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Virchows Archiv: An International Journal of Pathology

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https://www.readbyqxmd.com/read/27915441/ovarian-metastasis-from-uveal-melanoma-with-mlh1-pms2-protein-loss-in-a-patient-with-germline-mlh1-mutated-lynch-syndrome-consequence-or-coincidence
#1
João Lobo, Carla Pinto, Micaela Freitas, Manuela Pinheiro, Rámon Vizcaino, Esther Oliva, Manuel R Teixeira, Carmen Jerónimo, Carla Bartosch
Currently, uveal melanoma is not considered within the Lynch syndrome tumor spectrum. However, there are studies suggesting a contribution of microsatellite instability in sporadic uveal melanoma tumorigenesis. We report a 45-year-old woman who was referred for genetic counseling due to a family history of Lynch syndrome caused by a MLH1 mutation. She originally underwent enucleation of the right eye secondary to a uveal spindle cell melanoma diagnosed at age 25. The tumor recurred 22 years later presenting as an ovarian metastasis and concurrently a microscopic endometrial endometrioid carcinoma, grade 1/3 was diagnosed...
December 3, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27915440/liver-steatosis-in-pre-transplant-liver-biopsies-can-be-quantified-rapidly-and-accurately-by-nuclear-magnetic-resonance-analysis
#2
Stefanie Bertram, Cathrin Myland, Sandra Swoboda, Anja Gallinat, Thomas Minor, Nils Lehmann, Michael Thie, Julia Kälsch, Leona Pott, Ali Canbay, Thomas Bajanowski, Henning Reis, Andreas Paul, Hideo A Baba
Donor livers marginally acceptable or acceptable according to extended criteria are more frequently transplanted due to the growing discrepancy between demand and availability of donor organs. One type of marginally acceptable graft is a steatotic donor liver, because it is more sensitive to ischemia-reperfusion injury. Thus, quantitative assessment of steatosis is crucial prior to liver transplantation. Extent of steatosis of 49 pre-reperfusion liver biopsies from patients who received orthotopic liver transplantation was assessed by three techniques: semi-quantitative histological evaluation, computerized histomorphometry, and NMR-based estimation of fat content...
December 3, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27913862/prognostic-impact-of-her3-based-on-protein-and-mrna-expression-in-high-grade-serous-ovarian-carcinoma
#3
Ulrike Unger, Carsten Denkert, Ioana Braicu, Jalid Sehouli, Manfred Dietel, Sibylle Loibl, Silvia Darb-Esfahani
HER3 is a member of the epidermal growth factor family and was predominantly described as a negative prognostic factor in various solid tumors as well as in ovarian cancer. In this study, we investigated HER3 on protein and mRNA expression in histologically defined subtypes of ovarian cancer looking for an influence on patient's survival. Altogether, we examined HER3 in ovarian high-grade serous (HGSC, n = 320), low-grade serous (LGSC, n = 55), endometrioid (EC, n = 33), and clear cell (CCC, n = 48) carcinomas using immunohistochemistry (IHC) and quantitative real-time reverse transcription PCR (qRT-PCR)...
December 2, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27913861/cxcl12-expression-and-pd-l1-expression-serve-as-prognostic-biomarkers-in-hcc-and-are-induced-by-hypoxia
#4
Alexander Semaan, Dimo Dietrich, Dominik Bergheim, Jörn Dietrich, Jörg C Kalff, Vittorio Branchi, Hanno Matthaei, Glen Kristiansen, Hans-Peter Fischer, Diane Goltz
Anti-PD-1 treatment increases anti-tumour immune responses in animal models of hepatocellular carcinoma (HCC). Sorafenib, the mainstay of treatment of HCC patients, however, leads to tumour hypoxia and thereby abrogates the efficacy of anti-PD-1 treatment. This served as a rationale to implement CXCR4 inhibition as adjunct to sorafenib and anti-PD-1 treatment in murine HCC models. We studied the relationship between tumour hypoxia, PD-L1 and CXCL12 expression in human HCC, aiming to test the rationale for triple therapy combining sorafenib, PD-1 immune checkpoint inhibitors and CXCR4 inhibitors...
December 2, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27909812/in-phyllodes-tumors-of-the-breast-expression-of-sparc-osteonectin-bm40-mrna-by-in-situ-hybridization-correlates-with-protein-expression-by-immunohistochemistry-and-is-associated-with-tumor-progression
#5
Nah Ihm Kim, Ga-Eon Kim, Ji Shin Lee, Min Ho Park
Secreted protein acidic and rich in cysteine (SPARC) plays an essential role in tumor invasion and metastasis. The present work was undertaken to detect expression of SPARC mRNA in phyllodes tumors (PTs) and its association with SPARC protein expression. This study also evaluated expression of SPARC mRNA and its correlation between grade and clinical behavior of PTs. In addition, we assessed in PTs the association of expression of SPARC with that of matrix metalloproteinase (MMP)-2 and of MMP-9. SPARC mRNA expression was determined by RNAscope in situ hybridization (ISH) in 50 benign, 22 borderline, and 10 malignant PTs using a tissue microarray...
December 1, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27888357/aberrant-cytoplasmic-expression-of-mhcii-confers-worse-progression-free-survival-in-diffuse-large-b-cell-lymphoma
#6
Samantha Kendrick, Lisa M Rimsza, David W Scott, Graham W Slack, Pedro Farinha, King L Tan, Daniel Persky, Soham Puvvada, Joseph M Connors, Laurie Sehn, Randy D Gascoyne, Monika Schmelz
No abstract text is available yet for this article.
November 25, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27885422/cd44-induces-foxp3-expression-and-is-related-with-favorable-outcome-in-breast-carcinoma
#7
Elena Sanmartín, Fernando Ortiz-Martínez, Eloy Pomares-Navarro, Araceli García-Martínez, Montserrat Rodrigo-Baños, Marta García-Escolano, Leire Andrés, Enrique Lerma, Francisco I Aranda, Pascual Martínez-Peinado, José M Sempere-Ortells, Gloria Peiró
We studied the relationship between CD44 and Forkhead box P3 (FOXP3) gene expression in cell lines and breast carcinomas and their association with clinicopathological variables and patient outcome. We assessed messenger RNA (mRNA) expression of CD44 and FOXP3 by quantitative real-time PCR and determined the number of FOXP3+ Tregs by immunohistochemistry in 264 breast cancer specimens. CD44 was stimulated with hyaluronan treatment, and the accompanying changes in FOXP3 mRNA expression in breast cancer cell lines representing breast cancer subtype were assessed...
November 24, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27864690/infrequent-mismatch-repair-protein-loss-in-gallbladder-cancer-patients-in-japan
#8
Hiroshi Yoshida, Kazuaki Shimada, Nobuyoshi Hiraoka
No abstract text is available yet for this article.
November 18, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27864689/epstein-barr-virus-infection-and-gene-promoter-hypermethylation-in-rheumatoid-arthritis-patients-with-methotrexate-associated-b-cell-lymphoproliferative-disorders
#9
Kozue Ejima-Yamada, Yumi Oshiro, Seiichi Okamura, Tomoaki Fujisaki, Yasuhito Mihashi, Kazuo Tamura, Tomoko Fukushige, Masaru Kojima, Kazutoshi Shibuya, Morishige Takeshita
We analyzed CpG-island hypermethylation status in 12 genes of paraffin-embedded tissues from 38 rheumatoid arthritis (RA) patients with methotrexate (MTX)-associated large B cell lymphoproliferative disorder (BLPD), 11 RA patients with non-MTX-associated BLPD (non-MTX-BLPD), 22 controls with diffuse large B cell lymphoma (DLBCL), and 10 controls with Epstein-Barr virus (EBV)(+) DLBCL. Among them, tumor cells from EBV(+) MTX-BLPD patients and control EBV(+) DLBCL patients had significantly lower median incidence of CpG island methylator phenotype (CIMP) than those from non-MTX-BLPD and control DLBCL groups (2...
November 18, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27864688/detection-of-mutations-in-the-braf-gene-in-patients-with-kit-and-pdgfra-wild-type-gastrointestinal-stromal-tumors
#10
Karin Jasek, Veronika Buzalkova, Gabriel Minarik, Andrea Stanclova, Peter Szepe, Lukas Plank, Zora Lasabova
Gastrointestinal stromal tumors (GISTs) are characterized by mutations in exons 9, 11, 13, and 17 of KIT or exons 12, 14, and 18 of PDGFRA gene. However, approximately 10 to 15 % of GISTs lack the mutations in KIT and PDGFRA, and these are referred to as wild-type GISTs which are less sensitive to tyrosine-kinase inhibitors. The aim of this study was to detect BRAF mutations in patients with wild-type GISTs. We applied a sensitive allele-specific PCR, which was optimized using the V600E mutation-harboring cell line RKO, followed by verification of the results by dideoxy sequencing...
November 18, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27853865/adequately-defining-tumor-cell-proportion-in-tissue-samples-for-molecular-testing-improves-interobserver-reproducibility-of-its-assessment
#11
Benoît Lhermitte, Caroline Egele, Noëlle Weingertner, Damien Ambrosetti, Bérengère Dadone, Valérie Kubiniek, Fanny Burel-Vandenbos, John Coyne, Jean-François Michiels, Marie-Pierre Chenard, Etienne Rouleau, Jean-Christophe Sabourin, Jean-Pierre Bellocq
Gene mutation status assessment of tumors has become standard practice in diagnostic pathology. This is done using samples comprising tumor cells but also non-tumor cells, which may dramatically dilute the proportion of tumor DNA and induce false negative results. Increasing sensitivity of molecular tests presently allows detection of a targeted mutation in a sample with a small percentage of tumor cells, but assessment of tumor cellularity remains essential to adequately interpret the results of molecular tests...
November 16, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27830327/lack-of-mutation-of-dicer1-and-foxl2-genes-in-microcystic-stromal-tumor-of-the-ovary
#12
Alexandra Meurgey, Françoise Descotes, Eliane Mery-Lamarche, Mojgan Devouassoux-Shisheboran
Microcystic stromal tumors (MCST), first described in 2009 by Irving et al., are rare ovarian neoplasms. The entity was introduced into the 2014 WHO classification of tumors of female reproductive organs in the group of sex cord-stromal tumors, which is rather heterogeneous. We studied three cases of ovarian tumor with the characteristic morphological features and immunohistochemical marker profiles of MCST. The three tumors showed micro, and macrocystic patterns with solid areas, and were composed of small round to spindle-shaped cells, without atypia...
November 9, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27796584/follicular-lymphoma-with-rosette-formation-with-an-exclusive-diffuse-pattern
#13
Fadi Alakeel, Louis DePalma
No abstract text is available yet for this article.
October 28, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27787595/reproducibility-of-measurement-of-myometrial-invasion-in-endometrial-carcinoma
#14
Louis J M van der Putten, Koen van de Vijver, Carla Bartosch, Ben Davidson, Sonia Gatius, Xavier Matias-Guiu, W Glenn McCluggage, Gemma Toledo, Anneke A M van der Wurff, Johanna M A Pijnenborg, Leon F A G Massuger, Johan Bulten
Myometrial invasion (MI) as a percentage (%MI), categorized into <50 or ≥50 %, is an important predictor of prognosis in endometrial carcinoma. Recent studies suggest that tumor-free distance (TFD) to serosa and the absolute depth of invasion (DOI) might be stronger predictors of prognosis. Although reproducibility is important in clinical practice for patient prognostication and treatment, reproducibility of these methods for the measurement of MI is largely unknown. One or two slides from 50 patients with FIGO stage I endometrioid endometrial carcinoma were viewed by seven gynecological pathologists, who were requested to measure %MI, TFD, and DOI...
October 27, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27778094/tumor-enucleation-specimens-of-small-renal-tumors-more-frequently-have-a-positive-surgical-margin-than-partial-nephrectomy-specimens-but-this-is-not-associated-with-local-tumor-recurrence
#15
Lu Wang, Ian Hughes, Connor Snarskis, Helyn Alvarez, Jingyang Feng, Gopal N Gupta, Maria M Picken
Approaches to nephron-sparing surgeries (NSS) of renal lesions include partial nephrectomy (PN) and tumor enucleation (TE). Our objective was to examine the pathology of the pseudocapsule and status of the surgical margin in small renal masses treated by NSS and to correlate these findings with the surgical and oncological outcomes. All consecutive renal TE and PN specimens obtained during the period between January 2012 and December 2014, of which clinical follow-up was available, were included in this study...
October 24, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27771769/high-expression-of-cytoplasmic-polyadenylation-element-binding-protein-4-correlates-with-poor-prognosis-of-patients-with-colorectal-cancer
#16
Xiaosheng He, Xutao Lin, Muyan Cai, Dejun Fan, Xiuting Chen, Lei Wang, Xiaojian Wu, Ping Lan, Jianping Wang
Cytoplasmic polyadenylation element-binding protein 4 (CPEB4), a zinc-finger-containing sequence-specific RNA-binding protein, has been associated with tumor proliferation, invasion, and migration. Expression of CPEB4 and its prognostic significance in human colorectal cancer (CRC) have not been studied. The aim of the present study was to investigate expression of CPEB4 and its prognostic significance in CRC. Expression of CPEB4 in CRC tissues from two independent cohorts was examined by immunohistochemistry...
October 22, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27757533/the-challenge-of-diagnosing-a-malignancy-metastatic-to-the-ovary-clinicopathological-characteristics-vary-and-morphology-can-be-different-from-that-of-the-corresponding-primary-tumor
#17
João Lobo, Bianca Machado, Renata Vieira, Carla Bartosch
An accurate diagnosis of metastases to the ovary is essential for adequate patient management. The aim of this retrospective study was to characterize clinicopathological features of metastatic malignancies that presented as an ovarian mass and compare them with their corresponding primary tumors. We reviewed clinical files and histological material of 120 patients with metastases to the ovary, diagnosed in our center between 2000 and 2014. Metastases were diagnosed before (18 %), synchronously (33 %), or after (49 %) the primary tumor was identified; 25 % were single, 40 % were unilateral; 47 % were ≥13 cm...
October 18, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27743032/small-cell-like-glandular-proliferation-of-prostate-a-rare-lesion-not-related-to-small-cell-prostate-cancer
#18
Oleksandr N Kryvenko, Sean R Williamson, Kiril Trpkov, Nilesh S Gupta, Daniel Athanazio, Martin K Selig, Paul Taylor Smith, Cristina Magi-Galluzzi, Merce Jorda
Small cell-like change (SCLC) is a rare prostate lesion which has been described in only two previous studies (total of eight cases). Its relation to possible neuroendocrine differentiation remained unclear. We evaluated 11 SCLC cases with immunohistochemistry and electron microscopy. SCLC was characterized by crowded hyperchromatic small nuclei with scant cytoplasm, rosette-like structures, finely granular chromatin with indistinct nucleoli, and lack of mitoses, apoptoses, and necroses. In nine cases, SCLC was admixed with high-grade cancer, and in two cases, it represented a separate intraductal process, spatially remote from a low-volume Gleason score 6 (grade group 1) cancer...
October 14, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27678269/integration-of-next-generation-sequencing-in-clinical-diagnostic-molecular-pathology-laboratories-for-analysis-of-solid-tumours-an-expert-opinion-on-behalf-of-iqn-path-asbl
#19
Zandra C Deans, Jose Luis Costa, Ian Cree, Els Dequeker, Anders Edsjö, Shirley Henderson, Michael Hummel, Marjolijn Jl Ligtenberg, Marco Loddo, Jose Carlos Machado, Antonio Marchetti, Katherine Marquis, Joanne Mason, Nicola Normanno, Etienne Rouleau, Ed Schuuring, Keeda-Marie Snelson, Erik Thunnissen, Bastiaan Tops, Gareth Williams, Han van Krieken, Jacqueline A Hall
The clinical demand for mutation detection within multiple genes from a single tumour sample requires molecular diagnostic laboratories to develop rapid, high-throughput, highly sensitive, accurate and parallel testing within tight budget constraints. To meet this demand, many laboratories employ next-generation sequencing (NGS) based on small amplicons. Building on existing publications and general guidance for the clinical use of NGS and learnings from germline testing, the following guidelines establish consensus standards for somatic diagnostic testing, specifically for identifying and reporting mutations in solid tumours...
September 27, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27631337/validation-of-specificity-of-antibodies-for-immunohistochemistry-the-case-of-ror2
#20
Sean S Q Ma, Claire E Henry, Estelle Llamosas, Rupert Higgins, Benjamin Daniels, Luke B Hesson, Nicholas J Hawkins, Robyn L Ward, Caroline E Ford
The Wnt signalling receptor receptor tyrosine kinase-like orphan receptor 2 (ROR2) is implicated in numerous human cancers. However, there have been conflicting reports regarding ROR2 expression, some studies showing upregulation and others downregulation of ROR2 in the same cancer type. The majority of these studies used immunohistochemistry (IHC) to detect ROR2 protein, without validation of the used antibodies. There appears to be currently no consensus on the antibody best suited for ROR2 detection or how ROR2 expression changes in various cancer types...
September 8, 2016: Virchows Archiv: An International Journal of Pathology
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