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Nora B Henrikson, Caitlin C Morrison, Paula R Blasi, Matt Nguyen, Kendall C Shibuya, Carrie D Patnode
Importance: Exposure to UV radiation, especially in childhood, increases skin cancer risk. Objective: To systematically review the evidence on the benefits and harms of behavioral counseling for skin cancer prevention to inform the US Preventive Services Task Force (USPSTF). Data Sources: Cochrane Central Register of Controlled Trials, MEDLINE, and PubMed were searched for studies published from January 2009 to March 31, 2016, for skin cancer prevention and from August 2005 to March 31, 2016, for skin self-examination...
March 20, 2018: JAMA: the Journal of the American Medical Association
Yi-Teng Tseng, Cher-Wei Liang, Jau-Yu Liau, Koping Chang, Yu-Hsian Tseng, Jau-Shiuh Chen, Yi-Hua Liao
BACKGROUND: Longitudinal melanonychia (LM) may occur as a result of nail apparatus melanoma. Knowledge of etiology plays an important role in the management of LM. OBJECTIVES: The study is aimed to compare the diagnosis of LM in different age groups. METHODS: We collected 63 cases (45 adults and 18 children) with LM who underwent nail matrix biopsy or excision in a 21-year cohort and assessed their clinicopathological features. RESULTS: Melanomas in adults and children were 40% and none, while nevi accounted for 15...
March 19, 2018: Dermatology: International Journal for Clinical and Investigative Dermatology
Ibrahim Sayed-Ahmed, Juan Carlos Murillo, Pedro Monsalve, Jan Paul Ulloa, Maria P Fernandez, James Wong, George Elgart, Anat Galor, Sander R Dubovy, Carol L Karp
PURPOSE: Blue nevus is a melanocytic tumor that is commonly found in the skin. Extracutaneous presentations, including the ocular surface, are rare. As such, the purpose of this study was to characterize the clinical features and clinical course of congenital melanocytic tumor (blue nevus) of the conjunctiva. DESIGN: Retrospective, noncomparative case series. PARTICIPANTS: Twenty-one patients with 23 blue nevi of the ocular surface that were excised surgically between 2000 and 2016...
March 15, 2018: Ophthalmology
C Ranieri, S Di Tommaso, D C Loconte, V Grossi, P Sanese, R Bagnulo, F C Susca, G Forte, A Peserico, A De Luisi, A Bartuli, A Selicorni, D Melis, M Lerone, A D Praticò, G Abbadessa, Y Yu, B Schwartz, Martino Ruggieri, Cristiano Simone, Nicoletta Resta
Postzygotic mutations of the PIK3CA [phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha] gene constitutively activate the PI3K/AKT/mTOR pathway in PIK3CA-related overgrowth spectrum (PROS) patients, causing congenital mosaic tissue overgrowth that even multiple surgeries cannot solve. mTOR inhibitors are empirically tested and given for compassionate use in these patients. PROS patients could be ideal candidates for enrolment in trials with PI3K/AKT pathway inhibitors, considering the "clean" cellular setting in which a unique driver, a PIK3CA mutation, is present...
March 16, 2018: Neurogenetics
Efrat Fleissig, Mor Pavlovksy, Anat Loewenstein, Dinah Zur, Hadas Newman, Shay Keren, Dafna Goldenberg, Efrat Bar-Ilan, Michaella Goldstein
PURPOSE: To investigate ocular manifestations in patients with vitiligo by multimodal imaging, including optical coherence tomography (OCT), color fundus photography, and fundus autofluorescence (FAF). METHODS: In this prospective, observational clinical study, vitiligo patients underwent ophthalmologic and dermatologic clinical assessment and imaging by spectral-domain OCT, FAF, and color fundus imaging. Ocular echography was performed as indicated. Statistical analysis was performed using paired T test and Pearson correlation...
March 16, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
Katharina Wiedemeyer, Antonio Guadagno, Jonathan Davey, Thomas Brenn
Spitz nevi on acral sites are rare and poorly documented. The combination of Spitzoid cytomorphology and atypical architectural features of the junctional component may lead to an erroneous diagnosis of melanoma. To study the clinicopthologic and immunohistochemical features, 50 Spitz nevi localized on the distal extremities were retrieved from departmental files. Clinical data and follow-up were obtained and the histologic features were analyzed. P16 and P21 immunohistochemical staining of the dermal component was compared with that of 10 acral lentiginous melanomas and 10 acral nevi...
March 13, 2018: American Journal of Surgical Pathology
Oscar W Nevares-Pomales, Osward Y Carrasquillo, Marely Santiago-Vazquez, Francisco Colon-Fontanez
Spitz nevus is a type of melanocytic nevus that can arise as a solitary lesion or as multiple lesions either disseminated or agminated (grouped) in different skin backgrounds (eg, grossly normal, hyperpigmented, or hypopigmented). Agminated Spitz nevi have been rarely reported and are even rarer in a background of hypopigmented skin. We present the case of a 2-month-old girl with multiple, grouped, dome-shaped, red papules arising on a hypopigmented patch with a segmental distribution. Biopsy of 2 lesions showed findings characteristic of Spitz nevus, confirming the diagnosis...
February 27, 2018: American Journal of Dermatopathology
Mian Ma, Zhi-Liang Ding, Zhi-Qi Cheng, Gang Wu, Xiao-Yu Tang, Peng Deng, Jian-Dong Wu
OBJECTIVE: To explore the clinical characteristics of neurocutaneous melanosis (NCM) in adult patients in order to help improve diagnosis and treatment of this disease. METHODS: We present a rare case of an adult patient suffering from neurocutaneous melanosis with malignant melanoma as well as a review Chinese and English literature, and analyze their clinical features. RESULTS: There were thirty adult NCM patients, aged 19 to 65 years old, average 27...
March 9, 2018: World Neurosurgery
Deren Özcan, Deniz Seçkin, Mehmet Haberal
OBJECTIVES: The incidence and mortality of melanoma are increased in organ transplant recipients. Multiple acquired common and dysplastic nevi are risk factors for melanoma. A new or changing nevus may suggest melanoma. Strategies used by transplant dermatologists to monitor nevi are unknown. Herein, we aimed to assess the methods used by transplant dermatologists for monitoring multiple acquired common nevi, dysplastic nevi, and new or changing nevi. MATERIALS AND METHODS: A questionnaire was e-mailed to 63 members of the Skin Care in Organ Transplant Patients, Europe...
March 2018: Experimental and Clinical Transplantation
Hannu Tiri, Jari Jokelainen, Markku Timonen, Kaisa Tasanen, Laura Huilaja
BACKGROUND: Hidradenitis suppurativa (HS) is associated with various somatic and psychiatric comorbidities. Data regarding comorbidities in young HS patients are sparse. OBJECTIVE: We analyzed both somatic and psychiatric comorbidities in young patients in a nationwide HS cohort. METHODS: In this retrospective case-control study, data from cases of HS in young (aged ≥5 and <18 years) patients and age-matched controls with benign melanocytic nevi were collected from the Finnish Care Registry of Health Care...
March 5, 2018: Journal of the American Academy of Dermatology
Girish Gulab Meshram, Neeraj Kaur, Kanwaljeet Singh Hura
Giant congenital melanocytic nevi (GCMN) are a rare occurrence. Gain-of-function mutation in the NRAS gene is found to be associated with GCMN, causing abnormal proliferation of embryonic melanoblasts. The two major complications associated with GCMN are malignant melanoma and neurocutaneous melanosis. Treatment of GCMN has conventionally been surgical. However, the role of NRAS inhibitors and inactivation of nevus tissue by high hydrostatic pressure are being explored. We present a case of a 1-day-old neonate born with GCMN, along with a review of the literature...
January 2018: Case Reports in Dermatology
Chanki Yu, Sejung Yang, Wonoh Kim, Jinwoong Jung, Kee-Yang Chung, Sang Wook Lee, Byungho Oh
BACKGROUND/PURPOSE: Acral melanoma is the most common type of melanoma in Asians, and usually results in a poor prognosis due to late diagnosis. We applied a convolutional neural network to dermoscopy images of acral melanoma and benign nevi on the hands and feet and evaluated its usefulness for the early diagnosis of these conditions. METHODS: A total of 724 dermoscopy images comprising acral melanoma (350 images from 81 patients) and benign nevi (374 images from 194 patients), and confirmed by histopathological examination, were analyzed in this study...
2018: PloS One
Jianwen Long, Jing Luo, Xuwen Yin
Melanoma presents a serious threat to human health but the underlying mechanisms have not been fully identified. Increasing evidence indicates that microRNAs exert a significant influence on the tumorigenesis and metastasis of different types of cancer. The present study aimed to identify the role of microRNA (miR)‑367 in the initiation and progression of melanoma and investigate its potential target. A total of 50 melanoma samples and 25 benign nevi tissues were used in the present study. Reverse transcription‑quantitative polymerase chain reaction and western blot analysis were performed to determine the expression of mRNA and protein, respectively...
March 1, 2018: Molecular Medicine Reports
Małgorzata Mackiewicz-Wysocka, Patrycja Czerwińska, Violetta Filas, Elżbieta Bogajewska, Agata Kubicka, Anna Przybyła, Ewelina Dondajewska, Tomasz Kolenda, Andrzej Marszałek, Andrzej Mackiewicz
Introduction: Twenty-five - fifty percent of skin melanomas arise from nevi. Melanocyte proliferation is activated by BRAF V600E , then is arrested, but single nevi transform to melanomas. p16 controls arrest, and p16 loss may promote transformation. Aim: To analyze BRAF V600E , p16 expression and melanocyte proliferation in dermal, compound and dysplastic nevi, cells of primary and metastatic melanoma in the Polish population. Material and methods: One hundred and thirty-two nevi (dermal, compound, dysplastic) and 41 melanomas ( in situ , primary, metastatic) were studied...
October 2017: Postȩpy Dermatologii i Alergologii
Hyunje G Cho, Katherine J Ransohoff, Lingyao Yang, Haley Hedlin, Themistocles Assimes, Jiali Han, Marcia Stefanick, Jean Y Tang, Kavita Y Sarin
BACKGROUND: Single-nucleotide polymorphisms (SNPs) associated with melanoma have been identified though genome-wide association studies (GWASs). However, the combined impact of these SNPs on melanoma development remains unclear, particularly in post-menopausal women who carry lower melanoma risk. OBJECTIVE: To examine the contribution of a combined polygenic risk score on melanoma development in post-menopausal women. METHODS: Genetic risk scores (GRS) were calculated using 21 GWAS-significant SNPs...
February 27, 2018: Journal of the American Academy of Dermatology
Stuart Keel, Jing Xie, Joshua Foreman, Hugh R Taylor, Mohamed Dirani
IMPORTANCE: Choroidal nevi are a common incidental finding on fundus examination. The National Eye Health Survey (NEHS, 2015-16) provides an up-to-date estimate of the prevalence of choroidal nevi in non-Indigenous and Indigenous Australian adults. BACKGROUND: To describe the prevalence and characteristics of choroidal nevi amongst non-Indigenous and Indigenous Australian adults. DESIGN: Population-based cross-sectional study PARTICIPANTS: This study included 3098 non-Indigenous Australians (aged 50-98 years) and 1738 Indigenous Australians (aged 40-92 years) living in 30 randomly selected sites, stratified by remoteness...
March 2, 2018: Clinical & Experimental Ophthalmology
Pieter Denorme, Marie-Anne Morren, Silke Hollants, Marijke Spaepen, Kate Suaer, Nele Zutterman, Veerle Labarque, Eric Legius, Hilde Brems
A patient with extensive multisystem overgrowth caused by a somatic gain of function PIK3CA-mutation is described. This case is an example of the clinical diversity of the PIK3CA-Related Overgrowth Spectrum (PROS) as the patient had overlapping features of Congenital Lipomatous Overgrowth Vascular malformations Epidermal nevi and Skeletal abnormalities (CLOVES) syndrome and Megalencephaly-Capillary malformation Polymicrogyria (MCAP) syndrome and underlines the utility of this umbrella term.
March 1, 2018: Pediatric Dermatology
Carolina Martinez Ciarpaglini, Jose Gonzalez, Beatriz Sanchez, Jaime Agusti, Lara Navarro, Gema Nieto, Carlos Monteagudo
AIMS: The risk assessment of spitzoid lesions is one of the most difficult challenges in dermatopathology practice. In this regard, the loss of p16 expression and the homozygous deletion of CDKN2A, have been pointed in the literature as reliable indicators of high risk. However, these findings are poorly reproducible, and the molecular bases underlying the loss of p16 expression remain unclear. We aimed to identify the underlying events causing loss of CDKN2A/p16 in spitzoid tumors. MATERIALS AND METHODS: We evaluated the immunohistochemical expression of p16, and the presence of CDKN2A genetic alterations detected through fluorescence in situ hybridization (FISH) and multiplex ligation-dependent probe amplification (MLPA), in a series of 130 Spitz nevi, 20 atypical spitzoid tumors, and 11 spitzoid melanoma...
February 27, 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
Aedán Breathnach, Elizabeth Concannon, Jemima J Dorairaj, Shazrinizam Shaharan, James McGrath, Jithin Jose, Jack L Kelly, Martin J Leahy
Photoacoustic imaging (PAI) is an emerging biomedical imaging technology, which can potentially be used in the clinic to preoperatively measure melanoma thickness and guide biopsy depth and sample location. We recruited 27 patients with pigmented cutaneous lesions suspicious for melanoma to test the feasibility of a handheld linear-array photoacoustic probe in imaging lesion architecture and measuring tumor depth. The probe was assessed in terms of measurement accuracy, image quality, and ease of application...
January 2018: Journal of Medical Imaging
Sara Bassoli, Cristina Pellegrini, Caterina Longo, Lucia Di Nardo, Francesca Farnetani, Anna M Cesinaro, Giovanni Pellacani, Maria Concetta Fargnoli
No abstract text is available yet for this article.
April 2018: Melanoma Research
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