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Hepatocellular adenoma

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https://www.readbyqxmd.com/read/29209117/application-of-superb-microvascular-imaging-in-focal-liver-lesions
#1
Meng-Na He, Ke Lv, Yu-Xin Jiang, Tian-An Jiang
AIM: To explore the ability of superb microvascular imaging (SMI) in differential diagnosis of focal liver lesions (FLLs) and to compare SMI morphology findings to those of color Doppler ultrasound and enhanced imaging. METHODS: Twenty-four patients with 31 FLLs were included in our study, with diagnoses of hemangioma (HE) (n = 17), hepatocellular carcinoma (HCC) (n = 5), metastatic lesions (n = 5), primary hepatic lymphoma (n = 1), focal nodular hyperplasia (FNH) (n = 2), and adenoma (n = 1)...
November 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29197930/the-ppar%C3%AE-dependent-rodent-liver-tumor-response-is-not-relevant-to-humans-addressing-misconceptions
#2
REVIEW
J Christopher Corton, Jeffrey M Peters, James E Klaunig
A number of industrial chemicals and therapeutic agents cause liver tumors in rats and mice by activating the nuclear receptor peroxisome proliferator-activated receptor α (PPARα). The molecular and cellular events by which PPARα activators induce rodent hepatocarcinogenesis have been extensively studied elucidating a number of consistent mechanistic changes linked to the increased incidence of liver neoplasms. The weight of evidence relevant to the hypothesized mode of action (MOA) for PPARα activator-induced rodent hepatocarcinogenesis is summarized here...
December 2, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/29167952/growth-of-focal-nodular-hyperplasia-is-not-a-reason-for-surgical-intervention-but-patients-should-be-referred-to-a-tertiary-referral-centre
#3
Mirelle E E Bröker, Anne J Klompenhouwer, Marcia P Gaspersz, Annick M E Alleleyn, Roy S Dwarkasing, Indra C Pieters, Robert A de Man, Jan N M IJzermans
BACKGROUND: When a liver lesion diagnosed as focal nodular hyperplasia (FNH) increases in size, it may cause doubt about the initial diagnosis. In many cases, additional investigations will follow to exclude hepatocellular adenoma or malignancy. This retrospective cohort study addresses the implications of growth of FNH for clinical management. METHODS: We included patients diagnosed with FNH based on ≥2 imaging modalities between 2002 and 2015. Characteristics of patients with growing FNH with sequential imaging in a 6-month interval were compared to non-growing FNH...
November 22, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/29167944/contrast-enhanced-ultrasound-of-benign-liver-lesions
#4
Jessica G Zarzour, Kristin K Porter, Hisham Tchelepi, Michelle L Robbin
Liver lesions are often incidentally detected on ultrasound examination and may be incompletely characterized, requiring further imaging. Contrast-enhanced ultrasound (CEUS) was recently approved by the Food and Drug Administration in the United States for liver lesion characterization. CEUS has the ability to characterize focal liver lesions and has been shown to be superior to color Doppler and power Doppler ultrasound in the detection of tumor vascularity. Differentiating benign from malignant liver lesions is essential to characterizing liver lesions...
November 22, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/29146062/three-cases-of-adrenocortical-tumors-mistaken-for-hepatocellular-carcinomas-diagnostic-pitfalls-and-differential-diagnosis
#5
Won Young Park, Hyung Il Seo, Kyung Un Choi, Ahrong Kim, Young Keum Kim, So Jeong Lee, Chang Hun Lee, Gi Yeong Huh, Do Youn Park
Adrenocortical adenomas and carcinomas in other parenchyma are extremely rare, with few cases reported and because of the rarity of these tumors, they occasionally cause problems during diagnosis. Adrenal cortical neoplasms in liver parenchyma can be present in 3 forms, including direct invasion or adhesion to liver parenchyma, tumors arising in adrenohepatic fusion tissue or in ectopic adrenal gland tissue. We report 3 cases of adrenal cortical tumors that were misdiagnosed as hepatocellular carcinoma in the preoperative state...
December 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29142168/background-data-on-nod-shi-scid-il-2r%C3%AE-null-mice-nog-mice
#6
Kenichiro Kasahara, Yachiyo Fukunaga, Saori Igura, Rie Andoh, Tsubasa Saito, Isamu Suzuki, Hiroyuki Kanemitsu, Daisuke Suzuki, Ken Goto, Daichi Nakamura, Masahiro Mochizuki, Masahiko Yasuda, Ryo Inoue, Kazutoshi Tamura, Mariko Nagatani
To obtain background data of NOD/Shi-scid IL-2Rγ(null) (NOG) mice, severely immunedeficient mice, a total of 120 animals were examined at 7, 26 and 52 weeks-old (20 mice/sex/group). The survival rate at 52 weeks-old was 95% (19/20) in both sexes. Clinically, circling behavior in one direction along the cage wall was observed in males after 8 weeks and females after 47 weeks-old, and hunchback position was found in males after 32 weeks-old. Hematologically, lymphocyte count markedly decreased at all ages, while white blood cell count increased in several mice at 52 weeks-old...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/29127141/copper-deposition-in-focal-nodular-hyperplasia-and-inflammatory-hepatocellular-adenoma
#7
Vishal S Chandan, Sejal S Shah, Taofic Mounajjed, Michael S Torbenson, Tsung-Teh Wu
AIMS: To examine copper deposition in focal nodular hyperplasia (FNH) and inflammatory hepatocellular adenoma (IHA) and to determine if it can play a role in their differentiation. METHODS: 28 FNHs and 19 IHAs from surgical resections showing typical morphological and immunohistochemical features were stained with rhodanine to evaluate for copper deposition. Histological features such as nodularity, fibrous bands, ductular proliferation, steatosis, ballooned hepatocytes and lymphocytic inflammation were also scored...
November 10, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29118993/cellular-characteristics-of-keratin-19-positive-canine-hepatocellular-tumours-explain-its-aggressive-behaviour
#8
Renee G van Sprundel, Ted Sgam van den Ingh, Baukje A Schotanus, Monique E van Wolferen, Louis C Penning, Jan Rothuizen, Bart Spee
The expression of the hepatic progenitor cell marker keratin 19 (K19) in canine hepatocellular carcinomas is linked with a poor prognosis. To better understand this aggressive behaviour, K19-positive hepatocellular carcinomas (n=5) and K19-negative hepatocellular adenomas (n=6) were immunohistochemically stained for proteins involved in malignant tumour development. The K19-positive carcinomas showed marked positivity for platelet-derived growth factor receptor alpha polypeptide (PDGFRα), laminin, integrin beta-1/CD29, B-cell-specific Moloney murine leukaemia virus Integration site 1, glypican-3 (GPC-3) and prominin-1/CD133, in contrast with K19-negative hepatocellular adenomas...
2017: Veterinary Record Open
https://www.readbyqxmd.com/read/29116626/unclassified-hepatocellular-adenoma-in-a-middle-aged-woman-with-glucose-intolerance
#9
Kumi Ozaki, Kenichi Harada, Toru Yamamoto, Hiroyuki Aoyagi, Yasuharu Kaizaki, Jun Yoshikawa
The patient was a 43-year-old woman with obesity (body mass index: 29.1) and glucose intolerance who was not taking oral contraceptives. An ultrasound showed a hypoechoic hepatic mass. Dynamic contrast-enhanced computed tomography revealed a lesion in segment 6 that showed homogeneous and slight-to-moderate enhancement in the arterial phase with persistent enhancement during the portal and equilibrium phases. On magnetic resonance (MR) imaging, the lesion demonstrated hyperintensity on T2- and diffusion-weighted images and hypointensity in the hepatobiliary phase of gadoxetic-acid-enhanced MR imaging...
November 7, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/29113212/knockdown-of-fuse-binding-protein-1-enhances-the-sensitivity-of-epithelial-ovarian-cancer-cells-to-carboplatin
#10
Jinli Zhang, Xifeng Xiong, Xing Hua, Wenjuan Cao, Shengnan Qin, Libing Dai, Peihong Liang, Huiling Zhang, Zhihe Liu
Epithelial ovarian cancer (EOC) affects almost 25,000 women annually and is the fifth most common malignancy in women in North America. A combination of surgery and cytotoxic chemotherapy may produce a favorable clinical response. The platinum-paclitaxel combination regimen is the chemotherapy gold-standard for advanced ovarian cancer, and carboplatin is one of the agents in this combination therapy. However, the majority of patients eventually experience a relapse due to the development of platinum resistance...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29110059/differentiating-focal-nodular-hyperplasia-from-hepatocellular-adenoma-is-hepatobiliary-phase-mri-hbp-mri-using-linear-gadolinium-chelates-always-useful
#11
Marion Roux, Frederic Pigneur, Laurence Baranes, Julien Calderaro, Mélanie Chiaradia, Thomas Decaens, Sandrine Kastahian, Anaïs Charles-Nelson, Lambros Tselikas, Charlotte Costentin, Alexis Laurent, Daniel Azoulay, Ariane Mallat, Alain Rahmouni, Alain Luciani
PURPOSE: To assess the value of Hepatobiliary phase MRI (HPB-MRI) to differentiate FNH and HCA, and evaluate its impact on diagnostic accuracy, diagnostic confidence, inter-observer variability, and patient clinical management. METHODS: Forty-nine patients referred for Gd-BOPTA-enhanced MRI were retrospectively included in this IRB-approved study, with a total of 119 lesions-90 FNH and 29 HCA. Two observers separately assessed in 2 distinct randomized reading sessions the performance of MRI with (HBP-MRI) or without (conventional MRI) the use of HBP images...
November 6, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/29101032/p-q511l-mutation-of-hnf1%C3%AE-in-hepatocellular-carcinoma-suppresses-the-transcriptional-activity-and-the-anti-tumor-effect-of-hnf1%C3%AE
#12
Chen-Hong Ding, Long-Fei Deng, Fei Chen, Kai Ding, Wan-Sheng Chen, Wei-Fen Xie, Xin Zhang
Hepatocyte nuclear factor 1α (HNF1α) is a liver-enriched transcription factor that regulates many aspects of hepatocyte functions. Our previous studies have demonstrated that HNF1α has potent therapeutic effects on hepatocellular carcinoma (HCC). Mutations in HNF1α gene are frequently associated with maturity-onset diabetes of the young type 3 (MODY3) and hepatocellular adenomas. However, the association of HNF1α mutation and HCC remains elusive. In this study, the point mutation of HNF1α gene with c...
October 31, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29046336/pp2a-inactivation-mediated-by-ppp2r4-haploinsufficiency-promotes-cancer-development
#13
Ward Sents, Bob Meeusen, Petar Kalev, Enrico Radaelli, Xavier Sagaert, Eline Miermans, Dorien Haesen, Caroline Lambrecht, Mieke Dewerchin, Peter Carmeliet, Jukka Westermarck, Anna Sablina, Veerle Janssens
Protein phosphatase 2A (PP2A) complexes counteract many oncogenic kinase pathways. In cancer cells, PP2A function can be compromised by several mechanisms, including sporadic mutations in its scaffolding A and regulatory B subunits or more frequently through overexpression of cellular PP2A inhibitors. Here we identify a novel genetic mechanism by which PP2A function is recurrently affected in human cancer, involving haploinsufficiency of PPP2R4, a gene encoding the cellular PP2A activator PTPA. Notably, up to 70% of cancer patients showed a heterozygous deletion or missense mutations in PPP2R4 Cancer-associated PTPA mutants exhibited decreased abilities to bind the PP2A-C subunit or activate PP2A and failed to reverse the tumorigenic phenotype induced by PTPA suppression, indicating they function as null alleles...
October 18, 2017: Cancer Research
https://www.readbyqxmd.com/read/29042975/comparison-of-dwibs-t2-image-fusion-and-pet-ct-for-the-diagnosis-of-cancer-in-the-abdominal-cavity
#14
Minoru Tomizawa, Fuminobu Shinozaki, Yoshitaka Uchida, Katsuhiro Uchiyama, Satomi Tanaka, Takafumi Sunaoshi, Daisuke Kano, Eriko Sugiyama, Misaki Shite, Ryouta Haga, Yoshiya Fukamizu, Toshiyuki Fujita, Satoshi Kagayama, Rumiko Hasegawa, Yoshinori Shirai, Yasufumi Motoyoshi, Takao Sugiyama, Shigenori Yamamoto, Naoki Ishige
Fusion images of diffusion-weighted whole-body imaging with background body signal suppression and T2-weighted image (DWIBS/T2) demonstrate a strong signal for malignancies, with a high contrast against the surrounding tissues, and enable anatomical analysis. In the present study, DWIBS/T2 was compared with (18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) for diagnosing cancer in the abdomen. Patient records, including imaging results of examination conducted between November 2012 and May 2014, were analyzed retrospectively...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28982300/laparoscopic-liver-resection-for-hemorrhagic-hepatocellular-adenoma-in-a-pregnant-patient
#15
F Gryspeerdt, R Aerts
INTRODUCTION: Hepatocellular adenoma (HCA) is a benign neoplasm of the liver, however, with a potential for life-threatening hemorrhage. The unpredictable course during pregnancy poses a clinical dilemma in the pregnant patient. Intra-peritoneal rupture may lead to life-threatening situations with adverse outcome for mother and unborn child. A pre-emptive strategy with adequate treatment before pregnancy is strongly advised. However, the strategy for treating symptomatic HCA during pregnancy remains challenging as experience is limited...
October 5, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28973635/liver-directed-gene-therapy-for-murine-glycogen-storage-disease-type-ib
#16
Joon Hyun Kwon, Young Mok Lee, Jun-Ho Cho, Goo-Young Kim, Javier Anduaga, Matthew F Starost, Brian C Mansfield, Janice Y Chou
Glycogen storage disease type-Ib (GSD-Ib), deficient in the glucose-6-phosphate transporter (G6PT), is characterized by impaired glucose homeostasis, myeloid dysfunction, and long-term risk of hepatocellular adenoma (HCA). We examined the efficacy of G6PT gene therapy in G6pt-/- mice using recombinant adeno-associated virus (rAAV) vectors, directed by either the G6PC or the G6PT promoter/enhancer. Both vectors corrected hepatic G6PT deficiency in murine GSD-Ib but the G6PC promoter/enhancer was more efficacious...
November 15, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28943905/screening-the-key-genes-of-hepatocellular-adenoma-via-microarray-analysis-of-dna-expression-and-methylation-profiles
#17
Dan Liu, Pengfei Liu, Liye Cao, Quan Zhang, Yaqing Chen
The aim of the present study was to identify the biomarkers involved in the development of hepatocellular adenoma (HCA) through integrated analysis of gene expression and methylation microarray. The microarray dataset GSE7473, containing HNF1α-mutated HCA and their corresponding non-tumor livers, 5 HNF1α-mutated HCA and 4 non-related non-tumor livers, was downloaded from the Gene Expression Omnibus (GEO) database. The DNA methylation profile GSE43091, consisting of 50 HCA and 4 normal liver tissues, was also downloaded from the GEO database...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943392/an-integrative-analysis-of-chemically-induced-cirrhosis-associated-hepatocarcinogenesis-histological-biochemical-and-molecular-features
#18
Guilherme Ribeiro Romualdo, Tony Fernando Grassi, Renata Leme Goto, Mariana Baptista Tablas, Lucas Tadeu Bidinotto, Ana Angélica Henrique Fernandes, Bruno Cogliati, Luís Fernando Barbisan
This study aimed the integrative characterization of morphological, biochemical and molecular features of chemically-induced cirrhosis-associated hepatocarcinogenesis. Thus, male Wistar rats were submitted to a diethylnitrosamine (DEN)/thioacetamide (TAA)-induced model. Liver tissue was processed for global gene expression, histopathological and collagen evaluations; as well as immunohistochemical and oxidative stress analysis. Gene Ontology and functional analysis showed the upregulation of extracellular matrix deposition genes, such as collagen type I alpha 1 and 2 (Col1α1 and Col1α2) and tissue inhibitor of metalloproteinase 1 and 2 genes (Timp1 and Timp2)...
November 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28932768/hepatic-adenomatosis-in-liver-cirrhosis
#19
Sonja Gordic, Swan N Thung, Sasan Roayaie, Mathilde Wagner, Bachir Taouli
Hepatocellular adenoma (HCA) is a benign liver tumor most frequently occurring in women using oral contraception. HCA develops in normal or nearly normal livers and is extremely rare in cirrhosis. The authors present magnetic resonance imaging and histopathologic findings in a 57-year-old man with liver cirrhosis and hepatic adenomatosis. As the differentiation between HCA and hepatocellular carcinoma (HCC) can be difficult with imaging, we would like to highlight the importance of ancillary findings such as the presence of iron on MRI, which can be observed in HCA...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/28922441/evaluation-of-2d-shear-wave-elastography-for-characterisation-of-focal-liver-lesions
#20
Ludmila Gerber, Daniel Fitting, Kajana Srikantharajah, Nina Weiler, Georgia Kyriakidou, Joerg Bojunga, Falko Schulze, Dimitra Bon, Stefan Zeuzem, Mireen Friedrich-Rust
BACKGROUND AND AIM: This is a prospective study for evaluation of 2D-shear wave elastography (2D-SWE) for characterisation and differentiation of benign und malignant focal liver lesions (FLLs). METHODS: The patients referred to our ultrasound unit were prospectively included. B-mode ultrasound and 2D-SWE (Aixplorer® France) were performed for one FLL in each patient. Liver histology and/or contrast-enhanced imaging were used as a reference method. RESULTS: 140 patients with FLL were included...
September 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
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