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Cutaneous pathology

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https://www.readbyqxmd.com/read/28422039/-urinary-tract-lymphoepithelial-carcinoma-report-of-two-cases-and-bibliographic-review
#1
Sebastian Valverde Martínez, Waleska Salcedo Mercado, Isabel Rodríguez Cruz, Sara Belén Prieto Nogal, Mario Martín Hernández, Luis Miguel Gómez Tejeda
OBJECTIVE: We report two cases of patients diagnosed with lymphoepithelioma-like carcinomas of the urinary tract. We review the literature of this rare entity. The objective is to clarify the clinical and therapeutic characteristics. METHODS: We present a retrospective review of medical records of two patients diagnosed with lymphoepithelioma-like carcinomas, one in the renal pelvis and the other in the bladder. We review the epidemiology, diagnosis and therapeutic alternatives...
April 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28421895/metastatic-pulmonary-angiosarcoma-presenting-with-bilateral-secondary-spontaneous-pneumothoraces
#2
Daniel Jimenez, James Antaki, Nader Kamangar
BACKGROUND: Spontaneous pneumothorax (SP) is uncommon and can present as a primary disease process or as a result of underlying lung pathology. Several parenchymal lung diseases, such as malignancy, are known to cause SP. One such malignancy, angiosarcoma, has a high propensity to metastasize to the lung and present as cavitary and cystic lesions. CASE: We present a case of a 76-year-old male diagnosed with angiosarcoma of the scalp that was found to have extensive cystic pulmonary metastatic lesions...
May 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28420485/subcutaneous-dermatofibrosarcoma-protuberans-a-rare-subtype-with-predilection-for-the-head-a-retrospective-series-of-18-cases
#3
Beatriz Llombart, Carlos Serra-Guillén, Luis Rubio, Eduardo Nagore, Celia Requena, Victor Traves, Laura Calomarde, Bernardo Bancalari, José Antonio López-Guerrero, Carlos Guillen-Barona, Onofre Sanmartín
BACKGROUND: Dermatofibrosarcoma protuberans (DFSP) typically affects the dermis and subcutaneous tissue. The subcutaneous variant is rare. OBJECTIVE: We sought to characterize the subcutaneous DFSP (SC-DFSP) variant and compare it with cutaneous DFSP (C-DFSP). METHODS: This work was a retrospective study of DFSP treated in our institution. RESULTS: Of 124 cases of DFSP, 18 were SC-DFSP (14.5%). Except for the deep location, the pathologic and genetic features were indistinguishable from the C-DFSP variant...
April 15, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28419674/prognostic-risk-factors-of-first-recurrence-in-patients-with-primary-stage-i-ii-cutaneous-malignant-melanoma-from-the-population-based-swedish-melanoma-register
#4
J Lyth, M Falk, M Maroti, H Eriksson, C Ingvar
BACKGROUND: Prognostic factors in patients with localised primary cutaneous malignant melanoma (CMM) are well described. However, prognostic factors for recurrence are less documented. OBJECTIVES: The aim of this study was to identify prognostic risk factors for first recurrence in patients with localised stage I-II CMM using population-based data. METHODS: This study included 1 437 CMM patients registered in one region of Sweden during 1999-2012 followed-up through December 31, 2012...
April 17, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28412265/one-stage-supramaximal-full-thickness-wedge-resection-of-vascular-lip-anomalies
#5
Dawn K De Castro, Zhi Yang Ng, Paul W Holzer, Milton Waner, Curtis L Cetrulo, Aaron Fay
PURPOSE: Vascular lip anomalies include infantile hemangiomas, venous malformations, and arteriovenous malformations. Surgical management can be complicated by alterations in horizontal length, vertical height, and lip thickness from the underlying pathology. Additional reconstructive challenges include preservation of oral continence, vermillion definition, and the sublabial sulcus. This report describes a technique of supramaximal single-stage full-thickness wedge resection of these lesions...
March 22, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28411854/the-molecular-revolution-in-cutaneous-biology-chromosomal-territories-higher-order-chromatin-remodeling-and-the-control-of%C3%A2-gene-expression-in-keratinocytes
#6
REVIEW
Vladimir A Botchkarev
Three-dimensional organization of transcription in the nucleus and mechanisms controlling the global chromatin folding, including spatial interactions between the genes, noncoding genome elements, and epigenetic and transcription machinery, are essential for establishing lineage-specific gene expression programs during cell differentiation. Spatial chromatin interactions in the nucleus involving gene promoters and distal regulatory elements are currently considered major forces that drive cell differentiation and genome evolution in general, and such interactions are substantially reorganized during many pathological conditions...
May 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28411840/the-molecular-revolution-in-cutaneous-biology-noncoding-rnas-new-molecular-players-in-dermatology-and-cutaneous-biology
#7
REVIEW
Natalia V Botchkareva
Progress in genome sequencing achieved during the last two decades revealed that only about 2% of the genome codes for proteins, while the largest genome fraction is encoding thousands of non-coding RNAs. Non-coding RNAs play indispensable roles in regulating the activity and stability of the genome. Recent research in the area of the non-coding transcriptome signified the crucial roles for RNA regulatory networks in the normal development and their implications in a variety of pathological conditions. Here, recent advances in our understanding of non-coding RNA-mediated regulation of skin development and homeostasis are highlighted, focusing mainly on the regulatory roles of miRNAs and lncRNAs...
May 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28409567/sf3b1-and-bap1-mutations-in-blue-nevus-like-melanoma
#8
Klaus G Griewank, Hansgeorg Müller, Louise A Jackett, Michael Emberger, Inga Möller, Johannes Ap van de Nes, Lisa Zimmer, Elisabeth Livingstone, Thomas Wiesner, Simone L Scholz, Ioana Cosgarea, Antje Sucker, Tobias Schimming, Uwe Hillen, Bastian Schilling, Annette Paschen, Henning Reis, Thomas Mentzel, Heinz Kutzner, Arno Rütten, Rajmohan Murali, Richard A Scolyer, Dirk Schadendorf
Blue nevi are melanocytic tumors originating in the cutaneous dermis. Malignant tumors may arise in association with or resembling blue nevi, so called 'blue nevus-like melanoma', which can metastasize and result in patient death. Identifying which tumors will behave in a clinically aggressive manner can be challenging. Identifying genetic alterations in such tumors may assist in their diagnosis and prognostication. Blue nevi are known to be genetically related to uveal melanomas (eg, both harboring GNAQ and GNA11 mutations)...
April 14, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28409129/malignant-transformation-in-chronic-osteomyelitis
#9
Diogo Lino Moura, Rui Ferreira, António Garruço
INTRODUCTION: Carcinomatous degeneration is a rare and late complication developing decades after the diagnosis of chronic osteomyelitis. OBJECTIVES: To present the results from a retrospective study of six cases of squamous cell carcinoma arising from chronic osteomyelitis. METHODS: Six cases of chronic osteomyelitis related to cutaneous squamous cell carcinoma were identified. The cause and characteristics of the osteomyelitis were analyzed, as well as time up to malignancy, the suspicion signs for malignancy, the localization and histological type of the cancer, and the type and result of the treatment...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28405546/arthropathy-in-dermatology-a-comprehensive-review
#10
REVIEW
Soumya Jagadeesan, Padmanabha Shenoy
Dermatology and rheumatology are two specialties that deal with significant overlap. In this context, it is important that the dermatologists acquaint themselves with conditions presenting with arthropathy. As the first step, it is essential to know whether the origin of musculoskeletal symptom is articular or extra-articular; inflammatory or noninflammatory; acute or chronic; oligo- or poly-articular. This will help in narrowing down the differential diagnoses as well as in better correlation with the cutaneous symptoms...
March 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/28403507/endothelial-dysfunction-and-mechanobiology-in-pathological-cutaneous-scarring-lessons-learned-from-soft-tissue-fibrosis
#11
REVIEW
C Huang, L Liu, Z You, Y Zhao, J Dong, Y Du, R Ogawa
Hypertrophic scars/keloids are pathogenic scars that are characterized by collagen and fibroblast accumulation. The endothelia in the lesions are mechanosensitive and participate actively in the pathogenesis of these scars. The present review summarizes how endothelium responds to mechanical stimuli such as shear, stretch, and hydrostatic pressure. It also shows that in heart, liver, kidney, and lung fibrosis, endothelial dysfunctions (EDs) associate with changes in vascular tone, endothelial permeability, coagulation, and vasomodulation that result in inflammation, hypertension, and coagulation...
April 12, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28403068/malignant-melanoma-in-african-americans-a-population-based-clinical-outcomes-study-involving-1106-african-american-patients-from-the-surveillance-epidemiology-and-end-result-seer-database-1988-2011
#12
Krishnaraj Mahendraraj, Komal Sidhu, Christine S M Lau, Georgia J McRoy, Ronald S Chamberlain, Franz O Smith
Malignant melanoma accounts for 75% of all skin cancer deaths and is potentially curable if identified early. Although melanoma is rare in African-Americans (AA), it is associated with a worse prognosis than in Caucasians. This study examines the demographic, pathologic, and clinical factors impacting AA melanoma outcomes.Data for 1106 AA and 212,721 Caucasian cutaneous melanoma patients were abstracted from the Surveillance, Epidemiology, and End Result (SEER) database (1988-2011). Data were grouped on the basis of histological subtypes: "Superficial Spreading" (SS), "Nodular" (NM), "Lentigo Maligna" (LM), "Acral Lentiginous" (AL), and "Not otherwise specified" (NOS)...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28400634/a-literature-revision-in-primary-cutaneous-b-cell-lymphoma
#13
R La Selva, S Alberti Violetti, C Delfino, V Grandi, S Cicchelli, C Tomasini, M T Fierro, E Berti, N Pimpinelli, P Quaglino
The term "Primary Cutaneous B-Cell Lymphoma" (PCBCL) comprehends a variety of lymphoproliferative disorders characterized by a clonal proliferation of B-cells primarily involving the skin. The absence of evident extra-cutaneous disease must be confirmed after six-month follow-up in order to exclude a nodal non-Hodgkin's lymphoma (NHL) with secondary cutaneous involvement, which may have a completely different clinical behavior and prognosis. In this article, we have summarized the clinico-pathological features of main types of PCBCL and we outline the guidelines for management based on a review of the available literature...
March 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28399101/-clinical-and-epidemiological-characteristics-of-hereditary-motor-sensory-neuropathy-1x-caused-by-the-mutation-c-259c-g-p-p87a-in-the-gjb1-gene-of-patients-from-the-republic-of-bashkortostan
#14
E V Saifullina, R V Magzhanov, I M Khidiyatova, E K Khusnutdinova
BACKGROUND: Hereditary motor-sensory neuropathy 1X (НМСН 1X) is the second frequent form of hereditary motor-sensory neuropathies caused by mutations in the GJB1 gene (gap junction B1 type). The authors have established earlier that the с.259C>G (р.P87A) mutation is the most frequent cause of НМСН 1Х (92%) in patients from the Republic of Bashkortostan. AIM: To study in details the territorial ethnic distribution and clinical manifestations of the с...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28393908/resolvin-d1-drives-establishment-of-leishmania-amazonensis-infection
#15
Hayna Malta-Santos, Bruno B Andrade, Dalila L Zanette, Jackson M Costa, Patrícia T Bozza, Christianne Bandeira-Melo, Aldina Barral, Jaqueline França-Costa, Valéria M Borges
Previous studies have indicated that the balance between different eicosanoids reflect the intensity of the inflammatory profile in patients with tegumentary leishmaniasis. More recently, pro-resolution lipid mediators have been shown to play critical roles in dampening pathological inflammatory processes to reestablish homeostasis in a diverse range of experimental settings. Among these lipid mediator, resolvins from D series have been described as potent anti-inflammatory and immunomodulatory mediators, and its activities include inhibition of leukocyte chemotaxis and blockage production of proinflammatory cytokines, while increasing the expression of regulatory mediators...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28374274/bilateral-extensive-nodular-xanthelasma-palpebrarum-an-infrequent-case-report
#16
Pei Wang, Qingli Luo, Li Tang
PURPOSE: To report a rare case of extensive bilateral xanthelasma palpebrarum (XP). A 70-year-old man presented with nodular lesions of his eyelids for 12 years. The skin changes began with his left lower eyelid and progressively spread to both lateral-inferior and infero-medial periorbital areas. The lesions were yellow nodules that were hard, extensive, multiple and coalescent. METHOD: The tumors of this patient's eyelids underwent resection and tissue was processed for light microscopic examination...
April 3, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28370679/secreted-factors-from-equine-mesenchymal-stromal-cells-diminish-the-effects-of-tgf-%C3%AE-1-on-equine-dermal-fibroblasts-and-alter-the-phenotype-of-dermal-fibroblasts-isolated-from-cutaneous-fibroproliferative-wounds
#17
Rebecca M Harman, Ivanna V Bihun, Gerlinde R Van de Walle
The prevalence of cutaneous fibroproliferative disorders (CFPDs) is high and almost exclusively occurs in humans (keloids and hypertrophic scars) and horses (exuberant granulation tissue), making the horse a valuable translational model for studies on prevention and treatment of human CFPDs. CFPDs arise as a result of dysregulated wound healing characterized by persistently high levels of cytokines, such as transforming growth factor beta 1 (TGF-β1), that contribute to excessive extracellular matrix deposition, and the physical disorganization of dermal fibroblasts...
April 1, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28367689/operative-anatomy-of-the-medial-gastrocnemius-recession-vs-the-proximal-medial-gastrocnemius-recession
#18
Nathan Kaplan, Xavier Fowler, Noorullah Maqsoodi, Benedict DiGiovanni, Irvin Oh
BACKGROUND: Isolated gastrocnemius contracture (IGC) is associated with various foot and ankle pathologies. To address the problem of IGC, a number of gastrocnemius lengthening procedures have been described. Although proximal medial gastrocnemius recession (PMGR) has shown to be an effective operative treatment for IGC, it poses risks to various anatomic structures around the knee joint and requires the patient to be positioned prone. As an alternative, we proposed to release the medial gastrocnemius at the division between the proximal one-third and distal two-thirds of the gastrocnemius muscle to correct equinus contracture, while minimizing risk to other structures...
April 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28365528/european-organisation-for-research-and-treatment-of-cancer-consensus-recommendations-for-the-treatment-of-mycosis-fungoides-s%C3%A3-zary-syndrome-update-2017
#19
REVIEW
Franz Trautinger, Johanna Eder, Chalid Assaf, Martine Bagot, Antonio Cozzio, Reinhard Dummer, Robert Gniadecki, Claus-Detlev Klemke, Pablo L Ortiz-Romero, Evangelia Papadavid, Nicola Pimpinelli, Pietro Quaglino, Annamari Ranki, Julia Scarisbrick, Rudolf Stadler, Liisa Väkevä, Maarten H Vermeer, Sean Whittaker, Rein Willemze, Robert Knobler
In order to provide a common standard for the treatment of mycosis fungoides (MF) and Sézary syndrome (SS), the European Organisation for Research and Treatment of Cancer-Cutaneous Lymphoma Task Force (EORTC-CLTF) published in 2006 its consensus recommendations for the stage-adapted selection of management options for these neoplasms. Since then, the understanding of the pathophysiology and epidemiology of MF/SS has advanced, the staging system has been revised, new outcome data have been published and novel treatment options have been introduced...
March 30, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28365395/clinicopathological-and-immunohistochemical-analysis-of-oral-melanocytic-nevi-and-review-of-the-literature
#20
M Amérigo-Góngora, G Machuca-Portillo, D Torres-Lagares, P Lesclous, J Amérigo-Navarro, R González-Cámpora
INTRODUCTION: Oral melanocytic nevi (OMNs) are uncommon benign melanocytic tumors, histologically similar to their cutaneous counterparts. The aim of this study was twofold: to contribute to the epidemiology with a literature review with the first Spanish series of OMNs, and to report on clinicopathological, immunohistochemical and demographic findings. MATERIALS AND METHODS: A retrospective analysis of cases attended over the period 1999-2010 was carried out using data drawn from the pathology unit files at two public hospitals in the Spanish region of Andalusia, serving between them a population of 823...
March 29, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
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