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Hepatocellular adenoma

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https://www.readbyqxmd.com/read/28092230/octamethylcyclotetrasiloxane-d4
#1
(no author information available yet)
Octamethylcyclotetrasiloxane (D4; CAS No. 556-67-2) is used as a monomer in the manufacture of polymeric materials, which are widely used in various industrial and/or medical applications, such as breast implants. D4 has a relatively low order of toxicity following acute administration via the oral, dermal, and inhalation routes of exposure and is not considered to be a dermal or eye irritant or to be a dermal sensitizer. There is no appreciable dermal absorption of D4 based on results from in vivo and in vitro studies...
January 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/28092229/decamethylcyclopentasiloxane-d5
#2
(no author information available yet)
Decamethylcyclopentasiloxane (D5; CAS No. 541-02-6) is a precursor in the production of siloxane polymers for industry and medicine and is a carrier ingredient in many toiletries and cosmetics. D5 has a relatively low order of toxicity following acute administration via the oral, dermal, and inhalation routes of exposure. It is not considered to be a dermal or eye irritant or a dermal sensitizer. There is no appreciable dermal absorption of D5 based on results from in vivo and in vitro studies. It has not been shown to be genotoxic/mutagenic when tested in a number of short-term in vitro and in vivo assays and did not cause reproductive or developmental toxicity in rats...
January 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/28087475/immunohistochemical-approach-for-the-diagnosis-of-a-liver-mass-on-small-biopsy-specimens
#3
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
https://www.readbyqxmd.com/read/28049244/false-positive-diagnosis-of-hepatocellular-carcinoma-in-liver-resection-patients
#4
Hongeun Lee, Jeong Hee Yoon, Hyeyoung Kim, Nam Joon Yi, Suk Kyun Hong, Kyung Chul Yoon, Hyo Sin Kim, Sung Woo Ahn, Jin Young Choi, Youngrok Choi, Hae Won Lee, Ju Yeon Yi, Kyoung Bun Lee, Kwang Woong Lee, Kyung Suk Suh
The diagnosis of hepatocellular carcinoma (HCC) is based on imaging studies particularly in high-risk patients without histologic confirmation. This study evaluated the prevalence and characteristics of false-positively diagnosed HCC in a liver resection cohort for HCC. A retrospective review was performed of 837 liver resection cases for clinically diagnosed HCC between 2005 and 2010 at our institute. High-risk patients with tumors > 1 cm with one or two image findings consistent with HCC and tumors < 1 cm with two or more image findings consistent with HCC with persistently increased serum alpha-fetoprotein (AFP) levels above the normal range with underlying inhibited hepatitis activity underwent liver resection...
February 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28012864/germline-and-somatic-dicer1-mutations-in-familial-and-sporadic-liver-tumors
#5
Stefano Caruso, Julien Calderaro, Eric Letouzé, Jean-Charles Nault, Gabrielle Couchy, Anais Boulais, Alain Luciani, Elie-Serge Zafrani, Paulette Bioulac-Sage, Olivier Seror, Sandrine Imbeaud, Jessica Zucman-Rossi
BACKGROUND & AIMS: Growing evidence suggests that genetic predisposition significantly increases the risk of hepatocellular carcinoma (HCC), independently from the presence of other risk factors. Here, we report a novel germline DICER1 mutation associated with familial recurrent liver tumors. Next, we aimed to investigate the contribution of constitutional and somatic DICER1 mutations on HCC occurrence. METHODS: We investigated two individuals of a family that developed recurrent well-differentiated hepatocellular tumors over the years...
December 21, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27993534/assessment-of-the-link-between-quantitative-biexponential-diffusion-weighted-imaging-and-contrast-enhanced-mri-in-the-liver
#6
Hildebrand Dijkstra, Matthijs Oudkerk, Peter Kappert, Paul E Sijens
PURPOSE: To investigate if intravoxel incoherent motion (IVIM) modeled diffusion-weighted imaging (DWI) can be linked to contrast-enhanced (CE-)MRI in liver parenchyma and liver lesions. METHODS: Twenty-five patients underwent IVIM-DWI followed by multiphase CE-MRI using Gd-EOB-DTPA (n=20) or Gd-DOTA (n=5) concluded with IVIM-DWI. Diffusion (Dslow), microperfusion (Dfast), its fraction (ffast), wash-in-rate (Rearly) and late-enhancement-rate (Rlate) of Gd-EOB-DTPA were calculated voxel-wise for the liver...
December 18, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27989788/distinction-between-inflammatory-hepatocellular-adenoma-and-mass-effect-on-liver-sampling
#7
Diana Agostini-Vulaj, Ashwani K Sharma, Jennifer J Findeis-Hosey, Loralee A McMahon, Raul S Gonzalez
Inflammatory hepatocellular adenoma (IHA) is characterized by sinusoidal dilation, inflammation, and bile ductular reaction. However, these changes can also be seen in non-neoplastic liver tissue adjacent to a mass lesion. This differential may arise in biopsy tissue attempting to sample a liver mass. Serum amyloid A (SAA) immunostaining is useful for the diagnosis of IHA but is not entirely specific. Additionally, the histologic pattern of mass effect (ME) has received little formal scrutiny. We compared the clinical, morphologic, and immunohistochemical findings in 18 IHA and 36 livers with ME...
December 15, 2016: Human Pathology
https://www.readbyqxmd.com/read/27988517/malignant-transformation-of-hepatocellular-adenoma
#8
Wing Yee Kwok, Satoru Hagiwara, Naoshi Nishida, Tomohiro Watanabe, Toshiharu Sakurai, Hiroshi Ida, Yasunori Minami, Masahiro Takita, Tomohiro Minami, Mina Iwanishi, Hirokazu Chishina, Masashi Kono, Kazuomi Ueshima, Yoriaki Komeda, Tadaaki Arizumi, Eisuke Enoki, Takuya Nakai, Tsutomu Kumabe, Osamu Nakashima, Fukuo Kondo, Masatoshi Kudo
The patient was a 20-year-old male in whom a hepatic hypervascular mass accompanied by intratumoral hemorrhage was detected on examination for epigastric pain. Based on the enlargement of the mass and diagnostic imaging, hepatocellular adenoma (HCA) was suspected and hepatectomy was performed. The lesion was diagnosed as malignant transformation of β-catenin-activated HCA. There are only few reports of cases with malignant transformation of HCA in Japan; it is necessary to accumulate cases to investigate it...
December 17, 2016: Oncology
https://www.readbyqxmd.com/read/27986170/imaging-of-hepatic-focal-nodular-hyperplasia-pictorial-review-and-diagnostic-strategy
#9
Marco Dioguardi Burgio, Maxime Ronot, Giuseppe Salvaggio, Valérie Vilgrain, Giuseppe Brancatelli
Focal nodular hyperplasia (FNH) is the second most common benign solid liver lesion after hemangioma, occurring more frequently in young women. The prime differential diagnoses include hepatocellular adenoma, hepatocellular carcinoma, and hypervascular metastasis. As the management of FNH is typically conservative, imaging plays a key role in diagnostic pathway, and misdiagnosis may have a major clinical effect. In this article, we describe the ultrasound, computed tomography, and magnetic resonance imaging features of FNH, underlining the importance of typical radiological features that allow a specific noninvasive diagnosis...
December 2016: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/27984126/malignant-transformation-of-a-b-catenin-inflammatory-adenoma-due-to-a-s45-%C3%A3-catenin-activating-mutation-present-12-years-before
#10
Christine Sempoux, Bettina Bisig, Gabrielle Couchy, Charles Balabaud, Jessica Zucman-Rossi, Paulette Bioulac-Sage
In 1984, a 24-year-old woman underwent a right hepatectomy following a 17 cm nodule, diagnosed as a hepatocellular adenoma with some atypia. The resection was incomplete. Follow-up was interrupted. In 1996, a computed tomography scan revealed a large multifocal hepatocellular carcinoma (HCC) confirmed on biopsies. The patient died the same year. We reviewed these nodules using immunohistochemistry and gene sequencing. CRP was overexpressed in the tumor resected in 1984. Glutamine synthetase (GS) was heterogeneous in the tumor with few tumor nuclei expressing ß-catenin...
October 28, 2016: Human Pathology
https://www.readbyqxmd.com/read/27956811/spontaneous-rupture-of-hepatic-metastasis-from-a-thymoma-a-case-report
#11
Ho Jae Kim, Yong Eun Park, Min Seo Ki, Se Ju Lee, Seung Hun Beom, Dai Hoon Han, Young Nyun Park, Jun Yong Park
Bleeding resulting from spontaneous rupture of the liver is an infrequent but potentially life threatening complication that may be associated with an underlying liver disease. A hepatocellular carcinoma or hepatic adenoma is frequently reported is such cases. However, hemoperitoneum resulting from a hepatic metastatic thymoma is extremely rare. Here, we present a case of a 62-year-old man with hypovolemic shock induced by ruptured hepatic metastasis from a thymoma. At the first hospital admission, the patient had a 45-mm anterior mediastinal mass that was eventually diagnosed as a type A thymoma...
November 28, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27939373/molecular-classification-of-hepatocellular-adenoma-associates-with-risk-factors-bleeding-and-malignant-transformation
#12
Jean Charles Nault, Gabrielle Couchy, Charles Balabaud, Guillaume Morcrette, Stefano Caruso, Jean-Frederic Blanc, Yannick Bacq, Julien Calderaro, Valérie Paradis, Jeanne Ramos, Jean-Yves Scoazec, Viviane Gnemmi, Nathalie Sturm, Catherine Guettier, Monique Fabre, Eric Savier, Laurence Chiche, Philippe Labrune, Janick Selves, Dominique Wendum, Camilla Pilati, Alexis Laurent, Anne De Muret, Brigitte Le Bail, Sandra Rebouissou, Sandrine Imbeaud, Paulette Bioulac-Sage, Eric Letouzé, Jessica Zucman-Rossi
BACKGROUND & AIMS: Hepatocellular adenomas (HCA) are benign liver tumors that can be assigned to molecular subtypes based on inactivating mutations in HNF1A, activating mutations in β-catenin, or activation of inflammatory signaling pathways. We aimed to update the classification system for HCA and associate the subtypes with disease risk factors and complications. METHODS: We analyzed expression levels of 20 genes and sequenced exon regions of 8 genes (HNF1A, IL6ST, CTNNB1, FRK, STAT3, GNAS, JAK1, and TERT) in 607 samples of 533 HCAs from 411 patients, collected from 28 centers mainly in France from 2000 and 2014...
December 7, 2016: Gastroenterology
https://www.readbyqxmd.com/read/27914986/identification-of-epigenetically-downregulated-tmem70-and-ube2e2-in-rat-liver-after-28-day-treatment-with-hepatocarcinogenic-thioacetamide-showing-gene-product-downregulation-in-hepatocellular-preneoplastic-and-neoplastic-lesions-produced-by-tumor-promotion
#13
Sayaka Mizukami, Atsunori Yafune, Yousuke Watanabe, Kota Nakajima, Meilan Jin, Toshinori Yoshida, Makoto Shibutani
The present study identified genes showing promoter region hypermethylation by CpG island microarrays in the liver of rats treated with hepatocarcinogen thioacetamide (TAA) for 28days. Among 47 hypermethylated genes, Hist1h2aa, Tmem70, Ube2e2, and Slk were confirmed to show hypermethylation by methylation-specific quantitative polymerase chain reaction (PCR) and pyrosequencing analyses as well as downregulation of transcript levels by real-time reverse transcription-PCR analysis in the livers of rats treated with TAA...
January 15, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/27903597/impact-of-organic-cation-transporters-oct-slc22a-on-differential-diagnosis-of-intrahepatic-lesions
#14
Michele Visentin, Belle V van Rosmalen, Christian Hiller, Matthanja Bieze, Lia Hofstetter, Joanne Verheij, Gerd A Kullak-Ublick, Hermann Koepsell, Saffire Sks Phoa, Ikumi Tamai, Roelof J Bennink, Thomas M van Gulik, Bruno Stieger
Positron emission tomography (PET) using the cationic compound [(18)F]fluoromethylcholine (FCH) enhances the sensitivity for non-invasive classification of hepatic tumours due to peculiar patterns of accumulation. The underlying transporters are not known. We aim to identify the carriers mediating uptake of FCH in liver and to correlate their expression pattern with PET intrahepatic signal distribution to clarify the role of membrane transporters in FCH accumulation. FCH transport was characterized in cells overexpressing organic cation transporters (OCTs)...
November 30, 2016: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/27900094/malignant-transformation-of-hepatocellular-adenoma-with-bone-marrow-metaplasia-arising-in-glycogen-storage-disease-type-i-a-case-report
#15
Tomohiro Iguchi, Motoyuki Yamagata, Takashi Sonoda, Kimihiko Yanagita, Tetsuhiro Fukahori, Eiji Tsujita, Shinichi Aishima, Yoshinao Oda, Yoshihiko Maehara
Malignant transformation of hepatocellular adenoma (HA) is relatively rare and has been reported to be associated with dysregulation of the β-catenin pathway. The presence of bone marrow metaplasia in HA is an uncommon histological characteristic. The current report presents the case of a 46-year-old woman with glycogen storage disease type I (von Gierke's disease) who underwent resection of hepatocellular carcinoma (HCC) arising in a HA with associated bone marrow metaplasia producing three series of hematopoietic cells...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27861172/liver-subcapsular-hematoma-a-rare-cause-of-sudden-unexpected-death
#16
Dorra Oualha, Abir Aissaoui, Meriam Belhaj, Mohamed Amin Mesrati, Adnene Moussa, Nidhal Haj Salem, Abdelfateh Zakhama, Ali Chadly
The spontaneous subcapsular hematoma of the liver is very rare. There are only a few reported cases in the literature.Most reported cases of liver hematoma often occur during pregnancy as part of the hemolysis, elevated liver enzymes, and low platelet count syndrome. The other causes may be due to amylosis, rupture of hepatocellular carcinoma, adenoma, focal nodular hyperplasia, hemorrhagic cyst, or hemopathy. Idiopathic spontaneous subscapular hematoma is a rare and often fatal condition.We report a case of a 43-year-old woman having Steinert disease who died because of a fatal spontaneous liver hemorrhage occurring without any traumatism...
November 17, 2016: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/27859748/use-of-serum-micrornas-as-biomarker-for-hepatobiliary-diseases-in-dogs
#17
K Dirksen, T Verzijl, G C Grinwis, R P Favier, L C Penning, I A Burgener, L J van der Laan, H Fieten, B Spee
BACKGROUND: Current biochemical indicators cannot discriminate between parenchymal, biliary, vascular, and neoplastic hepatobiliary diseases. MicroRNAs are promising new biomarkers for hepatobiliary disease in humans and dogs. OBJECTIVE: To measure serum concentrations of an established group of microRNAs in dogs and to investigate their concentrations in various types of hepatobiliary diseases. ANIMALS: Forty-six client-owned dogs with an established diagnosis of hepatobiliary disease and stored serum samples and eleven client-owned healthy control Labrador Retrievers...
November 2016: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/27803743/hepatocellular-adenoma-when-and-how-to-treat-update-of-current-evidence
#18
REVIEW
Maarten G Thomeer, Mirelle Broker, Joanne Verheij, Michael Doukas, Turkan Terkivatan, Diederick Bijdevaate, Robert A De Man, Adriaan Moelker, Jan N IJzermans
Hepatocellular adenoma (HCA) is a rare, benign liver tumor. Discovery of this tumor is usually as an incidental finding, correlated with the use of oral contraceptives, or pregnancy. Treatment options have focused on conservative management for the straightforward, smaller lesions (<5 cm), with resection preferred for larger lesions (>5 cm) that pose a greater risk of hemorrhage or malignant progression. In recent years, a new molecular subclassification of HCA has been proposed, associated with characteristic morphological features and loss or increased expression of immunohistochemical markers...
November 2016: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/27781382/hepatocellular-adenoma-among-adult-survivors-of-childhood-and-young-adult-cancer
#19
Emily S Tonorezos, Dana Barnea, Ghassan K Abou-Alfa, Jacqueline Bromberg, Michael D'Angelica, Charles A Sklar, Jinru Shia, Kevin C Oeffinger
Hepatocellular adenoma (HCA) is a rare benign epithelial neoplasm with potential for hemorrhage, rupture, or malignant transformation. Reported annual incidence of HCA is approximately 1/1,000,000. We identified 12 cases of HCA among adults with a history of childhood or young adult cancer. The most common cancer diagnosis was leukemia (N = 4). Five had undergone allogeneic hematopoietic stem cell transplant with total body irradiation. All 11 females had prior estrogen therapy; the male case was hypogonadal...
October 26, 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/27780309/incidental-inflammatory-adenoma-with-%C3%AE-catenin-activation-in-the-setting-of-paediatric-nash
#20
S Oliveira, A K Samba, A J Towbin, A Gupta, J I Geller, J D Nathan, R Kohli
: Hepatocellular adenomas (HCA) are benign tumours with potential for malignant transformation with no recommendations regarding management in the paediatric population. We report a case of an inflammatory adenoma with β-catenin activated pathway in an obese, paediatric patient with nonalcoholic steatohepatitis (NASH). CASE REPORT: An 11-year-old female presented with a microlobulated liver lesion measuring >5 cm in magnetic resonance imaging (MRI) with inflammatory adenoma with β-catenin activated pathology arising in a background of NASH, nonalcoholic fatty liver disease (NAFLD) activity score 5/8...
October 25, 2016: Pediatric Obesity
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