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https://www.readbyqxmd.com/read/28079792/amplification-of-her2-and-top2a-and-deletion-of-top2a-genes-in-a-series-of-taiwanese-breast-cancer
#1
Jim-Ray Chen, Hui-Ping Chien, Kuo-Su Chen, Cheng-Cheng Hwang, Huang-Yang Chen, Kun-Yan Yeh, Tsan-Yu Hsieh, Liang-Che Chang, Yuan-Chun Hsu, Ren-Jie Lu, Chung-Ching Hua
BACKGROUND: The prognostic relevance of topoisomerase II alpha (TOP2A) copy number change remains not well established. This study is aimed to investigate the frequency and pattern of TOP2A aberrations; to correlate TOP2A alterations with human epidermal growth factor receptor 2 (HER2) status and clinicopathological parameters, and further to explore prognostic value of TOP2A and HER2 status in breast cancer in Taiwan. METHODS: We analyzed tissue samples from 311 invasive carcinomas in tissue microarrays for TOP2A and HER2 status by fluorescent in situ hybridization...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28073374/successful-multimodal-treatment-of-intraoral-salivary-duct-carcinoma-in-a-patient-with-multiple-lymph-node-metastases-a-case-report
#2
Shuichi Imaue, Kei Tomihara, Takeru Hamashima, Gakuto Tomizawa, Kuninori Nomura, Masakiyo Sasahara, Makoto Noguchi
BACKGROUND: Salivary duct carcinoma (SDC) is a high-grade salivary gland malignancy that is associated with an aggressive clinical behavior and poor prognosis. Herein, we report on a long surviving case of SDC of the minor salivary gland with multiple lymph node metastases (LNMs). CASE PRESENTATION: An 83-year-old woman presented with a history of lymphadenopathy in the right side of the neck and recent onset and rapid growth of a mass in the right buccal region...
January 10, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28072974/-clinicopathologic-features-of-mammary-analogue-secretory-carcinoma-of-salivary-glands
#3
X P Zhang, H Ni, X Wang, H Chen, S S Shi, B Yu, X J Zhou, Q Rao
Objective: To investigate the clinicopathological features of mammary analogue secretory carcinoma (MASC) of salivary glands, and its diagnosis, differential diagnosis, immunohistochemistry and molecular pathology. Methods: Seventeen cases of MASC were enrolled, with 9 cases of salivary acinar cell carcinoma and 18 cases of adenoid cystic carcinoma as control groups from Nanjing General Hospital from 1997 to 2014 were included in this retrospective study, combined with immunohistochemistry and molecular detection of ETV6-NTRK3 gene fusion...
January 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28056854/establishing-a-xenograft-mouse-model-of-peritoneal-dissemination-of-gastric-cancer-with-organ-invasion-and-fibrosis
#4
Mitsuyoshi Okazaki, Sachio Fushida, Shinichi Harada, Tomoya Tsukada, Jun Kinoshita, Katsunobu Oyama, Tomoharu Miyashita, Itasu Ninomiya, Tetsuo Ohta
BACKGROUND: The clinical prognosis of gastric cancer with peritoneal dissemination is poor because of its chemoresistance and rich fibrosis. While several gastric cancer cell lines have been used to establish models of peritoneal dissemination by intraperitoneal injection, most peritoneal tumors that form adopt a medullary pattern in microscopic appearance. This histological finding for the model differs from that in the clinical situation. This study was performed to demonstrate the contribution of human peritoneal mesothelial cells (HPMCs) to fibrotic tumor formation and to establish a new xenograft model with high potential for peritoneal dissemination with organ invasion and extensive fibrosis...
January 5, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28038793/histologic-characteristics-of-thymic-adenocarcinomas-clinicopathologic-study-of-a-nine-case-series-and-a-review-of-the-literature
#5
Ah-Young Kwon, Joungho Han, Jinah Chu, Yong Soo Choi, Byeong-Ho Jeong, Myung-Ju Ahn, Yong Chan Ahn
Primary thymic adenocarcinoma is an extraordinarily rare malignancy; only 49 cases have been reported in the medical literature to date. Because of its rarity, clinical and pathologic characteristics of thymic adenocarcinoma are unclear. We present nine cases of primary thymic adenocarcinoma and discuss clinicopathologic findings in the context of the existing literature. Two-hundred twenty-six thymic carcinoma cases were diagnosed at Samsung Medical Center in Korea, from January, 2001 to July, 2016. Nine of these 226 cases were primary thymic adenocarcinomas...
November 15, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28034727/diagnosing-colorectal-medullary-carcinoma-interobserver-variability-and-clinicopathological-implications
#6
Lik Hang Lee, Rhonda K Yantiss, Eran Sadot, Bing Ren, Marcela Santos Calvacanti, Jaclyn F Hechtman, Sinisa Ivelja, Be Huynh, Yue Xue, Tatiana Shitilbans, Hamza Guend, Zsofia K Stadler, Martin R Weiser, Efsevia Vakiani, Mithat Gonen, David S Klimstra, Jinru Shia
Colorectal medullary carcinoma, recognized by the World-Health-Organization as a distinct histologic subtype, is commonly regarded as a specific entity with an improved prognosis and unique molecular pathogenesis. A fundamental but as-yet unaddressed question, however, is whether it can be diagnosed reproducibly. In this study, by analyzing 80 colorectal adenocarcinomas whose dominant growth pattern was solid (thus encompassing medullary carcinoma and its mimics), we provided a detailed description of the morphological spectrum from "classic medullary histology" to non-medullary poorly-differentiated histologies and demonstrated significant overlapping between categories...
December 26, 2016: Human Pathology
https://www.readbyqxmd.com/read/28031838/stromal-micropapillary-predominant-lung-adenocarcinoma-a-rare-histological-phenotype-with-poor-prognosis
#7
Takamitsu Hayakawa, Shogo Tajima, Masaru Tsukui, Yusuke Takanashi, Hiroshi Neyatani, Kazuhito Funai
An extremely rare case of stromal micropapillary predominant lung adenocarcinoma is presented in this study. A 70-year-old woman visited our hospital because of an abnormal shadow on chest X-ray. Chest computed tomography revealed a nodule in the left lower lobe and a mass in the left upper lobe. She underwent an exploratory thoracotomy owing to the suspicion of advanced lung cancer. Pathological examination of the left lower lobe nodule revealed tumour cells with more than half the tumour cells showing stromal micropapillary pattern (SMP), consisting of tumour cells invading the fibrotic stroma...
November 2016: Respirology Case Reports
https://www.readbyqxmd.com/read/28024927/utilization-patterns-and-trends-in-epidermal-growth-factor-receptor-egfr-mutation-testing-among-patients-with-newly-diagnosed-metastatic-lung-cancer
#8
Chan Shen, Kenneth L Kehl, Bo Zhao, George R Simon, Shouhao Zhou, Sharon H Giordano
INTRODUCTION: Epidermal growth factor receptor (EGFR)-targeted therapy significantly improves outcomes among patients with non-small-cell lung cancer (NSCLC) whose tumors harbor sensitizing mutations. Patterns of EGFR testing have not been well-documented. The objective of this population-based study is to assess the testing pattern on a national scale. PATIENTS AND METHODS: Using MarketScan 2012 to 2014 data, we identified 5842 patients newly diagnosed with metastatic lung cancer from January 2013 to June 2014 and assessed their EGFR mutation testing pattern in the 6 months after diagnosis...
November 11, 2016: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28017651/surgical-treatment-of-salivary-malignant-tumors
#9
Davide Lombardi, Marc McGurk, Vincent Vander Poorten, Marco Guzzo, Remo Accorona, Vittorio Rampinelli, Piero Nicolai
Salivary gland malignant tumors (SGMT) are of key interest for head and neck surgeons since surgery with adjuvant radiotherapy is considered the treatment of choice in most of the cases. Some factors, namely rarity, high histologic heterogeneity, and possible occurrence in all the head and neck subsites, contribute to make this topic very controversial; some unclear aspects pertain surgical treatment. When dealing with major salivary gland malignant tumors (MaSGMT), the most debated issues remain the extent of surgery and management of facial nerve...
December 22, 2016: Oral Oncology
https://www.readbyqxmd.com/read/28011645/in-vitro-and-in-vivo-analyses-reveal-profound-effects-of-fibroblast-growth-factor-16-as-a-metabolic-regulator
#10
Ingrid C Rulifson, Patrick Collins, Li Miao, Dana Nojima, Ki Jeong Lee, Miki Hardy, Jamila Gupte, Kelly Hensley, Kim Samayoa, Cynthia Cam, James B Rottman, Mike Ollmann, William G Richards, Yang Li
The discovery of brown adipose tissue (BAT) as a key regulator of energy expenditure has sparked interest in identifying novel soluble factors capable of activating inducible BAT (iBAT) to combat obesity. Using a high content cell-based screen, we identified Fibroblast Growth Factor (FGF) 16 as a potent inducer of several physical and transcriptional characteristics analogous to those of both classical BAT and iBAT. Over-expression of Fgf16 in vivo recapitulated several of our in vitro findings, specifically significant induction of Ucp1 gene and UCP1 protein expression in inguinal white adipose tissue (iWAT), a common site for emergent active iBAT...
December 23, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28005148/microanatomy-and-life-history-in-palaeopleurosaurus-rhynchocephalia-pleurosauridae-from-the-early-jurassic-of-germany
#11
Nicole Klein, Torsten M Scheyer
The tuatara (Sphenodon punctatus) from New Zealand is often-erroneously-identified as a 'living fossil', although it is the lone survivor of a large, successful radiation of Rhynchocephalia, sister taxon to squamates (lizards and snakes), that thrived through the Mesozoic and Cenozoic and experienced an intricate evolution of life histories and feeding habits. Within Rhynchocephalia, only Pleurosauridae are thought to be marine and piscivorous. Here, we present bone histological data of the Jurassic pleurosaurid Palaeopleurosaurus, showing osteosclerosis (i...
February 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/27994720/repair-potential-of-matrix-induced-bone-marrow-aspirate-concentrate-and-matrix-induced-autologous-chondrocyte-implantation-for-talar-osteochondral-repair-patterns-of-some-catabolic-inflammatory-and-pain-mediators
#12
Giovanna Desando, Isabella Bartolotti, Francesca Vannini, Carola Cavallo, Francesco Castagnini, Roberto Buda, Sandro Giannini, Massimiliano Mosca, Erminia Mariani, Brunella Grigolo
OBJECTIVE: The low regenerative potential of cartilage contributed to the development of different cell therapies aimed to improve the clinical outcome in young patients with Osteochondral Lesions of the Talus (OLT). This study is designed to assess the regenerative potential of autologous matrix-induced Bone Marrow Aspirate Concentrate (mBMAC) and matrix-induced Autologous Chondrocyte Implantation (mACI) evaluating, on a small number of osteochondral biopsies, the expression of some catabolic, inflammatory, and pain mediators...
January 2017: Cartilage
https://www.readbyqxmd.com/read/27994000/the-natural-history-of-endometrial-polyps
#13
M Wong, B Crnobrnja, V Liberale, K Dharmarajah, M Widschwendter, D Jurkovic
STUDY QUESTION: What is the natural history of endometrial polyps in women who are managed expectantly? SUMMARY ANSWER: The growth rates of expectantly managed polyps vary considerably and cannot be accurately predicted. WHAT IS KNOWN ALREADY: The majority of polyps detected on ultrasound are treated surgically, and therefore little is known about their natural history. Some polyps have been reported to regress spontaneously without the need for treatment; however, the factors predictive of regression are unknown...
December 18, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27982025/morphological-characterization-of-colorectal-cancers-in-the-cancer-genome-atlas-reveals-distinct-morphology-molecular-associations-clinical-and-biological-implications
#14
Jinru Shia, Nikolaus Schultz, Deborah Kuk, Efsevia Vakiani, Sumit Middha, Neil H Segal, Jaclyn F Hechtman, Michael F Berger, Zsofia K Stadler, Martin R Weiser, Jedd D Wolchok, C Richard Boland, Mithat Gönen, David S Klimstra
The Cancer Genome Atlas data on colorectal carcinoma have provided a comprehensive view of the tumor's genomic alterations and their tumorigenic roles. Tumor morphology, however, has not been fully integrated into the analysis. The aim of this study was to explore relevant associations between tumor morphology and the newly characterized genomic alterations in colorectal carcinoma. Two hundred and seven colorectal carcinomas that had undergone whole-exome sequencing as part of The Cancer Genome Atlas project and had adequate virtual images in the cBioPortal for Cancer Genomics constituted our study population...
December 16, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27956229/milk-fat-globule-egf-factor-8-secreted-by-mesenchymal-stem-cells-protects-against-liver-fibrosis-in-mice
#15
Su Yeon An, Yu Jin Jang, Hee-Joung Lim, Jiyou Han, Jaehun Lee, Gyunggyu Lee, Ji Young Park, Seo-Young Park, Ji Hyang Kim, Byung-Rok Do, Chugseong Han, Hee-Kyung Park, Ok-Hee Kim, Myeong Jun Song, Say-June Kim, Jong-Hoon Kim
BACKGROUND & AIMS: Mesenchymal stem cells (MSCs) mediate tissue repair and might be used to prevent or reduce liver fibrosis. However, little is known about the anti-fibrotic factors secreted from MSCs or their mechanisms. METHODS: Umbilical cord-derived MSCs (UCMSCs) were differentiated into hepatocyte-like cells (hpUCMSCs), medium was collected, and secretome proteins were identified and quantified using nanochip-liquid chromatography/quadruple time-of-flight mass spectrometry...
December 9, 2016: Gastroenterology
https://www.readbyqxmd.com/read/27943100/k-ras-h-ras-n-ras-and-b-raf-mutation-and-expression-analysis-in-wilms-tumors-association-with-tumor-growth
#16
Efterpi Dalpa, Victor Gourvas, Nikolaos Soulitzis, Demetrios A Spandidos
Nephroblastoma (Wilms tumor) is a kidney neoplasia, predominately occurring at very young age, resulting from the malignant transformation of renal stem cells. The Ras proto-oncogenes and B-Raf are members of an intracellular cascade pathway, which regulates cell growth and differentiation, and ultimately cancer development. Our objective was to determine the mutation rate and to measure the mRNA levels of the three Ras genes and of B-Raf in formalin-fixed paraffin-embedded tissue samples from 32 patients with nephroblastoma and 10 controls...
January 2017: Medical Oncology
https://www.readbyqxmd.com/read/27943096/gastrointestinal-stromal-tumors-gists-seap-seom-consensus-on-pathologic-and-molecular-diagnosis
#17
J Martin-Broto, V Martinez-Marín, C Serrano, N Hindi, J A López-Guerrero, R Ramos-Asensio, A Vallejo-Benítez, D Marcilla-Plaza, R González-Cámpora
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the digestive tract, with an incidence of 1.1 cases/100,000 inhabitants/year. A group of experts from the Spanish Society of Pathology and the Spanish Society of Oncology met to discuss a brief update on GISTs and agree on aspects relating to the pathological and molecular diagnosis of these tumors. GISTs are generally solitary, well-circumscribed lesions of variable size (<10 mm-35 cm) that may present with intra- or extra-luminal parietal growth or a mixed-type (hourglass) growth pattern...
December 9, 2016: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/27941755/fibroblastic-foci-covered-with-alveolar-epithelia-exhibiting-epithelial-mesenchymal-transition-destroy-alveolar-septa-by-disrupting-blood-flow-in-idiopathic-pulmonary-fibrosis
#18
Miki Yamaguchi, Sachie Hirai, Yusuke Tanaka, Toshiyuki Sumi, Masahiro Miyajima, Taijiro Mishina, Gen Yamada, Mitsuo Otsuka, Tadashi Hasegawa, Takashi Kojima, Toshiro Niki, Atsushi Watanabe, Hiroki Takahashi, Yuji Sakuma
Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive interstitial lung disease of unknown cause. IPF has a distinct histopathological pattern of usual interstitial pneumonia in which fibroblastic foci (FF) represent the leading edge of fibrotic destruction of the lung. Currently there are three major hypotheses for how FF are generated: (1) from resident fibroblasts, (2) from bone marrow-derived progenitors of fibroblasts, and (3) from alveolar epithelial cells that have undergone epithelial-mesenchymal transition (EMT)...
December 12, 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/27940197/delivery-vehicle-effects-on-bone-regeneration-and-heterotopic-ossification-induced-by-high-dose-bmp-2
#19
Laxminarayanan Krishnan, Lauren B Priddy, Camden Esancy, Brett S Klosterhoff, Hazel Y Stevens, Lisa Tran, Robert E Guldberg
: Bone morphogenetic protein-2 (BMP-2), delivered on absorbable collagen sponge, is frequently used to treat bone defects. However, supraphysiological BMP-2 doses are common and often associated with complications such as heterotopic ossification and inflammation, causing pain and impaired mobility. This has prompted investigations into strategies to spatially control bone regeneration, for example growth factor delivery in appropriate scaffolds. Our objective was to investigate the spatiotemporal effects of high dose BMP-2 on bone regeneration as a function of the delivery vehicle...
December 8, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27926794/metastatic-type-a-thymoma-morphologic-and-genetic-correlation
#20
Tobias Bürger, Inga-Marie Schaefer, Stefan Küffer, Hanibal Bohnenberger, Kirsten Reuter-Jessen, John Kwok-Cheung Chan, Alexander Emmert, Marc Hinterthaner, Alexander Marx, Philipp Ströbel
INTRODUCTION: The vast majority of type A thymomas are diagnosed in tumor stage 1 or 2, and metastatic cases are exceedingly rare. The histological and genetic features of such metastatic type A thymomas have not been described in detail. METHODS: Five metastatic type A thymomas in tumor stage Masaoka IVb that had been reviewed by a panel of expert pathologists were analyzed using comparative genomic hybridization (CGH). All cases had metastasized to the lungs. RESULTS: Cases #1, 2 and 3 showed the prototypic morphology of type A thymomas with mostly solid growth patterns...
December 7, 2016: Histopathology
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