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Mamta Gupta, Anna Laury, Marisa R Nucci, Bradley J Quade
AIMS: Current WHO classification defines smooth muscle tumors of uncertain malignant potential (STUMP) as neoplasms that cannot be diagnosed reliably as benign or malignant using generally accepted criteria. This has led to application of various criteria sets; consequently, consistent and reliable outcome data is lacking. The aims of this study were: 1) to compare the frequency of adverse outcome in STUMP based on enhanced criteria; and 2) to perform failure analysis to identify feature(s) helpful in predicting outcome...
March 14, 2018: Histopathology
Guillaume Bataillon, Laetitia Fuhrmann, Elodie Girard, Emanuelle Menet, Marick Laé, Mathieu Capovilla, Isabelle Treilleux, Laurent Arnould, Frederique Penault-Llorca, Roman Rouzier, Caterina Marchiò, Ivan Bieche, Anne Vincent-Salomon
Low-grade adenosquamous carcinoma of the breast (LGASC) is a rare variant of metaplastic carcinoma characterized by a favorable outcome and histologically composed of glandular and squamous elements in a spindle cell background typically associated with a lymphocytic stromal reaction. Due to its rarity, the immunophenoptypical and genetic profile LGASC has not been sufficiently characterized. The aim of this study was to gain insight into the molecular and phenotypic characteristics of LGASC. We reviewed the clinical, morphological features and detailed the immunohistochemical characteristics of a retrospective series of 13 LGASCs...
March 14, 2018: Histopathology
Kyoko Otani, Dai Inoue, Tomoo Itoh, Yoh Zen
AIMS: The diagnosis of IgG4-related disease (IgG4-RD) requires a multidisciplinary approach, in which histology plays an important role. Although a diagnosis was previously established using surgically resected specimens, there is increasing clinical demand to diagnose this systemic condition by biopsies. The present study aimed to elucidate how useful transbronchial lung biopsies (TBLBs) are for this diagnostic purpose. METHODS AND RESULTS: The study cohort consisted of 20 consecutive patients diagnosed with IgG4-RD in other organs who underwent TBLBs for potential pulmonary involvement...
March 11, 2018: Histopathology
Michelle Moore, Adam Boyde, Gareth L Rowlands, W Glenn McCluggage
Uterine tumour resembling ovarian sex cord tumour (UTROSCT) is an uncommon mesenchymal neoplasm which morphologically resembles and expresses markers of ovarian sex cord-stromal tumours (1,2). It has an uncertain histogenesis and this is reflected in the 2014 World Health Organization (WHO) Classification of tumours of the female reproductive organs where it is included in the category of miscellaneous uterine neoplasms (3). This article is protected by copyright. All rights reserved.
March 11, 2018: Histopathology
Thomas Scholzen, Christiane Gerlach, Giorgio Cattoretti
In July 2016 Johannes Gerdes passed away, 25 years after the Journal of Pathology published a groundbreaking paper on Ki-67. The manuscript has been quoted nearly 1400 times since then.Thomas Scholzen, Christiane Gerlach and Giorgio Cattoretti, former coworkers, collaborators and friends of Hannes present a reconstruction of the scientific ambience of the field in the world and in their labs, anecdoctes of the discovery and a very brief summary of published and unpublished research on Ki-67 as a tribute to Hannes Gerdes...
March 11, 2018: Histopathology
Erika Hissong, Jose Jessurun, Rhonda K Yantiss
AIMS: Most gastric carcinomas develop in association with mucosal atrophy and hypochlorhydria, whereas benign peptic ulcers are acid-related. Given that acid sterilizes gastric contents, we hypothesized that ulcerated gastric cancers may be associated with increased luminal microbes compared with peptic ulcers, and that this feature may represent a helpful diagnostic clue to the presence of malignancy. We performed this study to determine whether features of luminal debris, including microorganisms, from ulcerated gastric cancers were significantly different from those of debris associated with benign ulcers...
March 8, 2018: Histopathology
Zhen Yan, James P Grenert, Nancy M Joseph, Chuanli Xu, Xin Chen, Nafis Shafizadeh, Sanjay Kakar
AIMS: Hepatic angiomyolipoma (AML) often shows epithelioid morphology with inconspicuous fat. Epithelioid component can mimic hepatocellular adenoma (HCA) or carcinoma (HCC). The aims were to examine the expression of commonly used markers for HCA or HCC in hepatic AML, and highlight pitfalls in diagnosis. METHODS AND RESULTS: Resected hepatic AML (n=16) were reviewed; reticulin stain, immunohistochemistry for GS, β-catenin, LFABP were performed along with Sanger sequencing of exon 3 of CTNNB1 and next generation sequencing (NGS)...
March 7, 2018: Histopathology
Joris P Bulte, Altuna Halilovic, Shona Kalkman, Patricia H J van Cleef, Paul J van Diest, Luc J A Strobbe, Johannes H W de Wilt, Peter Bult
AIMS: To establish whether core needle biopsy (CNB) specimens processed with an accelerated processing method with short fixation time can be used to accurately determine HER2 status of breast cancer. METHODS AND RESULTS: A consecutive case series from two high volume breast clinics was created. We compared routine HER2 immunohistochemistry (IHC) assessment between accelerated processing CNB specimens and routinely processed postoperative excision specimens. Additional amplification-based testing was performed in cases with equivocal results...
March 1, 2018: Histopathology
Eva Karamitopoulou, Martin Wartenberg, Inti Zlobec, Silvia Cibin, Mathias Worni, Beat Gloor, Alessandro Lugli
BACKGROUND: Pancreatic ductal adenocarcinoma (PDAC) is a highly lethal malignancy with rising incidence. Biomarkers that would help the prognostic stratification of patients are urgently needed. Although tumour budding (BD) is a strong and independent prognostic factor in PDAC, is not included in histopathology reports, partly due to lack of standardized scoring system. AIM: Aim of the present work is to assess the reliability and reproducibility of the BD scoring system recently proposed by the International Tumour Budding Concensus Conference (ITBCC) 2016, in a well-characterized PDAC-cohort (n=120) with complete clinico-pathological and follow-up information...
March 1, 2018: Histopathology
Naohiro Makise, Masaya Sekimizu, Takashi Kubo, Susumu Wakai, Shun-Ichi Watanabe, Tomoyasu Kato, Takayuki Kinoshita, Nobuyoshi Hiraoka, Masashi Fukayama, Akira Kawai, Hitoshi Ichikawa, Akihiko Yoshida
AIMS: Extraskeletal osteosarcoma (ESOS) is a sarcoma in the non-skeletal tissue that directly produces neoplastic osteoid or bone. Dedifferentiated liposarcoma (DDLPS) and malignant peripheral nerve sheath tumor (MPNST) are the two most common types of sarcoma that can harbor heterologous osteosarcomatous differentiation. We aimed to determine the potential relationship of ESOS to DDLPS and MPNST. METHODS AND RESULTS: We investigated MDM2 and H3K27me3 status in 19 cases of ESOS, 2 of which contained a low-grade component...
February 28, 2018: Histopathology
Pallavi A Patil, Andrew M Blakely, Kara A Lombardo, Jason T Machan, Thomas J Miner, Li-Juan Wang, Alexander S Marwaha, Andres Matoso
INTRODUCTION: The tumor microenvironment is increasingly important in several tumors. We studied the relationship of key players of immune microenvironment with clinicopathological parameters in gastric adenocarcinomas. METHODS: Tissue microarrays were constructed from gastrectomy specimens, 2004-2013. Immunohistochemistry was performed for programmed death ligand 1 (PD-L1), indoleamine 2,3-dioxygenase (IDO), tryptophanyl-tRNA synthetase (WARS), guanylate-binding protein 5 (GBP5), tumor-infiltrating lymphocytes (TIL) expressing CD3/CD8/FoxP3/PD1, and mismatch repair proteins (MMRs) MLH1, PMS2, MSH2 and MSH6...
February 28, 2018: Histopathology
Mitra Mehrad, Somak Roy, William A LaFramboise, Patti Petrosko, Caitlyn Miller, Pimpin Incharoen, Sanja Dacic
Pulmonary Sarcomatoid Carcinoma (PSC) is a poorly-differentiated non-small cell lung carcinoma (NSCLC) with aggressive behavior. This study aimed to evaluate the prognostic clinicopathologic and genetic characteristics of PSCs. Fifty-three cases of surgically treated PSCs were selected, of which 23 were subjected to mutation and copy number variation analysis using 50-gene Ion AmpliSeq Cancer Panel. Majority of the patients were male (32/53, 60.3%) and smoker (51/53, 96.2%). Overall, 25 (47.1%) patients died within 2 to 105 months (mean 22...
February 28, 2018: Histopathology
Serena Wong, Elena Ratner, Natalia Buza
AIMS: Prophylactic total hysterectomy (TH) and bilateral salpingo-oophorectomy (BSO) have become routine procedures in women at genetic risk for gynecologic malignancies. Intraoperative pathology diagnosis of an occult malignancy provides the opportunity for immediate surgical staging and helps avoiding a second surgery. However, no standard guidelines exist for optimal intraoperative evaluation (IOE) of these specimens. We performed a retrospective analysis of prophylactic TH and BSO cases to assess the presence of gross findings, frozen and permanent section sampling practices, frozen section diagnoses and diagnostic discrepancies...
February 26, 2018: Histopathology
James Isom, May R Arroyo, Deepa Reddy, Priti Joshi-Guske, Samer Z Al-Quran, Ying Li, Robert W Allan
NK-cell enteropathy is a recently described clinically indolent condition characterized by atypical NK-cell infiltrates in the gastrointestinal mucosa that mimics malignant lymphoma. We report the case of a 69-year-old female who clinically had long-standing abdominal pain and recurrent mucosal ulcerations associated with atypical NK-cell infiltrates. The clinical, morphologic, and immunophenotypic findings in this case were diagnostic of NK-cell enteropathy. Review of the patient's prior biopsies demonstrated that this persisted without clinical progression for ten years-confirming the clinical indolent course...
February 23, 2018: Histopathology
Magda Zanelli, Maxwell Smith, Maria Cecilia Mengoli, Lucia Spaggiari, Loredana De Marco, Filippo Lococo, Francesco Puma, Stefano Ascani
Erdheim Chester disease represents a clonal systemic proliferation of histiocytes. Bone is the most common site of involvement, although virtually any organ, including lungs, can be affected. The diagnosis of Erdheim Chester disease can be difficult due to its rarity and protean presentation. The correlation between clinical, radiological and histological findings is mandatory for the identification of the disease. Foamy histiocytes, lacking Langerhans cells markers, represent the typical histological findings, although their absence does not rule out Erdheim Chester disease...
February 22, 2018: Histopathology
Naoki Nakajima, Akihiko Yoshizawa, Tomoyuki Nakajima, Masahiro Hirata, Ayako Furuhata, Shinji Sumiyoshi, Mariyo Rokutan-Kurata, Makoto Sonobe, Toshi Menju, Ei Miyamoto, Toyofumi F Chen-Yoshikawa, Hiroshi Date, Hironori Haga
AIMS: GATA6 is known to play a role in lung development. However, its role in the carcinogenesis of lung cancer is not well studied. The aim of this study was to analyze GATA6 expression in lung adenocarcinomas (LA) by immunohistochemistry (IHC) to define its association with clinicopathological characteristics. METHODS AND RESULTS: IHC analysis of GATA6 was performed using tissue microarray slides containing 348 LAs. The association between GATA6 expression and clinicopathological parameters was evaluated...
February 22, 2018: Histopathology
Melanie Boxberg, Carolin Götz, Selgai Haidari, Christiane Dorfner, Moritz Jesinghaus, Enken Drecoll, Marko Boskov, Klaus Dietrich Wolff, Wilko Weichert, Bernhard Haller, Andreas Kolk
OBJECTIVES: Oral squamous cell carcinoma (OSCC) is characterized by its variable clinical course. In addition to the routinely used TNM/UICC systems, patient-specific prognostic/predictive biomarkers are needed. Promising biomarkers include the determination of the cancer stem cell (CSC) compartment, which can be identified by CD44 expression (amongst others). MATERIALS AND METHODS: A well-characterized cohort of 108 therapy-naïve OSCC with complete long-term follow-up and matched lymph node metastases were evaluated for CD44 expression by immunohistochemistry...
February 22, 2018: Histopathology
Yasunori Enomoto, Sayomi Matsushima, Shiori Meguro, Hideya Kawasaki, Isao Kosugi, Tomoyuki Fujisawa, Noriyuki Enomoto, Naoki Inui, Yutaro Nakamura, Takafumi Suda, Toshihide Iwashita
Pathologic differential diagnoses of pleuroparenchymal fibroelastosis (PPFE) include usual interstitial pneumonia (UIP) and pulmonary apical cap (PAC); however, there are no specific immunostaining makers to distinguish between these diseases. We performed immunohistochemistry using several pleural mesothelial cell-related markers, including cytokeratin-5/6, CAM5.2, WT-1, calretinin, desmin and podoplanin, for PPFE (n = 4), UIP (n = 10) and PAC (n = 3) lung sections. Among the examined markers, in PPFE and PAC lungs, podoplanin commonly showed positivity for spindle cells both in thickened pleura and subpleural fibroelastosis lesions; these cells were also stained with α-smooth muscle actin, a marker of myofibroblasts...
February 22, 2018: Histopathology
Ashwini Raghavendra, Priyakshi Kalita-de Croft, Ana Cristina Vargas, Chanel E Smart, Peter T Simpson, Jodi M Saunus, Sunil R Lakhani
AIMS: A better understanding of the expression of cancer testis antigens (CTA) in breast cancer might identify new immunotherapy options, especially for triple-negative (TN) tumours, which lack expression of conventional therapeutic targets ER, PR and HER2 (receptors for Oestrogen, Progesterone and Human epidermal growth factor). The aim of this study was to quantify the expression of MAGE-A and NY-ESO-1 CTAs in breast cancer, and relate this to known clinicopathologic parameters. METHODS AND RESULTS: We surveyed MAGE-A and NY-ESO-1 protein expression in an unselected cohort of 367 breast tumours (out of which 65 tumours were TN), with accompanying clinical follow-up data, using immunohistochemistry (IHC) analysis of tissue microarrays...
February 21, 2018: Histopathology
Nasser Davarzani, Gordon G A Hutchins, Nicholas P West, Lindsay C Hewitt, Mathew Nankivell, David Cunningham, William H Allum, Elizabeth Smyth, Nicola Valeri, Ruth E Langley, Heike I Grabsch
AIMS: Neoadjuvant chemotherapy (NAC) remains an important therapeutic option for advanced oesophageal cancer (OC). Pathological tumour regression grade (TRG) may offer additional information by directing adjuvant treatment and/or follow-up but clinical value remains unclear. We analysed the prognostic value of TRG and associated pathological factors in OC patients enrolled in the Medical Research Council OE02 trial. METHODS: Histopathology was reviewed in 497 resections from OE02 trial participants randomised to surgery (S-group;n=244) or NAC followed by surgery (CS-group;n=253)...
February 21, 2018: Histopathology
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