and color Doppler ultrasound. METHODICAL INNOVATIONS: Using sonoelastography it is possible to evaluate and characterize tissue properties and focal lesions regarding their stiffness to acquire additional information on a noninvasive basis...
February 17, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28212679/histopathological-study-of-cardiac-lesions-in-methamphetamine-poisoning-related-deaths
#4
Maryam Akhgari, Homeira Mobaraki, Afshar Etemadi-Aleagha
BACKGROUND: Methamphetamine abuse is a worldwide health concern. Methamphetamine causes health hazards in many vital organs. It can cause damage to cardiac tissue via catecholamines release. Methamphetamine related deaths are becoming one of the most important problems in Iran. The purpose of the present study was to determine cardiac pathology in methamphetamine poisoning-related deaths. METHODS: The study included 100 cases of methamphetamine poisoning-related deaths and 100 cases as control group...
February 17, 2017: Daru: Journal of Faculty of Pharmacy, Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28211805/diagnostic-accuracy-and-interobserver-variability-of-dynamic-vascular-pattern-dvp-in-primary-liver-malignancies-a-simple-semiquantitative-tool-for-the-analysis-of-contrast-enhancement-patterns
#5
B Schellhaas, M J Waldner, R S GÖrtz, F Vitali, Ch Kielisch, L Pfeifer, D Strobel, R Janka, M F Neurath, D Wildner
BACKGROUND: Contrast-enhanced ultrasound (CEUS) is a valuable tool in the diagnostic approach of focal liver lesions, but occasionally subjective and observer-dependent. Semiquantitative evaluation of dynamic CEUS (DCEUS) with standardised software programmes such as Dynamic Vascular Pattern (DVP) could help to improve diagnostic accuracy and objectivity in liver tumour assessment. OBJECTIVES: The present study aimed at evaluation of diagnostic accuracy of DVP in a clinical setting...
February 17, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28203580/unusual-presentation-of-diffuse-large-b-cell-lymphoma-with-splenic-infarcts
#6
Vivek Kumar, Parita Soni, Vishangi Dave, Jonathan Harris
A 67-year-old man presented with a 3-day history of abdominal pain, fever, and significant weight loss over 2 months. Physical examination revealed left upper quadrant tenderness, hepatomegaly, splenomegaly, and bilateral pitting edema but peripheral lymphadenopathy was absent. Laboratory tests showed anemia, thrombocytopenia, elevated prothrombin time (PT), partial thromboplastin time (PTT), and increased lactate dehydrogenase (LDH). PTT was corrected completely in mixing study. Further workup for the cause of coagulopathy revealed decreased levels of all clotting factors except factor VIII and increase fibrinogen levels, which ruled out disseminated intravascular coagulation (DIC)...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28199961/proteomic-analysis-of-laser-capture-microdissected-focal-lesions-in-a-rat-model-of-progenitor-marker-positive-hepatocellular-carcinoma
#7
Adeola O Adebayo Michael, Nagib Ahsan, Valerie Zabala, Heather Francois-Vaughan, Stephanie Post, Kate E Brilliant, Arthur R Salomon, Jennifer A Sanders, Philip A Gruppuso
We have shown previously that rapamycin, the canonical inhibitor of the mechanistic target of rapamycin (mTOR) complex 1, markedly inhibits the growth of focal lesions in the resistant hepatocyte (Solt-Farber) model of hepatocellular carcinoma (HCC) in the rat. In the present study, we characterized the proteome of persistent, pre-neoplastic focal lesions in this model. One group was administered rapamycin by subcutaneous pellet for 3 weeks following partial hepatectomy and euthanized 4 weeks after the cessation of rapamycin...
February 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28177567/diagnostic-accuracy-of-indocyanine-green-fluorescence-imaging-and-multi-detector-row-computed-tomography-for-identifying-hepatocellular-carcinoma-with-liver-explant-correlation
#8
Koichi Masuda, Junichi Kaneko, Yoshikuni Kawaguchi, Junichi Togashi, Junichi Arita, Nobuhisa Akamatsu, Yoshihiro Sakamoto, Kiyoshi Hasegawa, Sumihito Tamura, Norihiro Kokudo
AIM: Indocyanine green (ICG)-fluorescence imaging is useful for detecting hepatocellular carcinoma (HCC) during surgery, but its accuracy has not been compared to that of multi-detector row computed tomography (MDCT) with liver explant correlation. The aim of present study was to clarify the precise diagnostic accuracy of ICG-fluorescence imaging for detecting HCC in a whole explant liver survey. METHODS: Thirty-three patients with end-stage liver disease (mean age: 53 years) were prospectively enrolled in the present study...
February 8, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28170300/effect-of-radiation-dose-reduction-and-reconstruction-algorithm-on-image-noise-contrast-resolution-and-detectability-of-subtle-hypoattenuating-liver-lesions-at-multidetector-ct-filtered-back-projection-versus-a-commercial-model-based-iterative-reconstruction
#9
Justin Solomon, Daniele Marin, Kingshuk Roy Choudhury, Bhavik Patel, Ehsan Samei
Purpose To determine the effect of radiation dose and iterative reconstruction (IR) on noise, contrast, resolution, and observer-based detectability of subtle hypoattenuating liver lesions and to estimate the dose reduction potential of the IR algorithm in question. Materials and Methods This prospective, single-center, HIPAA-compliant study was approved by the institutional review board. A dual-source computed tomography (CT) system was used to reconstruct CT projection data from 21 patients into six radiation dose levels (12...
February 7, 2017: Radiology
https://www.readbyqxmd.com/read/28151552/how-to-develop-a-contrast-enhanced-ultrasound-program
#10
Richard G Barr
With the recent Food and Drug Administration approval of Lumason (sulfur hexafluoride lipid-type A microsphere, Bracco Diagnostics Inc, Monroe Township, NJ) for contrast-enhanced ultrasound (CEUS) to characterize focal liver lesions in both adult and pediatric patients, widespread use of CEUS is expected in the United States. This paper provides guidance in setting up a CEUS program, and reviews the practical details that will need to be instituted in a standard ultrasound department to provide both safe and efficient use of CEUS...
February 2, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28145108/detection-of-liver-metastases-in-cancer-patients-with-geographic-fatty-infiltration-of-the-liver-the-added-value-of-contrast-enhanced-sonography
#11
Tommaso Vincenzo Bartolotta, Adele Taibbi, Dario Picone, Andrea Anastasi, Massimo Midiri, Roberto Lagalla
Purpose: The aim of this study is to assess the role of contrast-enhanced ultrasonography (CEUS) in the detection of liver metastases in cancer patients with geographic liver fatty deposition on greyscale ultrasonography (US). Methods: Thirty-seven consecutive cancer patients (24 women and 13 men; age, 33 to 80 years; mean, 58.1 years) with geographic liver fatty deposition, but without any detectable focal liver lesion on greyscale US, underwent sulphur hexafluoride-enhanced US...
November 16, 2016: Ultrasonography
https://www.readbyqxmd.com/read/28144704/gaucher-disease-in-the-liver-on-hepatocyte-specific-contrast-agent-enhanced-mr-imaging
#12
Rama S Ayyala, Lisa A Teot, Jeanette M Perez Rossello
Gaucher disease is a hereditary lipid storage disorder that affects the enzyme beta glucocerebrosidase, causing accumulation of glucocerebroside in macrophages of the reticuloendothelial system. Accumulation can occur in the liver and spleen, manifesting as hepatosplenomegaly, as well as within the bone marrow. Hepatic involvement is usually diffuse but can occasionally manifest as focal liver lesions. We present a case of a 2-year-old boy with Gaucher disease and an infiltrating liver lesion detected on imaging, which was pathologically shown to be focal changes related to the disease...
February 1, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28141517/computer-aided-diagnosis-of-focal-liver-lesions-using-contrast-enhanced-ultrasonography-with-perflubutane-microbubbles
#13
Satoshi Kondo, Kazuya Takagi, Mutsumi Nishida, Takahito Iwai, Yusuke Kudo, Kouji Ogawa, Toshiya Kamiyama, Hitoshi Shibuya, Kaoru Kahata, Chikara Shimizu
This study proposes an automatic classification method based on machine learning in contrast-enhanced ultrasonography (CEUS) of focal liver lesions (FLLs) using the contrast agent Sonazoid R ⃝ . This method yields spatial and temporal features in the arterial phase, portal phase, and post-vascular phase, as well as max-hold images. The lesions are classified as benign or malignant and again as benign, hepatocellular carcinoma (HCC), or metastatic liver tumor using support vector machines (SVM) with a combination of selected optimal features...
January 26, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28128291/gd-eob-dtpa-enhanced-mr-relaxometry-for-the-detection-and-staging-of-liver-fibrosis
#14
Michael Haimerl, Kirsten Utpatel, Niklas Verloh, Florian Zeman, Claudia Fellner, Dominik Nickel, Andreas Teufel, Stefan Fichtner-Feigl, Matthias Evert, Christian Stroszczynski, Philipp Wiggermann
Gd-EOB-DTPA, a liver-specific contrast agent with T1-shortening effects, is routinely used in clinical routine for detection and characterization of focal liver lesions and has recently received increasing attention as a tool for the quantitative analyses of liver function. We report the relationship between the extent of Gd-EOB-DTPA- induced T1 relaxation and the degree of liver fibrosis, which was assessed according to the METAVIR score. For the T1 relaxometry, a transverse 3D VIBE sequence with inline T1 calculation was acquired prior to and 20 minutes after Gd-EOB-DTPA administration...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28126883/prognostic-value-of-bone-marrow-tracer-uptake-pattern-in-baseline-pet-scan-in-hodgkin-lymphoma-results-from-an-international-collaborative-study
#15
Colette Zwarthoed, Tarec Cristoffer El-Galaly, Maria Canepari, Matthieu John Ouvrier, Julien Viotti, Marc Ettaiche, Simonetta Viviani, Luigi Rigacci, Livio Trentin, Chiara Rusconi, Stefano Luminari, Maria Cantonetti, Silvia Bolis, Anna Borra, Jacques Darcourt, Flavia Salvi, Edyta Subocz, Joanna Tajer, Waldemar Kulikowski, Bogdan Malkowski, Jan Maciej Zaucha, Andrea Gallamini
RATIONALE: Positron Emission Tomography/Computed Tomography (PET/CT)-ascertained bone marrow involvement (BMI) constitutes the single most important reason for upstaging by PET/CT in Hodgkin lymphoma (HL). However, BMI assessment in PET/CT can be challenging. This study analysed the clinico-pathological correlations and prognostic meaning of different patterns of bone marrow (BM)-Fluorodeoxyglucose (FDG)-uptake in HL. PATIENTS AND METHODS: 180 newly diagnosed early unfavourable and advanced stage HL patients, all scanned at baseline and after 2 Adriamycin-Bleomycin-Vinblastine-Dacarbazine (ABVD) courses with FDG-PET, enrolled in two International studies aimed at assessing the role of interim PET scan in HL, were retrospectively included...
January 26, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28124483/mutations-in-ttc21b-cause-different-phenotypes-in-two-childhood-cases-in-china
#16
Hongwen Zhang, Baige Su, Xiaoyu Liu, Huijie Xiao, Jie Ding, Yong Yao
AIM: The TTC21B gene is now known as causative of nephronophthisis-related ciliopathies (NPHP-RC). We reported two Chinese pediatric cases with end-stage renal disease and other phenotypes caused by the TTC21B gene mutations. METHODS: The clinical features of Chinese pediatric cases with NPHP-RC were summarized. Mutation analysis of the TTC21B gene was performed using next-generation sequencing. RESULTS: The two cases both had nephrotic proteinuria, renal failure, hypertension and abnormal liver function (or hepatic fibrosis)...
January 26, 2017: Nephrology
https://www.readbyqxmd.com/read/28123578/percutaneous-microwave-ablation-for-benign-focal-liver-lesions-initial-clinical-results
#17
Zhigang Cheng, Ping Liang, Xiaoling Yu, Zhiyu Han, Fangyi Liu, Jie Yu, Xin Li
Benign focal liver lesions (BFLLs) have become a common disease diagnosed in the clinical setting following the advancement of imaging techniques. The aim of the present study was to evaluate the safety and clinical outcomes of percutaneous microwave (MW) ablation, guided by ultrasound (US), for the treatment of BFLLs. Between May 2005 and January 2011, 44 BFLLs (mean maximum diameter, 33.9±13.1 mm) in 37 patients (23 women and 14 men) were treated by US-guided percutaneous MW ablation with cooled-shaft antennae...
January 2017: Oncology Letters
https://www.readbyqxmd.com/read/28117103/well-differentiated-hepatocellular-nodule-making-a-diagnosis-on-biopsy-and-resection-specimens-of-patients-with-advanced-stage-chronic-liver-disease
#18
Prodromos Hytiroglou
Guided liver biopsy is commonly employed to determine the identity of distinct hepatic nodules detected on imaging studies of patients with advanced stage chronic liver diseases. Discrimination among large regenerative nodule, dysplastic nodule and well-differentiated hepatocellular carcinoma is often difficult and relies on subtle histologic findings. Sampling is an important consideration in biopsy material, as compared to resection specimens, because the diagnostic features may be focal within the nodule...
December 20, 2016: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28113364/-i-ex-vivo-i-hifu-experiments-using-a-32%C3%A3-32-element-cmut-array
#19
Hyo-Seon Yoon, Chienliu Chang, Ji Hoon Jang, Anshuman Bhuyan, Jung Woo Choe, Amin Nikoozadeh, Ronald Watkins, Doug Stephens, Kim Butts Pauly, Butrus Khuri-Yakub
High-intensity focused ultrasound (HIFU) has been used as noninvasive treatment for various diseases. For these therapeutic applications, capacitive micromachined ultrasonic transducers (CMUTs) have advantages that make them potentially preferred transducers over traditional piezoelectric transducers. In this paper, we present the design and the fabrication process of an 8×8-mm2, 32×32-element 2-D CMUT array for HIFU applications. To reduce the system complexity for addressing the 1024 transducer elements, we propose to group the CMUT array elements into eight HIFU channels based on the phase delay from the CMUT element to the targeted focal point...
September 5, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28087475/immunohistochemical-approach-for-the-diagnosis-of-a-liver-mass-on-small-biopsy-specimens
#20
Won-Tak Choi, Rageshree Ramachandran, Sanjay Kakar
Well-differentiated hepatocellular carcinoma (HCC) shares overlapping histological features with benign hepatocellular lesions, including hepatocellular adenoma (HCA) and focal nodular hyperplasia (FNH) in non-cirrhotic liver, and with high-grade dysplastic nodule (HGDN) in cirrhotic liver. Several metastatic tumors, such as neuroendocrine tumor, renal cell carcinoma, adrenocortical carcinoma, melanoma, and epithelioid angiomyolipoma, can be indistinguishable from HCC on histologic grounds. Since this distinction has important therapeutic implications, judicious use of immunohistochemical markers plays an important role in establishing an accurate diagnosis, especially when limited material of tumor is available on cell block or a small core biopsy...
January 10, 2017: Human Pathology
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