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Keratoacanthoma

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https://www.readbyqxmd.com/read/28323777/msh6-past-and-present-and-muir-torre-syndrome-connecting-the-dots
#1
Meera Mahalingam
Sebaceous neoplasms such as adenoma, sebaceoma, and carcinoma, although sporadic in their occurrence, are clinically significant because of their association with Muir-Torre syndrome (MTS). MTS is a rare autosomal dominant genodermatosis characterized by the occurrence of sebaceous neoplasms and/or keratoacanthomas and visceral malignancies. MTS is usually the result of germline mutations in the DNA mismatch repair genes MSH2 and, albeit less commonly, MLH1. Although less know, MSH6 is yet another key player...
April 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28296794/solitary-large-keratoacanthomas-of-the-head-and-neck-an-observational-study
#2
Anthony M Rossi, Brian Park, Bernice Qi, Erica H Lee, Klaus J Busam, Kishwer S Nehal
BACKGROUND: Solitary large keratoacanthomas (KAs) of the head and neck present a management dilemma, as no reliable means to predict the clinical course is available. Although typically considered a low-grade tumor, KAs are reported to invade/metastasize, prompting more aggressive treatment. There is little published regarding factors that predict when a KA behaves more like an aggressive squamous cell carcinoma (SCC). OBJECTIVE: To study the clinical and pathologic features of large solitary head and neck KAs and assess response to intralesional methotrexate (IL-MTX) as well as predictors of clinical course...
March 14, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28288451/how-to-diagnose-and-classify-tattoo-complications-in-the-clinic-a-system-of-distinctive-patterns
#3
Jørgen Serup
Tattoo complications represent a broad spectrum of clinical entities and disease mechanisms. Infections are known, but chronic inflammatory reactions have hitherto been inconsistently reported and given many interpretations and terms. A clinical classification system of distinct patterns with emphasis on inflammatory tattoo reactions is introduced. Allergic reactions prevalent in red tattoos and often associated with azo pigments are manifested as the 'plaque elevation', 'excessive hyperkeratosis', and 'ulceronecrotic' patterns...
2017: Current Problems in Dermatology
https://www.readbyqxmd.com/read/28270315/keratoacanthoma-centrifugum-marginatum-response-to-acitretin
#4
Abdulmohti Hawilo, Ines Zaraa, Dalenda El Euch, Mourad Mokni, Samir Boubaker, Amel Ben Osman
A previously healthy 70-year-old woman presented with a 5-month history of an asymptomatic keratotic, papulonodular plaque on her right forearm. The lesion started as a follicular papule followed by progressive peripheral proliferation. No record of trauma, contact with any chemicals, use of immunosuppressive drugs, or history of neoplasm was noted. Clinical examination showed an arciform plaque of 10×5 cm, with infiltrated raised borders and central atrophy (Figure 1). Drops of yellowish material exuded from the coalescent nodules constituting an elevated and indurate border...
2017: Skinmed
https://www.readbyqxmd.com/read/28256761/advances-in-histopathological-diagnosis-of-keratoacanthoma
#5
REVIEW
Toshihiro Takai
Keratoacanthoma is a common epithelial lesion, but its nature is controversial. Although a distinct crateriform appearance is a hallmark of keratoacanthoma, other benign or malignant skin lesions may show a similar architecture. Moreover, as lesions diagnosed as conventional keratoacanthoma may show malignant behavior, some authors consider keratoacanthoma to be a variant of squamous cell carcinoma, whereas others consider it as a distinct self-resolving squamous proliferative lesion. The controversy seems to originate from the diverse behavior of keratoacanthoma-like epithelial lesions...
March 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28247230/update-from-the-4th-edition-of-the-world-health-organization-of-head-and-neck-tumours-tumours-of-the-oral-cavity-and-mobile-tongue
#6
Susan Müller
There have been several additions and deletions in Chapter 4 on Tumours of the oral cavity and mobile tongue in the 2017 fourth edition of the World Health Organization Classification of Tumours of the Head and Neck. This chapter excludes the oropharynx, which now is a stand-alone chapter acknowledging the uniqueness of the oropharynx from the oral cavity. New entries in Chapter 4 include rhabdomyoma, haemangioma, schwannoma, neurofibroma and myofibroblastic sarcoma in the section titled Soft tissue and neural tumours...
March 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28222231/two-cases-of-anti-programmed-cell-death-1-associated-bullous-pemphigoid-like-disease-and-eruptive-keratoacanthomas-featuring-combined-histopathology
#7
Justin P Bandino, David M Perry, Christina E Clarke, Richard M Marchell, Dirk M Elston
Programmed cell death protein 1 (PD-1) inhibitors (pembrolizumab, nivolumab) are novel immunotherapies revolutionizing the management of advanced malignancy with an improved adverse effect profile, yet the immune-related side effects are still being characterized.(1,2) We report the unique concurrence of bullous pemphigoid-like disease (BP) with keratoacanthomas and squamous cell carcinomas in two patients receiving anti-PD-1 immunotherapy for metastatic melanoma. This article is protected by copyright. All rights reserved...
February 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28146464/keratoacanthoma%C3%A2-like-cutaneous-metastases-as-the-first-presentation-of-lung-cancer
#8
Martyna Sławińska, Michał Sobjanek, Wojciech Biernat, Roman Nowicki
No abstract text is available yet for this article.
January 31, 2017: Pol Arch Intern Med
https://www.readbyqxmd.com/read/28101021/late-onset-multiple-self-healing-squamous-epithelioma-ferguson-smith-recurrence-induced-by-radiotherapy
#9
Laurence Feldmeyer, Ildiko Szeverényi, Michèle Mandallaz, E Birgit Lane, Daniel Hohl
We report the case of a woman in her 60s with confirmed multiple self-healing squamous epitheliomas (MSSE) Ferguson-Smith. After recurrences following surgery and radiotherapy, the patient was successfully treated with minimal surgical intervention combined with intralesional injections of triamcinolone acetate. The histological comparison between mature and regressed keratoacanthomas (KA) revealed an increased inflammatory infiltrate with numerous plasmacytoid dendritic cells in the regressed KA in comparison to the mature one, speaking in favor of an inflammation-mediated regression process...
September 2016: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28099546/multiple-keratoacanthomas-occurring-in-surgical-margins-and-de-novo-treated-with-intralesional-methotrexate
#10
Vindhya L Veerula, Navid Ezra, Mouhammad Aouthmany, Thomas A Graham, Stephen E Wolverton, Ally-Khan Somani
Keratoacanthomas (KAs) are common skin lesions known for their rapid growth and spontaneous regression. Keratoacanthomas also can occur in sites of prior trauma, such as surgical scars. We report a case of multiple KAs occurring in the site of trauma from a prior surgery and de novo as well as the response to treatment with intralesional methotrexate (MTX).
December 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28095561/self-resolving-eruptive-keratoacanthomas-after-full-field-erbium-laser-resurfacing
#11
Eileen L Axibal, Julia D Kreger, Michael E Contreras, Joel L Cohen
Keratoacanthoma (KA) is a subtype of squamous cell carcinoma whose development has been linked to excessive sun exposure, immunosuppression, and trauma. Given the rapidly expanding therapeutic armamentarium for anti-aging modalities in dermatology, reports of KA secondary to invasive cosmetic procedures are on the rise. We present a case of eruptive KAs after full- eld ablative Erbium:YAG 2940 nm laser resurfacing of the face that resolved with minimal intervention. This case demonstrates the potential for a rare yet signi cant laser complication that may warrant discussion during the consenting process...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28087033/keratoacanthoma-like-dermatofibroma-a-dermoscopic-challenge
#12
Vincenzo Piccolo, Teresa Russo, Markus Danielsson, Daniela Russo, Andres Mauricio Lòpez Muñoz, Massimo Mascolo, Giuseppe Argenziano
No abstract text is available yet for this article.
February 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28027254/evidence-based-medicine-cutaneous-facial-malignancies-nonmelanoma-skin-cancer
#13
Karen L Connolly, Kishwer S Nehal, Joseph J Disa
LEARNING OBJECTIVES: After studying this article, the participant should be able to: 1. Identify clinical features of nonmelanoma skin cancer; 2. Distinguish low-risk versus high-risk basal cell carcinoma and squamous cell carcinoma; 3. Define appropriate management based on current guidelines for various types of basal cell and squamous cell carcinoma. SUMMARY: Skin malignancies are the most prevalent cancers, and plastic surgeons are often the primary physicians engaged in diagnosis and management of these lesions...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28007674/the-current-role-of-in-vivo-reflectance-confocal-microscopy-within-the-continuum-of-actinic-keratosis-and-squamous-cell-carcinoma-a-systematic-review
#14
Kim P Nguyen, Malou Peppelman, Lisa Hoogedoorn, Piet E J Van Erp, Marie-Jeanne P Gerritsen
BACKGROUND: Clinical differentiation between actinic keratosis (AK), squamous cell carcinoma (SCC) in situ, and invasive SCC and its variants may be difficult. Reflectance confocal microscopy (RCM) is a non-invasive technique for in vivo skin imaging. OBJECTIVES: To explicate the diagnostic and monitoring use of RCM within the spectrum of AK and SCC, and evaluate the accuracy of RCM for these diagnoses relative to histopathology. MATERIALS & METHODS: A systematic literature search was performed in PubMed, EMBASE, the Cochrane Library, and Web of Science databases...
December 1, 2016: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/27999416/dermal-delivery-of-constructs-encoding-cre-recombinase-to-induce-skin-tumors-in-pten-loxp-loxp-braf-ca-mice
#15
Marcel A Deken, Ji-Ying Song, Jules Gadiot, Adriaan D Bins, Paula Kroon, Inge Verbrugge, Christian U Blank
Current genetically-engineered mouse melanoma models are often based on Tyr::CreER(T2)-controlled MAPK pathway activation by the BRAF(V600E) mutation and PI3K pathway activation by loss of PTEN. The major drawback of these models is the occurrence of spontaneous tumors caused by leakiness of the Tyr::CreER(T2) system, hampering long-term experiments. To address this problem, we investigated several approaches to optimally provide local delivery of Cre recombinase, including injection of lentiviral particles, DNA tattoo administration and particle-mediated gene transfer, to induce melanomas in Pten(LoxP/LoxP);Braf(CA/+) mice lacking the Tyr::CreER(T2) allele...
December 20, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27993945/human-polyomavirus-dna-detection-in-keratoacanthoma-and-spitz-naevus-no-evidence-for-a-causal-role
#16
Linnea Haeggblom, Joar Franzén, Anders Näsman
Keratoacanthomas (KA) and Spitz naevus (SN) are both lesions with unknown aetiology; therefore, the possibility of a viral involvement, more specifically the involvement of human polyomaviruses (HPyV), was investigated. In total, 22 cases of KA and 25 cases of SN were tested for the presence of HPyVs. DNA was extracted and amplified by multiplex PCR and thereafter tested with a multiplex bead-based assay for HPyVs (BKPyV, JCPyV, KIPyV, WUPyV, MCPyV, TSPyV, HPyV6, 7 and 9) and two primate viruses (SV40 and LPyV)...
December 19, 2016: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/27922892/galectin-3-expression-in-benign-and-malignant-skin-diseases-with-epidermal-hyperplasia
#17
Ze-Xin Jiang, Guo-Zhen Tan, Zhen-Rui Shi, Yu-Ping Zhang, Yan-Fang Han, Liangchun Wang
Galectin-3 has been suggested relative to tumor genesis, progression, and metastasis in basal cell carcinoma and squamous cell carcinoma that are the most common skin cancers characterized by malignant epidermal proliferation. In this study, we evaluated galectin-3 expression in seborrheic keratosis, keratoacanthoma, and infectious diseases including verruca vulgaris, condyloma acuminatum, and chromoblastomycosis that are pathologically featured by benign epidermal proliferation. Galectin-3 expression was shown by immunohistochemical staining and quantified using the Image Pro Plus V6...
November 7, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27822110/the-danish-nonmelanoma-skin-cancer-dermatology-database
#18
REVIEW
Anna Lei Lamberg, Henrik Sølvsten, Ulrikke Lei, Gabrielle Randskov Vinding, Ida Marie Stender, Gregor Borut Ernst Jemec, Tine Vestergaard, Henrik Thormann, Merete Hædersdal, Tomas Norman Dam, Anne Braae Olesen
AIM OF DATABASE: The Danish Nonmelanoma Skin Cancer Dermatology Database was established in 2008. The aim of this database was to collect data on nonmelanoma skin cancer (NMSC) treatment and improve its treatment in Denmark. NMSC is the most common malignancy in the western countries and represents a significant challenge in terms of public health management and health care costs. However, high-quality epidemiological and treatment data on NMSC are sparse. STUDY POPULATION: The NMSC database includes patients with the following skin tumors: basal cell carcinoma (BCC), squamous cell carcinoma, Bowen's disease, and keratoacanthoma diagnosed by the participating office-based dermatologists in Denmark...
2016: Clinical Epidemiology
https://www.readbyqxmd.com/read/27788211/aberrant-dna-methylation-in-keratoacanthoma
#19
Yoshimasa Nobeyama, Hidemi Nakagawa
BACKGROUND: Keratoacanthoma (KA) is a self-limiting epidermal tumor for which histopathological examination sometimes suggests malignancy. Based on inconsistent clinical views, KA can be regarded as both a benign tumor and a variant of squamous cell carcinoma (SCC). Aberrant DNA methylation frequently occurs in malignant tumors but it scarcely occurs in benign tumors. Whether aberrant methylation occurs in KA has not been previously examined. OBJECTIVE: The aim is to elucidate whether aberrant methylation of CpG islands (CGI) containing a high density of cytosine-guanine dinucleotide (CpG) sites occurs in KA...
2016: PloS One
https://www.readbyqxmd.com/read/27739125/toxic-epidermal-necrolysis-induced-by-vemurafenib-after-nivolumab-failure
#20
M Arenbergerova, I Mrazova, J Horazdovsky, E Sticova, A Fialova, P Arenberger
Vemurafenib is a selective inhibitor of the BRAF-kinase approved for the treatment of metastatic melanoma harboring BRAF mutation. Skin toxicity, including maculopapular exanthema, photosensitivity and keratoacanthoma, are the most common treatment-related adverse events of vemurafenib, affecting more than 90% of patients (1,2). It rarely presents with intense severity, with less than 1% of grade-4 toxicities reported in clinical trials (3,4). This article is protected by copyright. All rights reserved.
October 14, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
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