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https://www.readbyqxmd.com/read/28644145/colorectal-carcinoma-with-osseous-metaplasia
#1
Xibo Liu, Jinghong Xu, Lirong Chen
Osseous metaplasia (OM) is rarely observed in colorectal cancer (incidence < 0.4% in rectal cancer), where it has a non-specific clinical presentation and unknown pathogenesis. Here, we report three cases of colorectal carcinoma with OM and propose a new hypothesis. All three patients (two males and one female) were Chinese and had different sites of colorectal carcinoma with OM: rectum, sigmoid colon, and appendix. The pathologic diagnoses were serrated adenocarcinoma; moderately to poorly differentiated adenocarcinoma with micropapillary carcinoma and cribriform comedo-type adenocarcinoma; and mucinous adenocarcinoma, respectively...
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28643319/-progress-of-the-application-of-optical-coherence-tomography-in-gastrointestinal-tumor-surgery
#2
Yongsheng Li, Hao Liu, Haipeng Huang, Yu Zhu, Haijun Deng, Jiang Yu, Site Luo, Li Huo, Li Lin, Huikai Xie, Guoxin Li
Optical coherence tomography (OCT) is a real-time, cross-sectional optical imaging technology. It is analogous to ultrasonography, except that OCT uses light waves instead of sound waves, and can provide three-dimensional morphological images of living tissues with a micrometer resolution. Through the use of endoscopes, needles, catheters and laparoscopes, OCT has demonstrated tremendous imaging potential in tumor surgery. The current studies suggest that OCT has potential for clinical applications in the following fields of gastrointestinal tumor surgery: (1) Early tumor detection and diagnosis: OCT can distinguish differences between polyp tissue, normal tissue and malignant tissue...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28642451/il-10-plays-a-pivotal-role-in-tamoxifen-induced-spasmolytic-polypeptide-expressing-metaplasia-in-gastric-mucosa
#3
Chansu Lee, Hyuk Lee, Seo Yun Hwang, Chang Mo Moon, Sung Noh Hong
Background/Aims: Gastric cancer evolves in the pathologic mucosal milieu, and its development is characterized by both the loss of acid-secreting parietal cells and mucosal cell metaplasia, called spasmolytic polypeptide-expressing metaplasia (SPEM). Cytokines, such as interleukin (IL)-10, IL-1β, and IL-6, play a key role in gastric carcinogenesis. However, changes in the cytokine profile of SPEM have not been evaluated. Methods: To induce SPEM in mouse stomachs, C57BL/6 mice were intraperitoneally injected with tamoxifen and sacrificed at 3, 10, and 21 days after treatment...
June 26, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28639968/defining-the-cervical-transformation-zone-and-squamocolumnar-junction-can-we-reach-a-common-colposcopic-and-histologic-definition
#4
Olaf Reich, Sigrid Regauer, W G McCluggage, Christine Bergeron, Charles Redman
Quality assurance and research in colposcopy and cervical pathology require standardized terminologies and reporting. However, clinical and histologic definitions of the cervical transformation zone (TZ) and squamocolumnar junction (SCJ) vary considerably. We aimed to identify areas of agreement and areas where work is required to standardize the definitions of the TZ and the SCJ. We conducted a survey among the board members of the European Federation of Colposcopy member societies and members of the International Society of Gynecological Pathologists...
June 20, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28639695/glycogen-synthase-kinase-3%C3%AE-ablation-limits-pancreatitis-induced-acinar-to-ductal-metaplasia
#5
Li Ding, Geou-Yarh Liou, Daniel M Schmitt, Peter Storz, Jin-San Zhang, Daniel D Billadeau
Acinar-to-ductal metaplasia (ADM) is a reversible epithelial trans-differentiation process that occurs in the pancreas in response to acute inflammation. ADM can rapidly progress toward pre-malignant pancreatic intraepithelial neoplasia (PanIN) lesions in the presence of mutant KRas and ultimately pancreatic adenocarcinoma (PDAC). In the present work we elucidate the role and related mechanism of glycogen synthase kinase-3beta (GSK-3β) in ADM development using in vitro 3D cultures and genetically engineered mouse models...
June 22, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28638837/validation-of-a-novel-immunoline-assay-for-patient-stratification-according-to-virulence-of-the-infecting-helicobacter-pylori-strain-and-eradication-status
#6
Luca Formichella, Laura Romberg, Hannelore Meyer, Christian Bolz, Michael Vieth, Michael Geppert, Gereon Göttner, Christina Nölting, Wolfgang Schepp, Arne Schneider, Kurt Ulm, Petra Wolf, Ingrid Lisanne Holster, Ernst J Kuipers, Bernd Birkner, Erwin Soutschek, Markus Gerhard
Helicobacter pylori infection shows a worldwide prevalence of around 50%. However, only a minority of infected individuals develop clinical symptoms or diseases. The presence of H. pylori virulence factors, such as CagA and VacA, has been associated with disease development, but assessment of virulence factor presence requires gastric biopsies. Here, we evaluate the H. pylori recomLine test for risk stratification of infected patients by comparing the test score and immune recognition of type I or type II strains defined by the virulence factors CagA, VacA, GroEL, UreA, HcpC, and gGT with patient's disease status according to histology...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28631647/intrahepatic-biliary-cystadenoma-with-ciliary-metaplasia-report-of-a-rare-morphological-variant
#7
Gaurav Khanna, Pragya Sharma, K S Madhusudhan, Adarsh Barwad, Piyush Ranjan, Biplab Mishra, Prasenjit Das
Histological diagnosis of biliary cystadenoma is based on the type of epithelial cells lining the cyst and radiological features. The cyst-lining cells are not usually ciliated. We herein report a very rare example of an intrahepatic biliary cystadenoma with ciliated epithelial lining, which had taken us away from this diagnosis toward an intrahepatic foregut duplication cyst. Radiologically, also the lesion was deceptive, and a possibility of hydatid cyst was considered. However, immunohistochemical workup finally led us to this diagnosis...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28626025/intranasal-administration-of-mesenchymoangioblast-derived-mesenchymal-stem-cells-abrogates-airway-fibrosis-and-airway-hyperresponsiveness-associated-with-chronic-allergic-airways-disease
#8
Simon G Royce, Siddharth Rele, Brad R S Broughton, Kilian Kelly, Chrishan S Samuel
Structural changes known as airway remodeling (AWR) characterize chronic/severe asthma and contribute to lung dysfunction. Thus, we assessed the in vivo efficacy of induced pluripotent stem cell and mesenchymoangioblast-derived mesenchymal stem cells (MCA-MSCs) on AWR in a murine model of chronic allergic airways disease (AAD)/asthma. Female Balb/c mice were subjected to a 9-wk model of ovalbumin (OVA)-induced chronic AAD and treated intravenously or intranasally with MCA-MSCs from weeks 9 to11. Changes in airway inflammation (AI), AWR, and airway hyperresponsiveness (AHR) were assessed...
June 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28623687/microcalcifications-in-stone-obstructed-human-submandibular-gland-are-associated-with-apoptosis-and-cell-proliferation
#9
Ivan Lau, Ajay Potluri, Cliff-Lawrence Ibeh, Robert S Redman, Edina Paal, Bidhan C Bandyopadhyay
OBJECTIVE: Human submandibular gland (SMG) stones are associated with inflammation, fibrosis and microcalcifications in the surrounding tissues. However, there is little information about the accompanying cell injury-repair process, apoptosis, and cell proliferation. The purpose of this study was to investigate such an association and its clinical significance. DESIGN OF STUDY: Mid-gland paraffin sections of human SMGs ("stone glands") and normal SMGs ("non-stone glands") were subjected to stains for general histology (hematoxylin and eosin), fibrosis (Masson's trichrome), and calcification (alizarin red) and to immunohistochemistry for proliferative activity (Ki-67), and apoptosis (Caspase-3)...
June 7, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28622182/reflux-associated-cholecystopathy-analysis-of-76-gallbladders-from-patients-with-supra-oddi-union-of-the-pancreatic-duct-and-common-bile-duct-pancreatobiliary-maljunction-elucidates-a-specific-diagnostic-pattern-of-mucosal-hyperplasia-as-a-prelude-to-carcinoma
#10
Takashi Muraki, Bahar Memis, Michelle D Reid, Takeshi Uehara, Tetsuya Ito, Osamu Hasebe, Shinji Okaniwa, Naoto Horigome, Takeshi Hisa, Pardeep Mittal, Alexa Freedman, Shishir Maithel, Juan M Sarmiento, Alyssa Krasinskas, Jill Koshiol, Volkan Adsay
Pancreaticobiliary maljunction (PBM) is the anomalous union of the main pancreatic duct and common bile duct outside the Oddi-sphincter, allowing the reflux of pancreatic juice to the gallbladder. There is only limited awareness and understanding of the pathologic correlates of this condition, mostly from Japan; this entity is largely unrecognized in the West. In this study, 76 gallbladders from patients with PBM (64 from Japan; 12 from the United States) were analyzed and contrasted with 66 from non-PBM patients...
June 15, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28620964/does-gene-expression-in-laryngeal-sub-sites-differ-between-patients-with-laryngopharyngeal-reflux-and-controls
#11
John M Wood, Damian J Hussey, Charmaine M Woods, David Astill, David I Watson, Bernard Lee, A Simon Carney
OBJECTIVE: to identify laryngeal mRNA gene changes in patients with laryngopharyngeal reflux (LPR). METHOD: Laryngeal biopsies from non-smoking LPR patients (n=10; Reflux Symptom Index (RSI) >12 and a Reflux Finding Score (RFS) >6) and controls (n=9; RSI <12 and RFS <6) were collected from 4 sub-sites (true vocal cord, false vocal cord, medial arytenoid, posterior commissure) of the larynx. qRT-PCR analyses were conducted on 20 reflux and inflammation related genes, including interleukin 6 and 8, cytokeratin 8 and 14, mucin genes MUC 1, 2, 3B, 4, 5B, 6 & 7, and carbonic anhydrase III...
June 16, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28620752/fatty-metaplasia-quantification-and-impact-on-regional-myocardial-function-as-assessed-by-advanced-cardiac-mr-imaging
#12
Tomas Lapinskas, Bernhard Schnackenburg, Marc Kouwenhoven, Rolf Gebker, Alexander Berger, Remigijus Zaliunas, Burkert Pieske, Sebastian Kelle
OBJECTIVE: This study aimed to investigate the advantages of recently developed cardiac imaging techniques of fat-water separation and feature tracking to characterize better individuals with chronic myocardial infarction (MI). MATERIALS AND METHODS: Twenty patients who had a previous MI underwent CMR imaging. The study protocol included routine cine and late gadolinium enhancement (LGE) technique. In addition, mDixon LGE imaging was performed in every patient. Left ventricular (LV) circumferential (EccLV) and radial (ErrLV) strain were calculated using dedicated software (CMR(42), Circle, Calgary, Canada)...
June 15, 2017: Magma
https://www.readbyqxmd.com/read/28614213/pathologic-separation-of-chronic-hypersensitivity-pneumonitis-from-fibrotic-connective-tissue-disease-associated-interstitial-lung-disease
#13
Andrew Churg, Joanne L Wright, Christopher J Ryerson
Chronic (fibrotic) hypersensitivity pneumonitis (HP) and fibrosing interstitial pneumonias associated with connective tissue disease (CTD-ILD) can be difficult to distinguish in biopsy specimens. To investigate features that might separate these entities, 2 pathologists blinded to the diagnoses reviewed 16 cases of chronic HP and 12 cases of CTD-ILD. Fifteen predefined parameters were examined by morphometric point counting, analysis/cm of lung tissue, or presence/absence. Germinal centers were present in a minority of patients, but favored a diagnosis of CTD-ILD (7/12 CTD vs...
June 13, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28614205/spectrum-of-changes-in-anogenital-mammary-like-glands-in-primary-extramammary-anogenital-paget-disease-and-their-possible-role-in-the-pathogenesis-of-the-disease
#14
Anastasia M Konstantinova, Dominic V Spagnolo, Colin J R Stewart, Denisa Kacerovska, Ksenya V Shelekhova, Jose A Plaza, Saul Suster, Jiri Bouda, Liubov Kyrpychova, Michal Michal, Irena E Belousova, Katrin Kerl, Dmitry V Kazakov
To determine whether a subset of primary extramammary Paget disease (EMPD) may originate in anogenital mammary-like glands (AGMLG), the authors studied 181 specimens of EMPD, detailing alterations in AGMLG. The latter were identified in 33 specimens from 31 patients. All patients were women, ranging in age from 38 to 93 years (median, 65 y). In all cases, lesions involved the vulva and in 1 patient the perianal skin was affected. Histopathologically, AGMLG manifested changes identical to columnar cell change (CCC) (87...
June 13, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28611525/clinical-significance-of-expression-of-proliferating-cell-nuclear-antigen-and-e-cadherin-in-gastric-carcinoma
#15
Lin Hu, Hong-Lang Li, Wei-Feng Li, Jun-Min Chen, Jian-Tao Yang, Jun-Jing Gu, Lin Xin
AIM: to investigate the expression of proliferating cell nuclear antigen (PCNA) and E-cadherin in gastric carcinoma and to analyze their clinical significance. METHODS: A total of 146 patients were selected for this study, including 38 patients with intestinal metaplasia, 42 with dysplasia, and 66 with primary gastric cancer. In addition, 40 patients with normal gastric tissues were selected as controls. The expression of PCNA and E-cadherin was detected by immunohistochemistry...
May 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28608929/high-grade-serous-carcinomas-arise-in-the-mouse-oviduct-via-defects-linked-to-the-human-disease
#16
Yali Zhai, Rong Wu, Rork Kuick, Michael S Sessine, Stephanie Schulman, Megan Green, Eric R Fearon, Kathleen R Cho
Recent studies suggest that the most common and lethal type of "ovarian" cancer, high-grade serous carcinoma (HGSC), usually arises from epithelium on the fallopian tube fimbriae, and not from the ovarian surface epithelium (OSE). We have developed Ovgp1-iCreER(T2) mice in which the Ovgp1 promoter controls expression of tamoxifen (TAM)-regulated Cre recombinase in oviductal epithelium - the murine equivalent of human fallopian tube epithelium (FTE). We employed Ovgp1-iCreER(T2) mice to show that FTE-specific inactivation of several different combinations of tumour suppressor genes recurrently mutated in human HGSCs - namely Brca1, Trp53, Rb1, and Nf1 - results in serous tubal intraepithelial carcinomas (STICs) that progress to HGSC or carcinosarcoma, and to widely metastatic disease in a subset of mice...
June 13, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28606791/chondrolipoma-of-the-ankle-in-a-child-a-case-report
#17
Takuya Ishibashi, Jun Nishio, Shunsuke Kobayashi, Kei Shiramizu, Takuaki Yamamoto
Chondrolipoma is an extremely rare variant of lipoma with cartilaginous metaplasia. The presence of nonlipomatous components can lead to a variety of entities in the differential diagnosis from the radiologic findings. We describe an unusual case of a chondrolipoma occurring in the right ankle of a 9-year-old female. Physical examination showed a 3.5-cm, elastic-hard, poorly mobile, nontender mass adherent to the Achilles tendon. Plain radiographs revealed a faintly calcified soft tissue mass without bone involvement...
June 9, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28603573/extra-articular-tenosynovial-chondromatosis-of-the-finger-a-case-series-study-of-three-cases-one-including-excessive-osseous-invasion
#18
Akio Sakamoto, Takahiko Naka, Eisuke Shiba, Masanori Hisaoka, Shuichi Matsuda
BACKGROUND: Synovial chondromatosis is characterized by cartilaginous metaplasia in synovial tissues. Extra-articular tenosynovial chondromatosis is considered to be an anatomical counterpart of articular synovial chondromatosis. Extra-articular tenosynovial chondromatosis occurs preferentially in the hand, although its frequency is low. RESULTS: We report three cases of extra-articular tenosynovial chondromatosis. A 65-year-old female presented with a history of symptoms over 40 years related to the dorsum of her index finger (Case 1), A 46-year-old female presented with a 6-month history of symptoms at the volar surface of her middle finger (Case 2), and a 66-year-old male presented with a 3-month history of symptoms in a dorsal ring finger...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28602547/non-invasive-objective-and-contemporary-methods-for-measuring-ocular-surface-inflammation-in-soft-contact-lens-wearers-a-review
#19
REVIEW
Cecilia Chao, Kathryn Richdale, Isabelle Jalbert, Kim Doung, Moneisha Gokhale
Contact lens wear is one of the primary risk factors for the development of ocular surface inflammatory events. The purpose of this review is to examine and summarize existing knowledge on the mechanisms of contact lens related ocular surface inflammation and the evidence for the effectiveness of current objective methods to measure ocular surface inflammation. Contact lens wear is postulated to trigger an inflammatory response on the ocular surface due to mechanical, chemical, hypoxic stress, or by the introduction of microbes and their toxins...
June 8, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28601658/thyroid-like-low-grade-nasopharyngeal-papillary-adenocarcinoma-with-squamous-differentiation-a-novel-histological-finding
#20
Takashi Oide, Osamu Kadosono, Jun Matsushima, Di Wu, Hiroaki Nagashima, Hideto Saigusa, Atsuko Masunaga, Yukio Nakatani, Kenzo Hiroshima
Thyroid-like low-grade nasopharyngeal papillary adenocarcinoma (TL-LGNPPA) is an extremely rare neoplasm originating from the nasopharyngeal surface epithelium. Histopathologically, TL-LGNPPA is characterized by cuboidal/columnar tumor cells forming papillary fronds and thyroid transcription factor-1 (TTF-1) expression resembling papillary thyroid carcinoma. To date, the recorded histological features of TL-LGNPPA have been almost uniform, and the range of histological variations in this tumor type has not been sufficiently understood...
June 7, 2017: Human Pathology
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