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Virchows Archiv: An International Journal of Pathology

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https://www.readbyqxmd.com/read/29785541/new-observations-in-tumor-cell-plasticity-mutational-profiling-in-a-case-of-metastatic-melanoma-with-biphasic-sarcomatoid-transdifferentiation
#1
Niels J Rupp, Markus Rechsteiner, Sandra N Freiberger, Daniela Lenggenhager, Mirjana Urosevic, Irene A Burger, Elisabeth J Rushing, Daniela Mihic-Probst
We describe a highly unusual case of metastatic melanoma in a 61-year-old female that manifested as a single groin lymph node metastasis accompanied by two distinct, subcutaneous sarcomatoid tumors on the same leg, without evidence of a primary tumor. Characterization encompassed extensive immunohistochemical staining as well as next-generation sequencing (NGS). The lymph node metastasis showed obvious features of melanoma. The two subcutaneous lesions, however, were morphologically and immunohistochemically consistent with high-grade myxofibrosarcoma and soft tissue mixed tumor, respectively...
May 21, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29770853/predominantly-cystic-clear-cell-renal-cell-carcinoma-and-multilocular-cystic-renal-neoplasm-of-low-malignant-potential-form-a-low-grade-spectrum
#2
Maria Tretiakova, Vikas Mehta, Masha Kocherginsky, Agata Minor, Steven S Shen, Sahussapont Joseph Sirintrapun, Jorge L Yao, Isabel Alvarado-Cabrero, Tatjana Antic, Scott E Eggener, Maria M Picken, Gladell P Paner
Multilocular cystic renal cell carcinoma has been recently excluded from clear cell renal cell carcinoma (CCRCC) category and re-designated as multilocular cystic renal neoplasm of low malignant potential (MCRNLMP) due to its uniformly good outcomes. While strict distinction between MCRNLMP from predominantly cystic CCRCC (pc-CCRCC) is being emphasized, the significance of extensive true cystic component in CCRCC has not been investigated. Herein, we analyzed 57 MCRNLMP, 69 pc-CCRCC, and 46 non-cystic CCRCC...
May 17, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29770852/notch-inhibition-counteracts-paneth-cell-death-in-absence-of-caspase-8
#3
M K Jeon, E Kaemmerer, U Schneider, M Schiffer, C Klaus, J Hennings, T Clahsen, T Ackerstaff, M Niggemann, A Schippers, T Longerich, G Sellge, C Trautwein, N Wagner, C Liedtke, N Gassler
Opposing activities of Notch and Wnt signaling regulate mucosal barrier homeostasis and differentiation of intestinal epithelial cells. Specifically, Wnt activity is essential for differentiation of secretory cells including Wnt3-producing Paneth cells, whereas Notch signaling strongly promotes generation of absorptive cells. Loss of caspase-8 in intestinal epithelium (casp8∆int ) is associated with fulminant epithelial necroptosis, severe Paneth cell death, secondary intestinal inflammation, and an increase in Notch activity...
May 16, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29748715/restoration-of-an-academic-historical-gross-pathology-collection-refreshed-impact-on-current-medical-teaching
#4
Philip Eichhorn, Udo Andraschke, Fritz Dross, Carol I Geppert, Arndt Hartmann, Tilman T Rau
The declaration of Leiden pronounces the demand to conserve pathological-anatomical collections as cultural heritage. Likewise, the Institute of Pathology of the Friedrich-Alexander-University Erlangen-Nuremberg owns macroscopic pathological-anatomical specimens reaching back over 150 years. The purpose of this work is to examine the impact, meaning, and perception of such historical preparations during the current medical curriculum. Additionally, the experiences from the renovation process can be used as a template for other institutes...
May 10, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29736798/pd-l1-receptor-expression-in-vulvar-carcinomas-is-hpv-independent
#5
M Choschzick, A Gut, D Fink
PD-L1 (programmed cell death 1 ligand) is expressed on many cancer cells and prevents tumor cell death by blocking T cell activity. PD-L1 overexpression has been reported in squamous cell carcinomas of head and neck and lung cancer. To better understand the role of PD-L1 expression in vulvar cancer, we analyzed PD-L1 expression by immunohistochemistry in 55 well-characterized squamous cell carcinomas of vulva. PD-L1 was found in 72.7% of tumors. 27.3% of vulvar carcinomas showed moderate or strong PD-L1 expression...
May 8, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29736797/%C3%AE-catenin-ctnnb1-mutation-and-lef1-expression-in-sinonasal-glomangiopericytoma-sinonasal-type-hemangiopericytoma
#6
Yuka Suzuki, Shu Ichihara, Tomonori Kawasaki, Hiroyuki Yanai, Satoshi Kitagawa, Yoshie Shimoyama, Shigeo Nakamura, Masato Nakaguro
Sinonasal glomangiopericytoma (SN-GPC) is an uncommon mesenchymal tumor with myoid differentiation. Recently, mutations in exon 3 of the gene coding for β-catenin (CTNNB1) and its nuclear expression were discovered in SN-GPC. β-catenin protein is a key regulatory molecule of the canonical Wnt signaling pathway. The expression of β-catenin target proteins is not well characterized in SN-GPC. We examined three SN-GPCs by immunohistochemistry and CTNNB1 mutation analysis. All cases expressed nuclear β-catenin...
May 7, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29730836/round-robin-test-for-the-cell-of-origin-classification-of-diffuse-large-b-cell-lymphoma-a-feasibility-study-using-full-slide-staining
#7
Sarah Reinke, Julia Richter, Falko Fend, Alfred Feller, Martin-Leo Hansmann, Katrin Hüttl, Ilske Oschlies, German Ott, Peter Möller, Andreas Rosenwald, Harald Stein, Michael Altenbuchinger, Rainer Spang, Wolfram Klapper
Diffuse large B-cell lymphoma (DLBCL) is subdivided by gene expression analysis (GEP) into two molecular subtypes named germinal center B-cell-like (GCB) and activated B-cell-like (ABC) after their putative cell-of-origin (COO). Determination of the COO is considered mandatory in any new-diagnosed DLBCL, not otherwise specified according to the updated WHO classification. Despite the fact that pathologists are free to choose the method for COO classification, immunohistochemical (IHC) assays are most widely used...
May 5, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29725757/the-european-society-of-gynaecological-oncology-european-society-for-radiotherapy-and-oncology-european-society-of-pathology-guidelines-for-the-management-of-patients-with-cervical-cancer
#8
David Cibula, Richard Pötter, François Planchamp, Elisabeth Avall-Lundqvist, Daniela Fischerova, Christine Haie-Meder, Christhardt Köhler, Fabio Landoni, Sigurd Lax, Jacob Christian Lindegaard, Umesh Mahantshetty, Patrice Mathevet, W Glenn McCluggage, Mary McCormack, Raj Naik, Remi Nout, Sandro Pignata, Jordi Ponce, Denis Querleu, Francesco Raspagliesi, Alexandros Rodolakis, Karl Tamussino, Pauline Wimberger, Maria Rosaria Raspollini
BACKGROUND: Despite significant advances in the screening, detection, and treatment of preinvasive cervical lesions, invasive cervical cancer is the fifth most common cancer in European women. There are large disparities in Europe and worldwide in the incidence, management, and mortality of cervical cancer. OBJECTIVE: The European Society of Gynecological Oncology (ESGO), the European Society for Radiotherapy and Oncology (ESTRO), and the European Society of Pathology (ESP) jointly develop clinically relevant and evidence-based guidelines in order to improve the quality of care for women with cervical cancer across Europe and worldwide...
May 4, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29721609/mmp-7-expression-may-influence-the-rate-of-distant-recurrences-and-disease-specific-survival-in-hpv-positive-oropharyngeal-squamous-cell-carcinoma
#9
Seija I Vento, Lauri Jouhi, Hesham Mohamed, Caj Haglund, Antti A Mäkitie, Timo Atula, Jaana Hagström, Laura K Mäkinen
The objective of this study was to determine if matrix metalloproteinase-7 (MMP-7) expression is related to human papilloma virus (HPV) status, clinical parameters, and outcome in oropharyngeal squamous cell carcinoma (OPSCC). Tumor tissue specimens from 201 OPSCC patients treated with curative intent were available for immunohistochemistry, and the samples were stained with monoclonal MMP-7 antibody. All the patients were followed up at least 3 years or until death. MMP-7 expression did not differ between HPV-positive and HPV-negative patients...
May 2, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29721608/c-myc-amplification-and-c-myc-protein-expression-in-pancreatic-acinar-cell-carcinomas-new-insights-into-the-molecular-signature-of-these-rare-cancers
#10
Stefano La Rosa, Barbara Bernasconi, Alessandro Vanoli, Amedeo Sciarra, Kenji Notohara, Luca Albarello, Selenia Casnedi, Paola Billo, Lizhi Zhang, Maria Grazia Tibiletti, Fausto Sessa
The molecular alterations of pancreatic acinar cell carcinomas (ACCs) and mixed acinar-neuroendocrine carcinomas (MANECs) are not completely understood, and the possible role of c-MYC amplification in tumor development, progression, and prognosis is not known. We have investigated c-MYC gene amplification in a series of 35 ACCs and 4 MANECs to evaluate its frequency and a possible prognostic role. Gene amplification was investigated using interphasic fluorescence in situ hybridization analysis simultaneously hybridizing c-MYC and the centromere of chromosome 8 probes...
May 2, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29713826/pathologic-significance-of-akt-mtor-and-gsk3%C3%AE-proteins-in-oral-squamous-cell-carcinoma-affected-patients
#11
Flávia Sayuri Matsuo, Marília Ferreira Andrade, Adriano Mota Loyola, Sindeval José da Silva, Marcelo José Barbosa Silva, Sérgio Vitorino Cardoso, Paulo Rogério de Faria
Phosphatidylinositol-3-kinases are kinases that lead to AKT phosphorylation and thus mTOR and GSK3β activation. These proteins are linked to tumorigenesis, but their roles in driving cervical lymph node (CLN) metastasis of oral squamous cell carcinoma (OSCC) cells are unknown. This study aimed to investigate the role of AKT, mTOR, and GSK3β proteins in the occurrence of CLN metastasis in OSCC patients. Ninety and 18 paraffin-embedded OSCC and oral mucosa samples were included, respectively. We divided our OSCC patients into non-metastasizing (PNM) and metastasizing (PM) groups, and the expression of total AKT, pAKT1Thr308 , pAKTSer473 , GSK3β, pGSK3βSer9 , and pmTORSer2448 was analyzed by immunohistochemistry...
April 30, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29705969/the-impact-of-complete-embedding-of-remaining-tissue-in-gynecological-lymph-node-dissection-specimen-in-surgical-pathology-on-lymph-node-yield-is-it-clinically-relevant
#12
Julia Andruszkow, Ivo Meinhold-Heerlein, Brigitte Winkler, Benjamin Bruno, Ruth Knüchel, Jörg Jäkel
The assessment of nodal metastases in gynecological surgical specimen is an important staging parameter, directing further therapeutic procedures. Since the number of lymph nodes (LNs) removed is seen as an indicator of surgical and pathological quality, the demand for higher lymph node (LN) counts is raising. The goal of this prospective study was the comparison between lymph node counts of macroscopically detectable LNs and the LN yield by complete embedding and proceeding of all submitted LN-containing tissue in the pathology laboratory...
April 28, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29705968/performance-validation-of-an-amplicon-based-targeted-next-generation-sequencing-assay-and-mutation-profiling-of-648-chinese-colorectal-cancer-patients
#13
Yajian Wang, Haijing Liu, Yingyong Hou, Xiaoyan Zhou, Li Liang, Zhihong Zhang, Huaiyin Shi, Sanpeng Xu, Peizhen Hu, Zuyu Zheng, Rui Liu, Tingdong Tang, Feng Ye, Zhiyong Liang, Hong Bu
Next-generation sequencing (NGS) has become a promising approach for tumor somatic mutation detection. However, stringent validation is required for its application on clinical specimens, especially for low-quality formalin-fixed paraffin-embedded (FFPE) tissues. Here, we validated the performance of an amplicon-based targeted NGS assay, OncoAim™ DNA panel, on both commercial reference FFPE samples and clinical FFPE samples of Chinese colorectal cancer (CRC) patients. Then we profiled the mutation spectrum of 648 Chinese CRC patients in a multicenter study to explore its clinical utility...
April 28, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29675807/the-prognostic-impact-of-cdx2-correlates-with-the-underlying-mismatch-repair-status-and-braf-mutational-status-but-not-with-distant-metastasis-in-colorectal-cancer
#14
Jens Neumann, Volker Heinemann, Jutta Engel, Thomas Kirchner, Sebastian Stintzing
Loss of CDX2 expression has been proposed to be a prognostic biomarker in colorectal cancer (CRC) correlating with shorter overall (OS) and progression-free survival (PFS). Since metastatic disease, mismatch repair (MMR) deficiency, and the mutational status of BRAF are considered to be important prognostic determinants in CRC, the present study aimed to analyze CDX2 expression in correlation with these parameters. Immunohistochemistry for CDX2, hMLH1, and hMSH2 was applied to a study cohort of 503 CRC specimens (FIRE-3) and a matched case-control collection of 50 right-sided CRC specimens with synchronous distant metastases and 50 right-sided CRCs without distant metastases...
April 19, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29666945/carbonic-anhydrase-9-expression-in-well-differentiated-pancreatic-neuroendocrine-neoplasms-might-be-associated-with-aggressive-behavior-and-poor-survival
#15
Joo Young Kim, Sang Hwa Lee, Soyeon An, Sung Joo Kim, You-Na Sung, Ki-Byung Song, Dae Wook Hwang, Song Cheol Kim, Seung-Mo Hong
Well-differentiated pancreatic neuroendocrine neoplasms/tumors (PanNETs) are rare neoplasms with diverse clinical behavior. Biomarker discovery is important for predicting clinical course and prognosis of PanNET patients. Carbonic anhydrase 9 (CA9) and vimentin are hypoxia and epithelial-mesenchymal transition-related proteins of which expression in many carcinomas has been associated with poor prognosis, but their significance in PanNET has yet to be determined. We assessed CA9 and vimentin expression in 164 PanNETs and compared this with clinicopathologic characteristics...
April 18, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29654370/progression-of-urothelial-carcinoma-in-situ-of-the-urinary-bladder-a-switch-from-luminal-to-basal-phenotype-and-related-therapeutic-implications
#16
Isabella Barth, Ursula Schneider, Tobias Grimm, Alexander Karl, David Horst, Nadine T Gaisa, Ruth Knüchel, Stefan Garczyk
The stratification of bladder cancer into luminal and basal tumors has recently been introduced as a novel prognostic system in patient cohorts of muscle-invasive bladder cancer or high-grade papillary carcinomas. Using a representative immunohistochemistry panel, we analyzed luminal and basal marker expression in a large case series (n = 156) of urothelial carcinoma in situ (CIS), a precancerous lesion that frequently progresses to muscle-invasive disease. The majority of CIS cases was characterized by a positivity for luminal markers (aberrant cytokeratin (CK) 20 85% (132/156), GATA3 median Remmele score (score of staining intensity (0-3) multiplied with percentage of positive cells (0-4)): 12, estrogen receptor (ER) β Remmele score > 2: 88% (138/156), human epidermal growth factor receptor 2 (Her2) Dako score 3+ 32% (50/156), Her2 Dako score 2+ 33% (51/156)), and marginal expression of basal markers (CK5/6+ 2% (3/156), CK14+ 1% (2/156))...
April 13, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29651624/in-papillary-thyroid-carcinoma-expression-by-immunohistochemistry-of-braf-v600e-pd-l1-and-pd-1-is-closely-related
#17
Yanhua Bai, Ting Guo, Xiaozheng Huang, Qi Wu, Dongfeng Niu, Xinqiang Ji, Qin Feng, Zhongwu Li, Kennichi Kakudo
Immune checkpoint inhibitor therapies targeting PD-L1/PD-1 have been shown to be effective in treating several types of human cancer. In papillary thyroid carcinoma (PTC), little is known about the expression of PD-L1/PD-1 in the tumor microenvironment or its potential correlation with BRAF V600E mutation status. In this study, we examined the expression of PD-L1, PD-1, and BRAF V600E in PTC by immunohistochemistry and investigated the clinical significance of expression status. We studied the expression of PD-L1, PD-1, and BRAF V600E by immunohistochemical staining in 110 cases of PTC with a diameter > 1 cm...
April 12, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29644430/pathology-of-idiopathic-non-cirrhotic-portal-hypertension
#18
REVIEW
Maria Guido, Samantha Sarcognato, Diana Sacchi, Guido Colloredo
Idiopathic non-cirrhotic portal hypertension is an under-recognized vascular liver disease of unknown etiology, characterized by clinical signs of portal hypertension in the absence of cirrhosis. By definition, any disorder known to cause portal hypertension in the absence of cirrhosis and any cause of chronic liver disease must be excluded to make a diagnosis of idiopathic non-cirrhotic portal hypertension. However, the diagnosis is often difficult because the disease resembles cirrhosis and there is no gold standard test...
April 12, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29637270/dual-jak1-and-stat3-mutations-in-a-breast-implant-associated-anaplastic-large-cell-lymphoma
#19
Audrey Letourneau, Marie Maerevoet, Dina Milowich, Roland Dewind, Bettina Bisig, Edoardo Missiaglia, Laurence de Leval
No abstract text is available yet for this article.
April 10, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29629513/postoperative-radiotherapy-is-dispensable-for-oscc-patients-with-micrometastases-in-lymph-nodes
#20
Y M Pu, Y Yang, Y J Wang, L Ding, X F Huang, Z Y Wang, Y H Ni, Q G Hu
Lymph node metastasis is a decisive factor for performing postoperative radiotherapy for oral squamous cell carcinoma (OSCC). However, whether OSCC patients with only micrometastasis need postoperative radiotherapy is unclear. In this study, OSCC patients (n = 311) with negative (n = 247), only micrometastasis (n = 44) and macrometastasis (n = 20) were detected and selected by HE staining. Micrometastasis was re-assessed using immunohistochemical staining of cytokeratin (CK) in HE-negative patients to find out the false negative cases...
April 9, 2018: Virchows Archiv: An International Journal of Pathology
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