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intraepithelial neoplasm

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https://www.readbyqxmd.com/read/28213744/intraductal-papillary-neoplasm-originating-from-an-anomalous-bile-duct
#1
Harufumi Maki, Taku Aoki, Takeaki Ishizawa, Mariko Tanaka, Takashi Sakatani, Yoshifumi Beck, Kiyoshi Hasegawa, Yoshihiro Sakamoto, Norihiro Kokudo
An 82-year-old woman who had been suffering from repeated obstructive jaundice for 7 years was referred to our hospital. Although endoscopic aspiration of the mucin in the common bile duct had been temporally effective, origin of the mucin production had not been detectable. The patient thus had been forced to be on long-term follow-up without curative resection. Endoscopic retrograde cholangioscopy on admission revealed massive mucin in the common bile duct. In addition, an anomalous bile duct located proximal to the gallbladder was identified...
February 17, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28212672/cytokeratin7-and-cytokeratin19-expression-in-high-grade-cervical-intraepithelial-neoplasm-and-squamous-cell-carcinoma-and-their-possible-association-in-cervical-carcinogenesis
#2
Hojung Lee, Hyekyung Lee, Yong Kyun Cho
BACKGROUND: High risk human papillomavirus (HR HPV) infects cells at the squamocolumnar junction (SCJ) of the cervix, causing cancer. Cytokeratin (CK)7 is an SCJ marker, and stains cervical neoplasia. CK19 is a binding partner of CK7 and expressed in cervical cancer. Despite this possible association between CK7/CK19 and cervical cancer, not much is known about the mechanism of CK7/CK19 involvement in HR HPV-mediated cervical carcinogenesis. METHODS: We analyzed the expression pattern of CK7, CK19, and p16 by using immunohistochemistry and HPV infection by in situ hybridization in 25 cases of high grade cervical intraepithelial neoplasia (CIN3) and in 30 cases of squamous cell carcinoma (SCC)...
February 17, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28212564/s100a7-promotes-the-migration-invasion-and-metastasis-of-human-cervical-cancer-cells-through-epithelial-mesenchymal-transition
#3
Tian Tian, Xukun Li, Zhen Hua, Jianlin Ma, Xiaowei Wu, Zhihua Liu, Hongyan Chen, Zhumei Cui
S100A7 is an EF-hand calcium-binding protein that has been suggested to be implicated in cell proliferation, migration, invasion and tumor metastasis. However, its role in cervical cancer has not yet been fully clarified. The present study used immunohistochemistry analysis of S100A7 in clinical specimens of cervical cancer to show that S100A7 expression was significantly upregulated in cervical cancer tissues compared with normal cervical tissues and S100A7 expression in high grade cervical intraepithelial neoplasm (CIN) was significantly higher than cervical cancer...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28196020/the-prevalence-and-clinicopathological-characteristics-of-high-grade-pancreatic-intraepithelial-neoplasia-autopsy-study-evaluating-the-entire-pancreatic-parenchyma
#4
Yoko Matsuda, Toru Furukawa, Shinichi Yachida, Makoto Nishimura, Atsuko Seki, Keisuke Nonaka, Junko Aida, Kaiyo Takubo, Toshiyuki Ishiwata, Wataru Kimura, Tomio Arai, Mari Mino-Kenudson
OBJECTIVE: We sought to identify clinicopathological characteristics of high-grade pancreatic intraepithelial neoplasia (PanIN)/carcinoma in situ to facilitate screening for pancreatic ductal adenocarcinoma. METHODS: We evaluated PanIN lesions in 173 consecutive autopsy cases with no evidence of pancreatic ductal adenocarcinoma and/or intraductal papillary mucinous neoplasm (mean age, 80.5 years) by submitting the entire pancreas for microscopic examination. RESULTS: PanIN-3 was found in 4% of examined cases, whereas PanIN-1 and PanIN-2 were present in 77% and 28%, respectively...
February 14, 2017: Pancreas
https://www.readbyqxmd.com/read/28196015/genomic-characterization-of-low-and-high-grade-pancreatic-mucinous-cystic-neoplasms-reveals-recurrent-kras-alterations-in-high-risk-lesions
#5
James R Conner, Adrián Mariño-Enríquez, Mari Mino-Kenudson, Elizabeth Garcia, Martha B Pitman, Lynette M Sholl, Amitabh Srivastava, Leona A Doyle
OBJECTIVES: Pancreatic ductal adenocarcinoma arises from the following 3 distinct precursor lesions: pancreatic intraepithelial neoplasia, intraductal papillary mucinous neoplasm, and mucinous cystic neoplasm (MCN). Genetic abnormalities in the first 2 precursor lesions have been well characterized, but there are limited data on progression pathways in MCNs. This study aimed to characterize genomic differences between MCNs with low-grade (LG) and high-grade (HG) dysplasia or carcinoma...
February 14, 2017: Pancreas
https://www.readbyqxmd.com/read/28139862/the-pd-1-pd-l1-axis-may-be-aberrantly-activated-in-occupational-cholangiocarcinoma
#6
Yasunori Sato, Masahiko Kinoshita, Shigekazu Takemura, Shogo Tanaka, Genya Hamano, Shoji Nakamori, Masahiro Fujikawa, Yasuhiko Sugawara, Takatsugu Yamamoto, Akira Arimoto, Minako Yamamura, Motoko Sasaki, Kenichi Harada, Yasuni Nakanuma, Shoji Kubo
An outbreak of cholangiocarcinoma in a printing company was reported in Japan, and these cases were regarded as an occupational disease (occupational cholangiocarcinoma). This study examined the expression status of programmed death-1 (PD-1) and programmed death-ligand 1 (PD-L1) in occupational cholangiocarcinoma. Immunostaining of PD-1, PD-L1, CD3, CD8, and CD163 was performed using tissue sections of occupational cholangiocarcinoma (n = 10), and the results were compared with those of control cases consisting of intrahepatic (n = 23) and extrahepatic (n = 45) cholangiocarcinoma...
January 31, 2017: Pathology International
https://www.readbyqxmd.com/read/28109714/biliary-tumors-with-pancreatic-counterparts
#7
Yasuni Nakanuma, Yoshiko Sudo
Some biliary diseases mimic pancreatic diseases pathologically as well as pathogenetically. Such diseases can be called "biliary diseases with pancreatic counterparts". Biliary intraepithelial neoplasm (BilIN), intraductal papillary neoplasm of bile ducts (IPNB), hepatobiliary mucinous cystic neoplasm (hMCN), and IgG4-inflammatory pseudotumor represent the biliary counterparts of pancreatic intraepithelial neoplasm (PanIN), intraductal papillary mucinous neoplasm of pancreas (IPMN), pancreatic MCN, and mass forming type 1 autoimmune pancreatitis (AIP), respectively...
December 20, 2016: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28106106/serous-tubal-intraepithelial-neoplasia-the-concept-and-its-application
#8
REVIEW
Emily E K Meserve, Jan Brouwer, Christopher P Crum
In recent years it has become clear that many extra-uterine (pelvic) high-grade serous carcinomas (serous carcinomas) are preceded by a precursor lesion in the distal fallopian tube. Precursors range from small self-limited 'p53 signatures' to expansile serous tubal intraepithelial neoplasms that include both serous tubal epithelial proliferations (or lesions) of uncertain significance and serous tubal intraepithelial carcinomas. These precursors can be considered from three perspectives. The first is biologic underpinnings, which are multifactorial, and include the intersection of DNA damage with Tp53 mutations and disturbances in transcriptional regulation that increase with age...
January 20, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28104683/panin-neuroendocrine-cells-promote-tumorigenesis-via-neuronal-crosstalk
#9
Smrita Sinha, Ya-Yuan Fu, Adrien Grimont, Maren Ketcham, Kelly J Lafaro, Joseph A Saglimbeni, Gokce Askan, Jennifer M Bailey, Jerry P Melchor, Yi Zhong, Min Geol Joo, Olivera Grbovic-Huezo, In-Hong Yang, Olca Basturk, Lindsey Baker, Youngkyu Park, Robert C Kurtz, David A Tuveson, Steven D Leach, Pankaj Pasricha
Nerves are a notable feature of the tumor microenvironment in some epithelial tumors, but their role in the malignant progression of pancreatic ductal adenocarcinoma (PDAC) is uncertain. Here we identify dense innervation in the microenvironment of precancerous pancreatic lesions, known as pancreatic intraepithelial neoplasms (PanIN), and describe a unique subpopulation of neuroendocrine PanIN cells that express the neuropeptide substance P (SP) receptor Neurokinin 1-R (NK1-R). Using organoid culture, we demonstrated that sensory neurons promoted the proliferation of PanIN organoids via SP-NK1-R signaling and Stat3 activation...
January 19, 2017: Cancer Research
https://www.readbyqxmd.com/read/28100386/-effect-of-extracellular-signal-regulated-kinas-1-2-expression-and-hpv16-infection-and-their-interaction-in-progression-of-cervical-cancerization
#10
S L Fan, L Ding, Z Y Ren, X Chen, X S Sun, C C Li, C L Liu, W L Jia, Q L Li, J T Wang
Objective: To investigate the effect of ERK1/2 protein expression and HPV16 infection, as well as their interaction in the cervical carcinogenesis. Methods: A total of 176 patients, including 34 cases with normal cervix (NC), 26 cases with cervical intraepithelial neoplasm Ⅰ (CIN Ⅰ), 57 cases with cervical intraepithelial neoplasm Ⅱ/Ⅲ (CIN Ⅱ/Ⅲ) and 59 cases with cervical squamous cell carcinoma (SCC), were enrolled from Shanxi Tumor Hospital, Shanxi Maternal and Child Health Center, Jincheng Coal General Hospital from September 2013 to March 2014...
January 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28099704/high-risk-human-papillomavirus-infection-clearance-following-conization-among-patients-with-cervical-intraepithelial-neoplasm-grade-3-aged-at-least-45%C3%A2-years
#11
Guorui Zhang, Jinghe Lang, Keng Shen, Lan Zhu, Yang Xiang
OBJECTIVE: To investigate high-risk human papillomavirus (HPV) infection clearance rates following successful cold knife conization and factors predictive of HPV clearance among patients with cervical intraepithelial neoplasm grade 3. METHOD: The present retrospective study analyzed clinical data from patients aged at least 45 years with cervical intraepithelial neoplasm grade 3 who had undergone successful cold knife conization and attended regular follow-up at Peking Union Medical College Hospital, China, between January 1, 2002 and December 31, 2012...
January 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28060368/squamous-cell-carcinoma-of-the-upper-aerodigestive-tract-dysplasia-and-select-variants
#12
Bruce M Wenig
Upper aerodigestive tract (UADT) mucosal premalignant lesions include non-keratinizing and keratinizing intraepithelial dysplasia. The keratinizing type of intraepithelial dysplasia represents the majority of UADT dysplasias. Historically, grading of UADT dysplasias has followed a three tier system to include mild, moderate and severe dysplasia. Recent recommendations have introduced a two tier grading scheme to including low-grade (ie, mild dysplasia) and high-grade (moderate and severe dysplasia/carcinoma in situ) providing for better consensus among pathologists in the interpretation of such dysplastic lesions...
January 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28055239/the-evolving-role-of-pathology-in-new-developments-classification-terminology-and-diagnosis-of-pancreatobiliary-neoplasms
#13
Michelle D Reid, Melinda M Lewis, Field F Willingham, Volkan Adsay
Pancreatobiliary tract lesions are increasingly being discovered because of more sensitive imaging modalities. Magnetic resonance imaging has identified incidental pancreatic cysts in 13.5% of patients of progressively increasing age. Pancreatobiliary tissue is more accessible through endoscopic ultrasound and magnetic resonance imaging-guided biopsy procedures, and is now an integral part of pathologists' routine practice. Accordingly, several new tumor categories have been recently recognized, including intraductal tubulopapillary neoplasm, a new addition to tumoral intraepithelial neoplasms...
January 5, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28054715/tubal-origin-of-ovarian-cancer-the-double-edged-sword-of-haemoglobin
#14
Shiou-Fu Lin, Emily Gerry, Ie-Ming Shih
Ovarian high-grade serous carcinoma (HGSC) is the most malignant neoplasm of the gynaecologic tract. While the origins of many human malignant neoplasms are clear, the origin of HGSC remains poorly understood. This lack of knowledge limits our understanding of its pathogenesis and compromises efforts devoted to develop better early detection tools and effective preventative intervention. The tubal origin of HGSC has been put forward since the initial report of dysplastic lesions (now known as serous tubal intraepithelial carcinomas, or STICs) that morphologically resemble HGSC in the fallopian tube...
January 5, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28025670/ovarian-borderline-tumors-in-the-2014-who-classification-evolving-concepts-and-diagnostic-criteria
#15
REVIEW
Steffen Hauptmann, Katrin Friedrich, Raymond Redline, Stefanie Avril
Borderline ovarian tumors (BOT) are uncommon but not rare epithelial ovarian neoplasms, intermediate between benign and malignant categories. Since BOT were first identified >40 years ago, they have inspired controversies disproportionate to their incidence. This review discusses diagnostic criteria for the histologic subtypes of BOT, highlighting areas of diagnostic challenges, ongoing controversies, and changes in terminology implemented by the recent 2014 WHO Classification of Tumours of the Female Genital Organs...
February 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28009429/association-between-toll-like-receptor-and-tumor-necrosis-factor-immunological-pathways-in-uterine-cervical-neoplasms
#16
Lucas G G de Matos, Eduardo B Cândido, Paula V T Vidigal, Polyanna H C Bordoni, Rivia M Lamaita, Márcia M Carneiro, Agnaldo L da Silva-Filho
INTRODUCTION: The immune system plays a critical role in the defense against human papillomavirus (HPV) infection and its persistence. Toll-like receptors (TLRs) are membrane receptors responsible for activation of the innate immune response, and an association between TLR expression and uterine cervical cancer has been shown. Tumor necrosis factors (TNFs) are among the main mediators of skin and mucosa inflammation. The aim of this study was to demonstrate the association between TLR and TNF immune expression and cervical cancer and premalignant cervical lesions...
January 21, 2017: Tumori
https://www.readbyqxmd.com/read/27984121/an-s100p-positive-biliary-epithelial-field-is-a-pre-invasive-intraepithelial-neoplasm-in-nodular-sclerosing-cholangiocarcinoma
#17
Yasuni Nakanuma, Tsuneyuki Uchida, Yasunori Sato, Katsuhiko Uesaka
Nodular sclerosing cholangiocarcinoma (NS-CCA) is a common CCA of the intrahepatic large, perihilar and distal bile ducts. Intraepithelial biliary neoplasms, such as the mucosal extension of carcinoma and pre-invasive neoplastic lesions (i.e. biliary intraepithelial neoplasia [BilIN]) reportedly occur in the bile ducts around CCA. In the present study, we collectively refer to these intraepithelial lesions as "intraepithelial neoplasms of the bile duct (IENBs)". We examined the IENBs in 57 surgically resected cases of NS-CCA...
October 28, 2016: Human Pathology
https://www.readbyqxmd.com/read/27926360/pathology-of-pancreatic-cancer-precursor-lesions
#18
REVIEW
Michaël Noë, Lodewijk A A Brosens
To better understand pancreatic ductal adenocarcinoma (PDAC) and improve its prognosis, it is essential to understand its origins. This article describes the pathology of the 3 well-established pancreatic cancer precursor lesions: pancreatic intraepithelial neoplasia, intraductal papillary mucinous neoplasm, and mucinous cystic neoplasm. Each of these precursor lesions has unique clinical findings, gross and microscopic features, and molecular aberrations. This article focuses on histopathologic diagnostic criteria and reporting guidelines...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27896249/glycogen-synthase-kinase-3%C3%AE-and-cyclin-d1-expression-in-cervical-carcinogenesis
#19
Hyunsoo Park, Myunghwa Lee, Dae Woon Kim, Seo Yoo Hong, Hojung Lee
OBJECTIVE: Glycogen synthase kinase 3β (GSK3β) is a pluripotent protein kinase involved in the development of cancers through regulation of numerous oncogenic molecules. Cyclin D1, an important regulator of G1 to S phase transition in various cells, is one of target proteins that GSK3β regulate. Our objective was to assess the expression of GSK3β and cyclin D1 in cervical neoplasm of different histologic grades and to identify their correlation in cervical carcinogenesis. METHODS: Immunohistochemical analysis of GSK3β and cyclin D1 was performed in a total of 137 patients with 12 normal, 62 cervical intraepithelial neoplasia (CIN) (31 CIN1 and 31 CIN3) and 63 invasive cancers including 56 squamous cell carcinomas and 7 adenocarcinomas...
November 2016: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/27895406/simplified-criteria-for-diagnosing-superficial-esophageal-squamous-neoplasms-using-narrow-band-imaging-magnifying-endoscopy
#20
Akira Dobashi, Kenichi Goda, Noboru Yoshimura, Tomohiko R Ohya, Masayuki Kato, Kazuki Sumiyama, Masato Matsushima, Shinichi Hirooka, Masahiro Ikegami, Hisao Tajiri
AIM: To simplify the diagnostic criteria for superficial esophageal squamous cell carcinoma (SESCC) on Narrow Band Imaging combined with magnifying endoscopy (NBI-ME). METHODS: This study was based on the post-hoc analysis of a randomized controlled trial. We performed NBI-ME for 147 patients with present or a history of squamous cell carcinoma in the head and neck, or esophagus between January 2009 and June 2011. Two expert endoscopists detected 89 lesions that were suspicious for SESCC lesions, which had been prospectively evaluated for the following 6 NBI-ME findings in real time: "intervascular background coloration"; "proliferation of intrapapillary capillary loops (IPCL)"; and "dilation", "tortuosity", "change in caliber", and "various shapes (VS)" of IPCLs (i...
November 7, 2016: World Journal of Gastroenterology: WJG
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