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Histopathology

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https://www.readbyqxmd.com/read/28914967/chemotherapy-response-score-is-a-useful-histological-predictor-of-prognosis-in-high-grade-serous-carcinoma
#1
Authors Priya Singh, Vikrant Kaushal, Bhavana Rai, Arvind Rajwanshi, Nalini Gupta, Pranab Dey, Rashi Garg, Manish Rohilla, Vanita Suri, Sushmita Ghoshal, Radhika Srinivasan
AIM: High grade serous carcinoma (HGSC) is the most common tubal/ovarian malignant tumor usually presenting in advance stage. Interval debulking surgery (IDS) post neoadjuvant chemotherapy (NACT) has been increasingly in use for the management of these patients. Chemotherapy response score (CRS) has been proposed for grading response of tubo-ovarian HGSC to NACT on the basis of examination of IDS specimens. Our aim was to evaluate CRS in post NACT cases, assess the interobserver agreement and correlate it to overall and progression- free survival...
September 15, 2017: Histopathology
https://www.readbyqxmd.com/read/28914964/clinicopathological-and-molecular-implications-of-aberrant-ttf-1-expression-in-colorectal-carcinomas-an-immunohistochemical-analysis-of-1-319-cases-using-three-different-antibody-clones
#2
Jeong Mo Bae, Jung Ho Kim, Jeong Hwan Park, Hye Eun Park, Nam-Yun Cho, Gyeong Hoon Kang
AIMS: The precise profile of aberrant expression of thyroid transcription factor-1 (TTF-1) according to antibody clones in colorectal carcinomas (CRCs) has been controversial. Moreover, the detailed clinicopathological and molecular features of CRCs with TTF-1 expression have rarely been investigated. Here, we evaluated the TTF-1 expression status in a large series of CRC cases using three different antibody clones. METHODS AND RESULTS: Immunohistochemistry for TTF-1 using clones 8G7G3/1, SPT24, and SP141 was performed on tumour tissues of 1,319 primary CRCs and 98 corresponding metastatic lesions...
September 15, 2017: Histopathology
https://www.readbyqxmd.com/read/28898463/update-on-the-potential-significance-of-psammoma-bodies-in-lung-adenocarcinoma-from-a-modern-aspect
#3
Akio Miyake, Koji Okudela, Mai Matsumura, Hideaki Mitsui, Hiromasa Arai, Shigeaki Umeda, Shoji Yamanaka, Yoshihiro Ishikawa, Michihiko Tajiri, Kenichi Ohashi
AIMS: Psammoma bodies are concentrically lamellated microscopic structures of calcium. They are commonly observed in papillary carcinomas of the thyroid gland and serous papillary adenocarcinomas of the ovary, but are also occasionally detected in lung adenocarcinomas. Only one study has ever been published in 1972, which systematically described the significance of psammoma bodies in lung adenocarcinomas. We herein updated the significance of psammoma bodies in lung adenocarcinomas from a modern aspect...
September 12, 2017: Histopathology
https://www.readbyqxmd.com/read/28898449/in-reply-to-hynes-et%C3%A2-al-back-to-the-future-routine-morphological-assessment-of-the-tumour-microenvironment-is-prognostic-in-stage-ii-iii-colon-cancer-in-a-large-population-based-study
#4
LETTER
Gabi W van Pelt, Anouck Huijbers, Rob Eam Tollenaar, Wilma E Mesker
In their recent paper (1) , Hynes et al. described the use of morphological features of the tumour microenvironment on H&E stained tissue sections for routine assessment of prognosis in stage II/III colon cancer patients. One of these features is the tumour stromal percentage (TSP), which was described by our group in 2007(2) . Although we appreciate the fact that this method is widely used and validated, unfortunately Hynes and colleagues misinterpreted the method described by Mesker et al. This article is protected by copyright...
September 12, 2017: Histopathology
https://www.readbyqxmd.com/read/28898443/re-evaluation-of-33-unclassified-eosinophilic-renal-cell-carcinomas-in-young-patients
#5
Yunjie Li, Victor E Reuter, Andres Matoso, George J Netto, Jonathan I Epstein, Pedram Argani
AIMS: We sought to determine if some unclassified renal cell carcinomas (RCCs) in children and young adults that are characterized by predominantly eosinophilic cytoplasm are related to the recently described succinate dehydrogenase (SDH)-deficient RCC, fumarate hydratase (FH)-deficient RCC, or eosinophilic solid and cystic (ESC) RCC. METHODS AND RESULTS: We reviewed 33 unclassified RCCs with predominantly eosinophilic cytoplasm in patients age 35 years or younger...
September 12, 2017: Histopathology
https://www.readbyqxmd.com/read/28889523/the-epithelioid-bap1-negative-and-p16-positive-phenotype-predicts-prolonged-survival-in-pleural-mesothelioma
#6
Angela Chou, Christopher W Toon, Adele Clarkson, Amy Sheen, Loretta Sioson, Anthony J Gill
AIMS: Mesothelioma is a relatively uncommon but highly malignant neoplasm. Most patients die of disease within one year of diagnosis, but some have prolonged survival. Prospective identification of these longer-term survivors may help guide treatment. We therefore sought to investigate the role of p16 immunohistochemistry (IHC) both alone and in combination with other markers as a potential predictor of prolonged survival in mesothelioma. METHODS AND RESULTS: P16 IHC was performed on unselected pleural mesotheliomas biopsied from 1991 to 2014...
September 10, 2017: Histopathology
https://www.readbyqxmd.com/read/28889407/mucinous-adenocarcinoma-with-lepidic-pattern-and-with-k-ras-mutation-in-a-newborn-with-antenatal-diagnosis-of-congenital-pulmonary-airway-malformation
#7
LETTER
Olivier Stephanov, Yohan Robert, Florence De Fraipont, Christian Piolat, Hervé Sartelet
Olivier Stephanov: substantial contributions to conception and design, acquisition of data, and analysis and interpretation of data; drafting the article and revising it critically for important intellectual content; final approval of the version to be published. Yohan Robert : substantial contributions to acquisition of data and analysis and interpretation of data; final approval of the version to be published. Florence De Fraipont substantial contributions to acquisition of data, and analysis and interpretation of data; revising it critically for important intellectual content; final approval of the version to be published...
September 10, 2017: Histopathology
https://www.readbyqxmd.com/read/28888040/phenotypic-variation-of-an-alk-positive-large-cell-neuroendocrine-lung-carcinoma-with-carcinoid-morphology-during-treatment-with-alk-inhibitors
#8
LETTER
Delphine Hoton, Yves Humblet, Louis Libbrecht
Rearrangement of the ALK gene and overexpression of ALK seems to occur very rarely in neuroendocrine lung tumors, with only 3 cases of atypical carcinoid and 1 large cell neuroendocrine carcinoma (LCNEC) reported in detail until now.(1,2,3,4) Here, we report a case of an ALK-positive neuroendocrine lung tumor showing a variable phenotype during the course of treatment. A pulmonary lesion with mediastinal adenopathies was detected in a 69-year-old, non-smoking female of Turkish origin during work-up for back pain...
September 9, 2017: Histopathology
https://www.readbyqxmd.com/read/28881050/pulmonary-sclerosing-pneumocytoma-remains-a-diagnostic-challenge-using-frozen-sections-a-clinicopathological-analysis-of-59-cases
#9
Cheng-Han Yang, Li-Yu Lee
AIMS: Using intraoperative frozen sections to diagnose pulmonary sclerosing pneumocytoma is always challenging. However, an accurate diagnosis is needed to guide surgical management and prevent unnecessary treatment. The aim of this study was to investigate the most frequently misdiagnosed histological patterns and evaluate the potential diagnostic pitfalls of using frozen sections. METHODS AND RESULTS: We retrospectively reviewed 59 cases of sclerosing pneumocytoma that underwent an intraoperative frozen section examination...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28881049/classical-gonadoblastoma-its-relationship-to-the-dissecting-variant-and-undifferentiated-gonadal-tissue
#10
REVIEW
Lawrence M Roth, Liang Cheng
Classical gonadoblastoma occurs almost entirely in the dysgenetic gonads of an individual who has a disorder of sex development. Approximately 40% of such neoplasms are bilateral. Almost all gonadoblastomas occur in patients who have a Y chromosome or part thereof; testis specific protein Y-encoded 1 (TSPY1) is the putative gene. If a gonad in a patient who has a disorder of sex development contains germ cells with delayed maturation and also harbors the TSPY1 gene, the cells can undergo transformation to classical gonadoblastoma...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28881048/a-novel-technique-for-biobanking-of-large-sections-of-radical-prostatectomy-specimens
#11
Claes Lindh, Brett Delahunt, Hemamali Samaratunga, John Yaxley, Jóna Gudjónsdóttir, Mark Clements, Johan Lindberg, Lars Egevad
AIMS: Harvesting of unfixed tissue from radical prostatectomy specimens for research purposes is challenging. Many prostate cancers cannot be identified at gross inspection and this tumour is notoriously multifocal and heterogeneous. We aimed to develop a technique to allow detailed topographic analysis and the sampling of sufficient amount of tumour without jeopardizing clinical reporting. METHODS AND RESULTS: A custom-made double-bladed knife was utilized for cutting a 4 mm thick horizontal section of the prostate...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28881047/podoplanin-expression-in-cancer-associated-fibroblasts-predicts-unfavourable-prognosis-in-patients-with-pathological-stage-ia-lung-adenocarcinoma
#12
Yasuaki Kubouchi, Yohei Yurugi, Makoto Wakahara, Tomohiko Sakabe, Tomohiro Haruki, Kanae Nosaka, Ken Miwa, Kunio Araki, Yuji Taniguchi, Tatsushi Shiomi, Hiroshige Nakamura, Yoshihisa Umekita
AIMS: Podoplanin expression in cancer-associated fibroblasts (CAFs) has been proposed as an unfavourable indicator in squamous cell carcinoma of the lung, but little is known about its clinical significance in early-stage lung adenocarcinoma. We evaluated the prognostic impact of podoplanin expression in patients with pathological stage (p-stage) IA lung adenocarcinoma as categorized by the 8(th) edition of the tumour-node-metastasis classification for lung cancer. METHODS AND RESULTS: Immunohistochemical analyses using anti-podoplanin antibody were performed on resected specimens from 158 patients with p-stage IA lung adenocarcinoma...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28881045/diagnostic-accuracy-of-immunofluorescence-versus-immunoperoxidase-staining-to-distinguish-immune-complex-mediated-glomerulonephritis-and-c3-dominant-glomerulopathy
#13
Yassine Bouatou, Jesper Kers, Marie S N Chevalier-Florquin, Nike Claessen, Tri Q Nguyen, Jeffrey Damman, Henrique Proença, Joris J T H Roelofs, Sandrine Florquin
AIMS: Membranoproliferative glomerulonephritis (MPGN) has been reclassified from an electron microscopy to an immunofluorescence (IF) based semi quantitative classification with immunoperoxidase (IP) technique as a backup option when IF is not possible. However, no data are available on the interobserver variability, the correlation and the reclassification of MPGN based on these two techniques. METHODS & RESULTS: We retrospectively analyzed cases of type 1 MPGN...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28881044/from-large-to-small-the-immunohistochemical-panel-in-the-diagnosis-of-early-hepatocellular-carcinoma
#14
Francesco Vasuri, Deborah Malvi, Sonia Bonora, Silvia Fittipaldi, Matteo Renzulli, Francesco Tovoli, Rita Golfieri, Luigi Bolondi, Antonia D'Errico
AIMS: (i) to validate the immunohistochemical (IHC) markers Glutamine Synthetase (GS), Glypican-3 (GPC3), Heat Shock Protein-70 (HSP70) and Enhancer of Zeste homologue 2 (EZH2) on liver biopsy for the differential diagnosis between small HCC and non-neoplastic liver nodules, with special attention on <1 cm nodules; (ii) to assess the actual sensitivity and specificity of the single markers, and their combination, on needle biopsies. METHODS AND RESULTS: One-hundred (100) liver nodules, 66 HCC and 34 non-neoplastic nodules, were prospectively collected from 43 consecutive OLT patients, and subjected to "backtable" needle biopsies directly on surgical specimen...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28881040/comprehensive-histopathologic-comparison-of-epidermotropic-dermal-metastatic-melanoma-and-primary-nodular-melanoma
#15
Stephanie L Skala, David P Arps, Lili Zhao, Kelly B Cha, Min Wang, Paul W Harms, Aleodor A Andea, Douglas R Fullen, May P Chan
AIMS: Metastatic melanoma involving the epidermis and/or upper dermis may show significant histologic overlap with primary cutaneous melanoma, especially the nodular subtype. Proper histopathologic classification is crucial to appropriate staging and management, yet often challenging. This study aims to identify helpful histopathologic features in differentiating epidermotropic/dermal metastatic melanoma (EDMM) and primary nodular melanoma (PNM). METHODS AND RESULTS: A cohort of EDMM (n=74) and PNM (n=75) was retrospectively reviewed for various histopathologic features, and the data were compared between groups by univariate analysis...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28873240/gastric-poorly-cohesive-carcinoma-a-correlative-study-of-mutational-signatures-and-prognostic-significance-based-on-histopathologic-subtypes
#16
Chae Hwa Kwon, Young Keum Kim, Sojeong Lee, Ahrong Kim, Hye Ji Park, Yuri Choi, Yeo Jin Won, Do Youn Park, Gregory Y Lauwers
AIMS: Genome-wide next-generation sequencing has revealed several driver mutations and allows establishing a molecular taxonomy of gastric cancer. However, correlation between the broad mutational spectrum of gastric cancer and its various clinicopathological characteristics has yet to be fully elucidated. METHODS AND RESULTS: Herein, we analyzed the mutational pattern of 77 genes in a cohort of 91 patients with poorly cohesive carcinoma using targeted sequencing and evaluated the clinicopathological significance of the various mutations based its histologic pattern, either signet ring cell (SRC) or other types of poorly cohesive carcinoma (not otherwise specified) (PCC-NOS)...
September 5, 2017: Histopathology
https://www.readbyqxmd.com/read/28871595/role-of-immune-microenvironment-in-gastrointestinal-stromal-tumors
#17
Andrew M Blakely, Andres Matoso, Pallavi A Patil, Ross Taliano, Jason T Machan, Thomas J Miner, Kara A Lombardo, Murray B Resnick, Li-Juan Wang
INTRODUCTION: The immune microenvironment is a prognostic factor for various malignancies. The significance of key players of this immune microenvironment including tumor-infiltrating lymphocytes and expression of programmed death-ligand 1 (PD-L1), indoleamine-2,3-dioxygenase (IDO), and tryptophanyl-tRNA synthetase (WARS) in gastrointestinal stromal tumors (GISTs) is largely unknown. METHODS: Tissue microarrays were constructed from pathology files, 1996-2016. Immunohistochemistry for PD-L1, IDO, WARS was correlated with tumor size, mitoses, and outcomes...
September 4, 2017: Histopathology
https://www.readbyqxmd.com/read/28858401/histopathology-of-middle-east-respiratory-syndrome-coronovirus-mers-cov-infection-clinicopathological-and-ultrastructural-study
#18
Khaled O Alsaad, Ali H Hajeer, Mohammed Al Balwi, Mohammed Al Moaiqel, Nourah Al Oudah, Abdulaziz Al Ajlan, Sameera AlJohani, Sami Alsolamy, Giamal E Gmati, Hanan Balkhy, Hamdan H Al-Jahdali, Salim A Baharoon, Yaseen M Arabi
AIMS: The pathogenesis, viral localization and histopathological features of Middle East Respiratory Syndrome - Coronavirus (MERS-CoV) in human are not sufficiently described. The aims of this study were to explore and define the spectrum of histological and ultrastructural pathological changes affecting various organs in a patient with MERS-CoV infection and represent a base of MERS-CoV histopathology. METHODS AND RESULTS: We analyzed the postmortem histopathological findings and investigated viral particles localization in the pulmonary and extra-pulmonary tissue by transmission electron microscopic examination in a 33-year-old male patient of T-cell lymphoma, who acquired MERS-CoV infection...
August 31, 2017: Histopathology
https://www.readbyqxmd.com/read/28858396/histopathological-and-genetic-review-of-phosphaturic-mesenchymal-tumours-mixed-connective-tissue-variant
#19
Yuichi Yamada, Izumi Kinoshita, Kenichi Kohashi, Hidetaka Yamamoto, Takeshi Iwasaki, Hiroshi Otsuka, Masato Yoshimoto, Shin Ishihara, Yu Toda, Yuki Kuma, Nokitaka Setsu, Yuki Koga, Yumi Honda, Takeshi Inoue, Hiroyuki Yanai, Kyoko Yamashita, Ichiro Ito, Mitsuru Takahashi, Shouichi Ohga, Masutaka Furue, Yasuharu Nakashima, Yoshinao Oda
AIMS: Phosphaturic mesenchymal tumour, mixed connective tissue variant (PMT-MCT), is a tumour of uncertain differentiation, characterised by 'smudgy/grungy' calcification and vitamin D-resistant phosphaturic osteomalacia. FGF23 is recognised as a reliable marker of PMT-MCT, but quantitative evaluation of it has never been performed. We reviewed cases of tumour-associated osteomalacia or histologically definitive PMT-MCT without osteomalacia using histological, immunohistochemical and genetic methods and evaluated the diagnostic significance of these findings...
August 31, 2017: Histopathology
https://www.readbyqxmd.com/read/28858385/pathological-factors-impacting-prognosis-of-resected-liver-metastases-of-colorectal-carcinoma-implications-and-proposal-for-a-pathological-reporting-protocol
#20
REVIEW
Gilton Marques Fonseca, Paulo Herman, Sheila Friedrich Faraj, Jaime Arthur Pirola Kruger, Fabricio Ferreira Coelho, Vagner Birk Jeismann, Ivan Cecconello, Venancio Avancini Ferreira Alves, Timothy M Pawlik, Evandro Sobroza de Mello
Colorectal cancer is a leading cause of death worldwide. The liver is the most common site of distant metastases and surgery is the only potentially curative treatment, although recurrence following surgery is high. In order to define prognosis after surgery, many histopathological features have been identified in the primary tumor. In turn, pathologists routinely report specific findings to guide oncologists about the decision to recommend adjuvant therapy. In general, the pathological report of resected colorectal liver metastases is limited to confirmation of the malignancy and details regarding the margins status...
August 31, 2017: Histopathology
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