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Diagnostic Pathology

André Homeyer, Seddik Hammad, Lars Ole Schwen, Uta Dahmen, Henning Höfener, Yan Gao, Steven Dooley, Andrea Schenk
BACKGROUND: Automated image analysis enables quantitative measurement of steatosis in histological images. However, spatial heterogeneity of steatosis can make quantitative steatosis scores unreliable. To improve the reliability, we have developed novel scores that are "focused" on steatotic tissue areas. METHODS: Focused scores use concepts of tile-based hotspot analysis in order to compute statistics about steatotic tissue areas in an objective way. We evaluated focused scores on three data sets of images of rodent liver sections exhibiting different amounts of dietary-induced steatosis...
September 20, 2018: Diagnostic Pathology
Andréanne Gagné, Bernard Têtu, Michèle Orain, Stéphane Turcotte, Marie Plante, Jean Grégoire, Marie-Claude Renaud, Isabelle Bairati, Dominique Trudel
It has been highlighted that the original article [1] contained a typesetting mistake in the family name of Dominique Trudel.
September 17, 2018: Diagnostic Pathology
Keiko Segawa, Shintaro Sugita, Tomoyuki Aoyama, Terufumi Kubo, Hiroko Asanuma, Taro Sugawara, Yumika Ito, Mitsuhiro Tsujiwaki, Hiromi Fujita, Makoto Emori, Tadashi Hasegawa
BACKGROUND: Clear cell sarcoma of soft tissue (CCSST) and clear cell sarcoma-like gastrointestinal tumor (CCSLGT) are malignant mesenchymal tumors that share some pathological features, but they also have several different characteristics. They are well known to express chimeric fusions of Ewing sarcoma breakpoint region 1 (EWSR1) and cAMP response element-binding protein (CREB) family members; namely, EWSR1-activating transcription factor 1 (ATF1) and EWSR1-CREB1. In addition, recent studies have suggested the presence of other fusions...
September 15, 2018: Diagnostic Pathology
Katherine Wickenden, Nadia Nawaz, Sami Mamand, Deevia Kotecha, Amy L Wilson, Simon D Wagner, Matthew J Ahearne
BACKGROUND: Abnormally sustained immune reactions drive B-cell proliferation in some cases of marginal zone lymphoma but the CD4+ T-cell subsets, which are likely to contribute to the B-cell responses in the tumour microenvironment, are not well characterised and neither has the spatial distribution of the different subsets in involved lymph nodes been investigated. METHODS: Employing a workflow of multiplex semi-automated immunohistochemistry combined with image processing we investigated association between infiltrating T-cells and proliferating lymphoma B-cells...
September 15, 2018: Diagnostic Pathology
Lemeng Sun, Liangshu Feng, Jiuwei Cui
BACKGROUND: Hepatocellular carcinoma (HCC) is the second leading cause of cancer death in Asia; however, the molecular mechanism in its tumorigenesis remains unclear. Abnormal expression of claudins (CLDNs), a family of tight junction (TJ) proteins, plays an important role in the metastatic phenotype of epithelial-derived tumors by affecting tight junction structure, function and related cellular signaling pathways. In a previous study, we used a tissue chip assay to identify CLDN17 as an upregulated gene in HCC...
September 15, 2018: Diagnostic Pathology
Jian Tan, Jianpeng Hu, Yonghui He, Feilun Cui
This article [1] is retracted at request of the Editor. After publication of this article [1] concerns were raised regarding aspects of the methodology, including the choice of stains being inappropriate or inadequate to answer the research question. A discrepancy was also noted between the number of groups described in the methods and the number of groups presented in some of the figures. Furthermore the western blot images did not entirely correspond with the information reported in the results. For these reasons the conclusions of the study cannot be considered to be supported by the data...
September 12, 2018: Diagnostic Pathology
Xinyu Yang, Haichao Wang, Menmen Zhang, Jin Liu, Ben Lv, Fangping Chen
This article [1] is retracted at request of the Editor.
September 12, 2018: Diagnostic Pathology
Meifeng Zhou, Xiuzhen Tong
This article [1] is retracted at request of the Editor.
September 12, 2018: Diagnostic Pathology
Mark Kriegsmann, Katharina Kriegsmann, Alexander Harms, Rémi Longuespée, Christiane Zgorzelski, Jonas Leichsenring, Thomas Muley, Hauke Winter, Daniel Kazdal, Benjamin Goeppert, Arne Warth
BACKGROUND: Non-small cell lung cancer (NSCLC) and melanoma are frequent entities in routine diagnostics. Whereas the differential diagnosis is usually straight forward based on histomorphology, it can be challenging in poorly differentiated tumors as melanoma may mimic various histological patterns. Distinction of the two entities is of outmost importance as both are treated differently. HMB45 and MelanA are recommended immunohistological markers for melanoma in this scenario. SOX10 has been described as an additional marker for melanoma...
September 11, 2018: Diagnostic Pathology
Hans-Ullrich Völker, Michael Weigel, Annette Strehl, Lea Frey
BACKGROUND: Conventional parameters including Ki67, hormone receptor and Her2/neu status are used for risk stratification for breast cancer. The serine protease urokinase plasminogen activator (uPA) and the plasminogen activator inhibitor type-1 (PAI-1) play an important role in tumour invasion and metastasis. Increased concentrations in tumour tissue are associated with more aggressive potential of the disease. Multigene tests provide detailed insights into tumour biology by simultaneously testing several prognostically relevant genes...
August 31, 2018: Diagnostic Pathology
Miao Ruan, Tian Tian, Jia Rao, Xiaoli Xu, Baohua Yu, Wentao Yang, Ruohong Shui
BACKGROUND: Triple-negative breast cancers (TNBCs) are a group of heterogeneous diseases with various morphology, prognosis, and treatment response. Therefore, it is important to identify valuable biomarkers to predict the therapeutic response and prognosis for TNBCs. Tumor-infiltrating lymphocytes (TILs) may have predictive value to pathological complete response (pCR) in neoadjuvant treated TNBCs. However, absence of standardized methodologies for TILs measurement has limited its evaluation and application in practice...
August 31, 2018: Diagnostic Pathology
Essam Ayad, Ahmed Soliman, Shady Elia Anis, Amira Ben Salem, Pengchao Hu, Youhong Dong
BACKGROUND: Breast cancer is by far the most frequent cancer among women. The proliferative index, Ki-67, is more and more taken into consideration for treatment decisions. However, the reliability of the established Ki-67 scoring is limited. Digital pathology is currently suggested to be a potential solution to Ki 67 assessment problems. METHODS: This is a retrospective and prospective study including 100 patients diagnosed with invasive breast cancer. Three senior pathologists have been asked to estimate the Ki-67 proliferative index for each of the 100 cases by examining the whole glass slides on optical microscope and providing a continuous score then a categorical score ('high' and 'low' Ki 67 index) using once 14%, once 20% as threshold indicative of high Ki67 status...
August 28, 2018: Diagnostic Pathology
Lourdes Peña-Jaimes, Irene González-García, María Eugenia Reguero-Callejas, Ignacio Pinilla-Pagnon, Belén Pérez-Mies, Víctor Albarrán-Artahona, Noelia Martínez-Jañez, Juan Manuel Rosa-Rosa, José Palacios
BACKGROUND: Breast carcinoma with osteoclast-like giant cells (OGCs) is infrequent, being most reported cased described as ductal invasive carcinomas. Invasive pleomorphic lobular carcinoma (PLC) is a distinct morphological variant of invasive lobular carcinoma characterized by higher nuclear atypia and pleomorphism than the classical type. In the best of our knowledge, a PLC with OGCs has not been previously reported. CASE PRESENTATION: We report the case of a 72-year-old woman presenting with a pleomorphic tumor of the left breast with a dense infiltration by OGCs and T lymphocytes with a 10:1 predominance of CD8+ over CD4+ cells...
August 28, 2018: Diagnostic Pathology
Cleo-Aron Weis, Jakob Nikolas Kather, Susanne Melchers, Hanaa Al-Ahmdi, Marion J Pollheimer, Cord Langner, Timo Gaiser
BACKGROUND: Tumor budding, meaning a detachment of tumor cells at the invasion front of colorectal carcinoma (CRC) into single cells or clusters (<=5 tumor cells), has been shown to correlate to an inferior clinical outcome by several independent studies. Therefore, it has been discussed as a complementary prognostic factor to the TNM staging system, and it is already included in national guidelines as an additional prognostic parameter. However, its application by manual evaluation in routine pathology is hampered due to the use of several slightly different assessment systems, a time-consuming manual counting process and a high inter-observer variability...
August 28, 2018: Diagnostic Pathology
Nozomu Kurose, Manabu Yamashita, Mariko Nakano, Xin Guo, Akihiro Shioya, Satoko Nakada, Hiroshi Minato, Sohsuke Yamada
BACKGROUND: Pilomatricoma is a relatively common benign cutaneous adnexal neoplasm with differentiation towards the hair matrix, inner sheath of hair follicle and hair cortex. Proliferating pilomatricoma is a rare variant of pilomatricoma that can rapidly increase and may be misidentified as a malignant tumor. We herein report the cytopathological findings of proliferating pilomatricoma misdiagnosed as a malignant parotid tumor. CASE PRESENTATION: A 64-year-old man noticed an acne-like nodule in the left parotid region...
August 28, 2018: Diagnostic Pathology
Zhan-Yan Pan, Jia Chen, Qiong Wu, Ting-Ting Hu, Lingyi Lu, Qiang Ju
BACKGROUND: In vitro studies showed that the aryl hydrocarbon receptor (AHR) contributed to the development of cutaneous squamous cell carcinomas, but supporting clinical data are lacking. METHODS: Immunohistochemical analysis was used to detect the expression of AHR, CYP1A1, EGFR, and Ki-67 in 10 actinic keratosis (AK) cases, 10 Bowen disease (BD) cases, 20 cutaneous squamous cell carcinoma (cSCC) cases and 20 normal skin samples. H-scores were used to assess the immunoreactivity...
August 25, 2018: Diagnostic Pathology
Jing Chang, Qing Chen, Yuan Jian, Ping Wei, Guang-Zhong Yang, Ying Wang, Xiang-Yang Fang, Qian-Mei Sun
BACKGROUND: Although the primary malignant spleen tumor is relatively rare, lymphoma is the most common splenic malignancy. It can have quite different clinical manifestations that usually lead to relatively poor outcomes, and thus early and accurate diagnosis are of utmost importance. CASE PRESENTATION: The present study reports a case of a 67-year-old female with high fever, abnormal spleen (diagnosed by PET/CT) and no obvious lymph node enlargement. After being subjected to splenectomy, the patient was diagnosed with splenic diffuse large B cell lymphoma coexisting with gastrointestinal stromal tumor in the stomach...
August 25, 2018: Diagnostic Pathology
Hayriye Tatli Dogan, Merve Kiran, Burak Bilgin, Aydan Kiliçarslan, Mehmet Ali Nahit Sendur, Bülent Yalçin, Arslan Ardiçoglu, Ali Fuat Atmaca, Berrak Gumuskaya
BACKGROUND: Clear cell renal cell carcinoma (ccRCC) is the most common renal malignancy. Hypoxia-inducible factors, HIF-1α and HIF-2α, are expressed in the majority of ccRCC. Targeting immune checkpoints with the blockade of PD-1 and its ligand PD-L1 reorganizes T-cell activity in tumor microenvironment and provides important antitumor responses. PD-L1 upregulation has been found to be hypoxia-inducible factor (HIF) dependent. Our aim is to demonstrate the association between PD-L1 and HIF expression and to reveal the role of PD-L1 in prognosis and its association with tumor microenvironment...
August 25, 2018: Diagnostic Pathology
Emmanuel Rivkine, Léa Marciano, Claude Polliand, Antonio Valenti, Marianne Ziol, Christophe Poncelet, Christophe Barrat
After publication of this work [1], the authors noticed that the first names and last names of all the authors were inverted. In the original manuscript, they appear on PubMed as.
August 24, 2018: Diagnostic Pathology
Andréanne Gagné, Bernard Têtu, Michèle Orain, Stéphane Turcotte, Marie Plante, Jean Grégoire, Marie-Claude Renaud, Isabelle Bairati, Dominique Trudel
BACKGROUND: The expression of high temperature requirement factor A1 (Htra1) has been reported to be decreased in ovarian carcinoma, but its prognostic effect remains undetermined. METHODS: We evaluated the impact of HtrA1 downregulation in tumoral tissues on cancer progression and death in women with serous ovarian carcinoma. HtrA1 staining was performed on tissue microarrays (TMA) comprised of tumor samples from a cohort of 106 women who were diagnosed with primary high-grade serous ovarian carcinoma and receiving standard treatment at the Québec University Hospital between 1993 and 2006...
August 21, 2018: Diagnostic Pathology
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