keyword
MENU ▼
Read by QxMD icon Read
search

Cutaneous immunohistochemistry

keyword
https://www.readbyqxmd.com/read/28101356/a-case-report-of-primary-cutaneous-natural-killer-t-cell-lymphoma
#1
Chen Tian, Yong Yu, Yizhuo Zhang
Primary cutaneous extranodal natural killer/T-cell lymphoma, nasal type (ENKL-NT) is a relatively rare disease associated with aggressive tumor-cell behavior and poor prognosis. Progress in immunohistochemistry has improved the identification of ENKL-NT. The present case study reported on a 64-year-old female patient presenting with several red nodular lesions on the neck developed over four months. Cutaneous biopsy revealed these cells were positive for CD3, CD56, CD5, CD8 and negative for CD2, CD34, CD7, CD20 and Granzyme B...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28079637/ln2-cd10-and-ezrin-do-not-distinguish-between-atypical-fibroxanthoma-and-undifferentiated-pleomorphic-sarcoma-or-predict-clinical-outcome
#2
Allison Hanlon, Thomas Stasko, Dan Christiansen, Nika Cyrus, Anjela Galan
BACKGROUND: Atypical fibroxanthoma (AFX) is a rare cutaneous spindled cell neoplasm. For both diagnostic and therapeutic purposes, it is important to distinguish AFX from other poorly differentiated tumors, including undifferentiated pleomorphic sarcoma (UPS). OBJECTIVE: The authors aimed to identify the clinical, histologic, and immunohistochemical expression of LN2, ezrin, and CD10 in AFX and UPS tumors. METHODS AND MATERIALS: The authors retrospectively examined the charts of patients with AFX and UPS treated with Mohs micrographic surgery (MMS) at 2 academic institutions...
January 10, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28074480/clonal-reticulohistiocytosis-of-the-skin-and-bone-marrow-associated-with-systemic-mastocytosis-and-acute-myeloid-leukaemia
#3
Nicola Fusco, Arturo Bonometti, Claudia Augello, Sonia Fabris, Leonardo Boiocchi, Stefano Fiori, Denise Morotti, Nicola Fracchiolla, Emilio Berti, Umberto Gianelli
AIMS: The aims of this study were to define whether diffuse cutaneous reticulohistiocytosis could be underpinned by somatic genetic alterations and represent precursor to more aggressive forms of disease. METHODS AND RESULTS: A 59-year-old man with diffuse cutaneous reticulohistiocytosis, experienced bone marrow localisation of the disease, with associated systemic mastocytosis and acute myeloid leukaemia. Cytogenetic analyses of the bone marrow aspirate revealed the presence of a derivative chromosome giving rise to a partial trisomy of chromosome 1q and a partial monosomy of chromosome 9q...
January 11, 2017: Histopathology
https://www.readbyqxmd.com/read/28067962/concurrent-multiple-myeloma-and-mast-cell-neoplasia-in-a-13-year-old-castrated-male-maine-coon-cat
#4
Jonathan M Bagwell, Heather R Herd, Melanie A Breshears, Steven Hodges, Theresa E Rizzi
A 13-year-old, castrated male Maine Coon cat was presented to Oklahoma State University Boren Veterinary Medical Teaching Hospital for yearly echocardiographic examination monitoring hypertrophic cardiomyopathy (HCM) diagnosed in 2003. Physical examination revealed a heart murmur and premature beats, likely related to HCM, but was otherwise unremarkable. A biochemistry profile revealed a hyperglobulinemia (6.3 g/dL). Cytologic examination of fine-needle aspirates from liver and spleen revealed increased numbers of plasma cells and mast cells, confirmed with subsequent histologic examination...
January 9, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28050341/cutaneous-pythiosis-in-calves-an-epidemiologic-pathologic-serologic-and-molecular-characterization
#5
Guilherme Konradt, Daniele Mariath Bassuino, Matheus Viezzer Bianchi, Lismara Castro, Rafaela Albuquerque Caprioli, Saulo Petinatti Pavarini, Janio M Santurio, Maria Isabel Azevedo, Francielli P Jesus, David Driemeier
This study reports the epidemiological, pathological and mycological findings of cutaneous pythiosis in cattle in southern Brazil. 23 calves, that were kept next to a river with extensive marshy regions, presented ulcerated cutaneous lesions in thoracic and pelvic limbs, sometimes extending to the ventral thoracic region. Histopathological examination revealed multifocal pyogranulomas in the superficial and deep dermis. The Grocott-Methenamine silver, immunohistochemistry anti-Pythium insidiosum, ELISA serology and molecular characterization demonstrated the agent P...
December 2016: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/28032662/5-hydroxymethylcytosine-is-a-nuclear-biomarker-to-assess-biological-potential-in-histologically-ambiguous-heavily-pigmented-melanocytic-neoplasms
#6
Jonathan J Lee, Ricardo E Vilain, Scott R Granter, Nina R Hu, Scott C Bresler, Shuyun Xu, Alexander H Frank, Martin C Mihm, Robyn P M Saw, Christopher D Fletcher, Richard A Scolyer, George F Murphy, Christine G Lian
BACKGROUND: 5-hydroxymethylcytosine (5-hmC) is an epigenetic marker detectable through immunohistochemistry (IHC) that has been shown to distinguish benign nevi from melanoma with high sensitivity and specificity. The purpose of the study was to explore its diagnostic utility in a subset of histologically challenging, heavily pigmented cutaneous melanocytic neoplasms. METHODS: 5-hmC IHC was performed on 54 heavily pigmented melanocytic tumors. Semi-quantitative analysis of immunoreactivity was correlated with clinical, pathologic, and follow-up data...
December 29, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28027119/comparison-of-%C3%AE-catenin-and-lef1-immunohistochemical-stains-in-desmoid-type-fibromatosis-and-its-selected-mimickers-with-unexpected-finding-of-lef1-positivity-in-scars
#7
Youran Zou, Yaxia Zhang, James Church, Xiuli Liu
β-catenin immunohistochemical stain can be useful in the diagnosis of many tumors including desmoid-type fibromatosis (DTF). Lymphoid enhancer-factor 1 (LEF1), a recently emerged marker, is part of the Wnt pathway with β-catenin but has not been studied in DTF. We performed LEF1 and β-catenin immunohistochemistry in DTF (n=26), superficial fibromatosis (n=19), sclerosing mesenteritis (n=12), gastrointestinal stromal tumor (n=17), and cutaneous scar (n=14) using tissue microarray and whole sections. The staining intensity was scored as strong (visible at ×2 objective, value of 3), moderate (visible at ×4, value of 2), weak (visible at ×10, value of 1), and negative (not visible at ×10, value of 0)...
December 23, 2016: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28026870/vulvar-and-vaginal-melanoma-a-unique-subclass-of-mucosal-melanoma-based-on-a-comprehensive-molecular-analysis-of-51-cases-compared-with-2253-cases-of-nongynecologic-melanoma
#8
June Y Hou, Caitlin Baptiste, Radhika Bangalore Hombalegowda, Ana I Tergas, Rebecca Feldman, Nathaniel L Jones, Sudeshna Chatterjee-Paer, Ama Bus-Kwolfski, Jason D Wright, William M Burke
BACKGROUND: Optimal treatments for vulvar and vaginal melanomas (VVMs) have not been identified. Herein, the authors compare molecular profiles between VVM and nongynecologic melanoma (NGM) subtypes with the objective of identifying novel, targetable biomarkers. METHODS: In total, 2304 samples of malignant melanoma that were submitted to Caris Life Sciences between 2009 and 2015 were reviewed. In situ hybridization and immunohistochemistry were used to assess copy numbers and protein expression of selected genes...
December 27, 2016: Cancer
https://www.readbyqxmd.com/read/28000306/filaggrin-gene-mutations-and-the-distribution-of-filaggrin-in-oral-mucosa-of-patients-with-oral-lichen-planus-and-healthy-controls
#9
K R Larsen, J D Johansen, J Reibel, C Zachariae, K Rosing, A M L Pedersen
BACKGROUND: Lichen planus (LP) is a chronic inflammatory disease of unknown etiology affecting the skin and oral mucosa. Oral lichenoid lesions (OLL), like oral contact reactions, may resemble oral lichen planus (OLP) both clinically and histopathologically. As OLP and OLL are hyperkeratotic diseases and filaggrin is essential to keratinization the distribution of filaggrin may be altered in these lesions. OBJECTIVES: To investigate if patients with OLP/OLL have 1) altered distribution of filaggrin in the oral mucosa, 2) a higher incidence of mutations in the filaggrin gene (FLG) and 3) active dermatoses, apart from cutaneous LP, than healthy controls; and 4) patients with OLP/OLL and a defect in the FLG have more widespread oral lesions and report more symptoms than OLP/OLL patients without a concomitant defect in the FLG...
December 21, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28000240/epidermal-anti-programmed-cell-death-ligand-1-expression-in-ten-associated-with-nivolumab-therapy
#10
Karina L Vivar, Maria Deschaine, Jane Messina, Jennifer M Divine, Alejandro Rabionet, Nishit Patel, Michael A Harrington, Lucia Seminario-Vidal
BACKGROUND: Nivolumab is an anti-programmed cell death receptor-1 (PD-1) antibody used in the treatment of metastatic or unresectable melanoma. Cutaneous reactions are the most common adverse events reported with these agents and are rarely severe or life-threatening. METHODS: Case report describing the clinicopathological findings of a patient with a fatal toxic epidermal necrolysis (TEN) eruption associated with use of nivolumab for treatment of metastatic melanoma...
December 21, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27997431/attenuation-of-genome-wide-5-methylcytosine-level-is-an-epigenetic-feature-of-cutaneous-malignant-melanomas
#11
Goran Micevic, Nicholas Theodosakis, Janis M Taube, Marcus W Bosenberg, Nemanja Rodić
Epigenetic modification of DNA, namely covalent changes of cytosine residues, plays a key role in the maintenance of inactive chromatin regions, both in health and in disease. In the vast majority of malignant melanomas, the most notable known epigenetic abnormality is the attenuation of 5-hydroxymethylcytosine (5-hmC) residues. However, it remains unknown whether a decrease in 5-hmC represents a primary defect of melanoma cancer epigenome or whether it is secondary to the loss of 5-methylcytosine (5-mC), a chemical substrate for 5-hmC...
December 16, 2016: Melanoma Research
https://www.readbyqxmd.com/read/27995312/prognostic-impact-of-tumour-burden-measured-by-quantitative-real-time-pcr-from-sentinel-lymph-nodes-of-melanoma-patients-data-from-10-year-follow-up
#12
Thomas Kurt Eigentler, Joachim Hinderer, Seema Noor, Claus Garbe, Ulrike Leiter
BACKGROUND: Sentinel node (SN) biopsy is regarded as standard of care for patients (pts) with cutaneous melanoma ≥1.0 mm of thickness. In the recent AJCC classification, findings in the SN are simply classified as positive or negative. In our analyses, we were interested whether quantitative real-time PCR (qRT-PCR) is able to predict disease-free survival (DFS) and overall survival (OS) depending on tumour burden in the SN. METHODS: One hundred and forty-five pts were analysed using qRT-PCR for tyrosinase...
December 19, 2016: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/27992079/expression-of-claudin-11-by-tumor-cells-in-cutaneous-squamous-cell-carcinoma-is-dependent-on-the-activity-of-p38%C3%AE
#13
Liisa Nissinen, Elina Siljamäki, Pilvi Riihilä, Minna Piipponen, Mehdi Farshchian, Atte Kivisaari, Markku Kallajoki, Laura Raiko, Juha Peltonen, Sirkku Peltonen, Veli-Matti Kähäri
The incidence of cutaneous squamous cell carcinoma (cSCC) is rapidly increasing and the prognosis of patients with metastatic disease is poor. There is an emerging need to identify molecular markers for predicting aggressive behavior of cSCC. Here, we have examined the role of tight junction components in the progression of cSCC. The expression pattern of mRNAs for tight junction components was determined with RNA sequencing and oligonucleotide array-based expression analysis from cSCC cell lines (n=8) and normal human epidermal keratinocytes (NHEK, n=5)...
December 19, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27991909/lymphatic-invasion-and-angiotropism-in-primary-cutaneous-melanoma
#14
Andrea P Moy, Lyn M Duncan, Stefan Kraft
Access of melanoma cells to the cutaneous vasculature either via lymphatic invasion or angiotropism is a proposed mechanism for metastasis. Lymphatic invasion is believed to be a mechanism by which melanoma cells can disseminate to regional lymph nodes and to distant sites and may be predictive of adverse outcomes. Although it can be detected on hematoxylin- and eosin-stained sections, sensitivity is markedly improved by immunohistochemistry for lymphatic endothelial cells. Multiple studies have reported a significant association between the presence of lymphatic invasion and sentinel lymph node metastasis and survival...
December 19, 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/27990393/subcutaneous-panniculitis-like-t-cell-lymphoma-with-macrophage-activation-syndrome-treated-by-cyclosporine-and-prednisolone
#15
Dinesh P Asati, Vaibhav Ingle, Deepti Joshi, Anurag Tiwari
Subcutaneous panniculitis-like T-cell lymphoma (SPTCL; α/β T-cell subtype) is a distinct variantof cutaneous T-cell lymphomas, which presents as inflammatory subcutaneous nodules. A 17-year-old male presented with recurrent fever with concomitant facial swelling, pedal edema, hepatosplenomegaly, and mildly tender subcutaneous plaques in generalized distribution along with patches of scarring alopecia on scalp. There were features of macrophage activation syndrome in the form of hemophagocytosis in the bone marrow, pancytopenia, high serum lactate dehydrogenase levels, low fibrinogen clotting activity, prolonged activated prothrombine time (aPTT), increased serum ferritin, hypoalbuminemia, and hypertriglyceridemia...
November 2016: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/27943413/aberrant-connective-tissue-differentiation-towards-cartilage-and-bone-underlies-human-keloids-in-african-americans
#16
Judilyn Fuentes-Duculan, Kathleen M Bonifacio, Mayte Suárez-Fariñas, Norma Kunjravia, Sandra Garcet, Tristan Cruz, Claire Q F Wang, Hui Xu, Patricia Gilleadeau, Mary Sullivan-Whalen, Michael H Tirgan, James G Krueger
Keloids are benign fibroproliferative tumors more frequently found among African Americans. Until now, keloid etiopathogenesis is not fully understood. To characterize keloids in African Americans, we performed transcriptional profiling of biopsies from large chronic keloids, adjacent nonlesional (NL) skin (n=3) and a newly formed keloid lesion using Affymetrix HGU133 2.0 plus arrays. Quantitative RT-PCR (qRT-PCR) and immunohistochemistry staining were done to confirm increased expression of relevant genes...
December 11, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27939414/decreased-expression-of-il-27-in-moderate-to-severe-psoriasis-and-its-anti-inflammation-role-in-imiquimod-induced-psoriasis-like-mouse-model
#17
Wenjuan Chen, Yu Gong, Xilin Zhang, Yunlei Tong, Xiuxiu Wang, Chengwen Fei, Hui Xu, Qian Yu, Yao Wang, Yuling Shi
BACKGROUND: Psoriasis is a high-incident T-cell-mediated autoimmune disease mainly affecting the skin. Interleukin (IL)-27 is a novel member of the IL-6/IL-12 cytokine family, which plays a versatile role in the differentiation and function of distinct T cell subsets. Previous studies uncovered that IL-27 promoted the onset of psoriasis through enhancing the differentiation of T helper (Th) 1 cells. However, the role of IL-27 in other psoriasis-related Th lineages, especially Th17 cells, remains elusive...
February 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/27914685/protein-gene-product-9-5-pgp9-5-expression-in-benign-cutaneous-mesenchymal-histiocytic-and-melanocytic-lesions-comparison-with-cellular-neurothekeoma
#18
Grace Y Wang, Rosalynn M Nazarian, Lili Zhao, Alexandra C Hristov, Rajiv M Patel, Douglas R Fullen, May P Chan
Cellular neurothekeoma (CNTK) frequently enters the differential diagnosis of a benign dermal cellular proliferation. Diagnosis often relies on immunohistochemistry including the use of protein gene product 9.5 (PGP9.5). A previous study demonstrated PGP9.5 expression across a wide variety of soft tissue neoplasms. We explored the utility of this antibody in distinguishing CNTK from other benign dermal-based lesions. A cohort of CNTK (n=7) and benign cutaneous lesions of neural (n=28), fibrohistiocytic (n=23), fibroblastic (n=25), histiocytic (n=18), myofibroblastic (n=7), smooth muscle (n=14), and melanocytic (n=12) differentiations were immunostained with PGP9...
January 2017: Pathology
https://www.readbyqxmd.com/read/27909082/proteomic-investigation-of-dermal-fibroblasts-isolated-from-affected-and-unaffected-skin-samples-from-patients-with-limited-cutaneous-systemic-sclerosis-2-distinct-entities
#19
Claudio Corallo, Annalisa Santucci, Giulia Bernardini, Natale Figura, Roberto Leoncini, Giulia Riolo, Antonio Montella, Chiara Chirico, Ranuccio Nuti, Nicola Giordano
OBJECTIVE: To identify using proteomic analysis the proteins of altered abundance in the affected and unaffected limited cutaneous systemic sclerosis (lcSSc) skin fibroblasts. METHODS: Excision biopsies (3 mm) were obtained from the affected and unaffected skin of 5 patients with lcSSc. Dermal fibroblasts were isolated enzymatically. Two-dimensional gel electrophoresis was used to separate and define proteins in affected and unaffected fibroblast lysates. Proteins of altered abundance were identified by mass spectrometry...
January 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/27904177/a-clinicopathological-analysis-of-primary-cutaneous-lymphomas-a-6-year-observational-study-at-a-tertiary-care-center-of-south-india
#20
Anza Khader, Shiny Padinjarayil Manakkad, Mohammed Shaan, Sarita Sasidharan Pillai, Najeeba Riyaz, P Binitha Manikoth, Muhammed Kunnummel, Sunitha Balakrishnan
BACKGROUND: Little data are available concerning clinical and pathological patterns of cutaneous lymphomas in India. AIM: To analyze the clinical and histopathological characteristics of cutaneous lymphomas in Indian patients. MATERIALS AND METHODS: This is a single-center, prospective, observational study carried out from January 1, 2010, to December 31, 2015. The patients underwent clinical examination, human T-cell lymphotropic virus-1 (HTLV-1) screening, skin biopsy with hematoxylin and eosin and immunohistochemistry staining...
November 2016: Indian Journal of Dermatology
keyword
keyword
34820
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"