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dermoscopy melanoma

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
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
Giulia M Ravaioli, Emi Dika, Martina Lambertini, Marco A Chessa, Pier A Fanti, Annalisa Patrizi
Acral lentiginous melanoma (ALM) is the most common type of malignant melanoma (MM) in Asians, Afro-Americans and Middle-Easterns. It represents 1.5-10% of all MM cases, being the most common histological type of MM arising on palms, soles and nail apparatus, which is more generically defined as acral MM. To date no risk factors have been officially established, however a history of trauma may be involved in the pathogenesis of acral MM. This shows heterogeneous clinical features and frequently presents with advanced stage and aggressive behaviour, often as a result of misdiagnosis or delayed identification...
March 6, 2018: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
Cristina Carrera, Sonia Segura, Paula Aguilera, Carol Midori Takigami, Antonio Gomes, Alicia Barreiro, Massimiliano Scalvenzi, Caterina Longo, Stefano Cavicchini, Luc Thomas, Josep Malvehy, Susana Puig, Iris Zalaudek
BACKGROUND: Malignant melanomas mimicking seborrheic keratosis (SK-like MMs) carry the risk of delayed diagnosis and inadequate treatment. The value of dermoscopy to improve the correct detection of these mimickers has not been previously studied. OBJECTIVE: To evaluate the diagnostic accuracy of clinically SK-like MMs with and without dermoscopy. METHODS: Clinical and dermoscopic images of histopathologically proven SK-like MMs (n = 134) intermingled with other melanomas and benign tumors were randomly presented to clinicians with different levels of experience, blinded to the diagnosis and goal of the study...
March 2, 2018: Dermatology: International Journal for Clinical and Investigative Dermatology
Lindsay McCORMACK, Elena B Hawryluk
Pediatric melanoma is a rare disease that affects approximately 6 out of every one million children and accounts for 1-4 percent of all melanomas. This article reviews the epidemiology, etiology, diagnosis, treatment and prognosis of pediatric melanoma - with particular attention to recent updates in the literature. While awareness of melanoma increases among the general population, recent data suggest stable and even declining incidence rates among certain pediatric populations. Studies have examined clinical features and presentations of melanoma among the pediatric population and the conventional ABCDE criteria used to diagnosis adult melanoma may not be entirely appropriate for pediatric melanoma; as such, additional pediatric-ABCD and CUP criteria have been proposed...
February 26, 2018: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
Georgi Tchernev, Anastasiya Atanasova Chokoeva, Ivan Terziev, Yavor Grigorov, Torello Lotti, Uwe Wollina, José Carlos Cardoso, Irina Yungareva, Ilia Lozev, Georgi Konstantinov Maximov
Small pigmented lesions in children can represent a significant diagnostic challenge. If the diagnostic features and therapeutic approach are relatively well established in large and giant nevi, there is still much controversy regarding small and intermediate-sized congenital pigmented lesions that can lead to significant diagnostic challenges, both clinically and dermoscopically, and consequently to difficulty in defining the optimal approach in such cases. Although dermoscopy can be useful in the diagnosis of pigmented lesions, the diversity of clinical and dermoscopic features of pigmented nevi in children usually hinder the differentiation between them and melanoma...
January 25, 2018: Open Access Macedonian Journal of Medical Sciences
Georgi Tchernev, Yavor Grigorov, Stanislav Philipov, Anastasiya Chokoeva, Uwe Wollina, Torello Lotti, Jose Cardoso, Irina Yungareva, Ilia Lozev, Georgi Konstantinov Maximov
BACKGROUND: Subungual exostosis is a relatively uncommon, benign osteocartilaginous tumor of the distal phalanx of the toes or fingers in young adults, considered as a rare variant of osteochondroma. Differential diagnoses include subungual verruca (viral wart), pyogenic granuloma, osteochondroma, amelanotic subungual melanoma and glomus tumour. Misdiagnosis and total onychodystrophy frequently occur as a result of late treatment or inadequate treatment strategy. Dermoscopy could be a useful technique, involved in the diagnostic process, although X-ray examination and histopathology are mandatory for the diagnosis...
January 25, 2018: Open Access Macedonian Journal of Medical Sciences
Kaitlin L Nufer, Anthony P Raphael, H Peter Soyer
No abstract text is available yet for this article.
February 21, 2018: JAMA Dermatology
Yuexiang Li, Linlin Shen
Skin lesions are a severe disease globally. Early detection of melanoma in dermoscopy images significantly increases the survival rate. However, the accurate recognition of melanoma is extremely challenging due to the following reasons: low contrast between lesions and skin, visual similarity between melanoma and non-melanoma lesions, etc. Hence, reliable automatic detection of skin tumors is very useful to increase the accuracy and efficiency of pathologists. In this paper, we proposed two deep learning methods to address three main tasks emerging in the area of skin lesion image processing, i...
February 11, 2018: Sensors
Andreas Blum, Jürgen Kreusch, Wilhelm Stolz, Giuseppe Argenziano, Ana-Maria Forsea, Del Marmol V, Iris Zalaudek, H Peter Soyer, Holger A Haenssle
BACKGROUND: Survey on the current status of dermoscopy in Germany. METHODS: In the context of a pan-European internet-based study (n = 7,480) conducted by the International Dermoscopy Society, 880 German dermatologists were asked to answer questions with respect to their level of training as well as their use and perceived benefit of dermoscopy. RESULTS: Seven hundred and sixty-two (86.6 %) participants practiced dermatology in a publicly funded health care setting; 98...
February 2018: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
C Pezzini, V D Mandel, F Persechino, S Ciardo, S Kaleci, J Chester, N De Carvalho, S Persechino, G Pellacani, F Farnetani
BACKGROUND: Seborrheic keratoses (SebK) with atypical dermoscopy presentation are increasingly reported. These lesions do not exhibit typical dermoscopy features of SebK and sometimes mimic melanoma, thus complicating the differential diagnosis. Reflectance confocal microscopy (RCM) is a non-invasive tool, which allows an in vivo imaging of the skin. The study objectives were to evaluate the agreement between RCM classification and histological diagnoses, and the reliability of well-known RCM criteria for SebK in the identification of SebK with atypical dermoscopy presentation...
January 24, 2018: Skin Research and Technology
S Borsari, R Pampena, E Benati, C Bombonato, K Athanassios, E Moscarella, A Lallas, G Argenziano, G Pellacani, C Longo
BACKGROUND: Although several dermoscopic features of in situ melanoma (MIS) have been identified, data on confocal features for MIS are still lacking. OBJECTIVES: To identify RCM (reflectance confocal microscopy) features of MIS and to develop a diagnostic score for MIS while combining dermoscopy and RCM. METHODS: 120 MIS and 213 nevi (test set) were retrospectively analysed to assess the presence of dermoscopic and RCM criteria. Facial and acral lesions have been excluded...
January 21, 2018: British Journal of Dermatology
E Cinotti, B Labeille, S Debarbieux, C Carrera, F Lacarrubba, A M Witkowski, E Moscarella, E Arzberger, H Kittler, P Bahadoran, S Gonzalez, P Guitera, M Agozzino, F Farnetani, R Hofmann-Wellenhof, M Ardigò, P Rubegni, L Tognetti, J Łudzik, I Zalaudek, G Argenziano, C Longo, S Ribero, J Malvehy, G Pellacani, F Cambazard, J L Perrot
BACKGROUND: Several dermoscopic and in vivo reflectance confocal microscopy (RCM) diagnostic criteria of lentigo maligna (LM)/lentigo maligna melanoma (LMM) have been identified. However, no study compared the diagnostic accuracy of these techniques. OBJECTIVE: We evaluated the diagnostic accuracy of dermoscopy and RCM for LM/LMM using a holistic assessment of the images. METHODS: 223 facial lesions were evaluated by 21 experts. Diagnostic accuracy of the clinical, dermoscopic and RCM examination were compared...
January 17, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
Alice Casari, Johanna Chester, Giovanni Pellacani
Actinic keratosis represents the earliest manifestation of non-melanoma skin cancer. Because of their risk of progression to invasive squamous cell carcinoma, an earlier diagnosis and treatment are mandatory. Their diagnosis sometimes could represent a challenge even for expert dermatologists. Dermoscopy, confocal laser microscopy and optical coherence tomography could help clinicians in diagnosis.
January 8, 2018: Biomedicines
V Papageorgiou, Z Apalla, E Sotiriou, C Papageorgiou, E Lazaridou, S Vakirlis, D Ioannides, A Lallas
Dermoscopy has been documented to increase the diagnostic accuracy of clinicians evaluating skin tumors, improving their ability to detect skin cancer and better recognize benign moles. However, dermoscopically "false positive" and "false negative" tumors do exist. False positive diagnosis usually leads to unnecessary excisions. False negative diagnosis is much more dangerous, since it might result in overlooking a cancer, with severe undesirable consequences for the patient and the physician. Therefore, management strategies should mainly focus on addressing the risk of dermoscopically false negative tumors...
January 5, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
Pedro Zaballos, Carolina Medina, Luis J Del Pozo, Ignacio Gómez-Martín, José Bañuls
BACKGROUND/OBJECTIVES: Arteriovenous tumour is a distinct, benign, acquired vascular lesion that can be misdiagnosed. METHODS: A dermoscopic examination of 39 cases of arteriovenous tumours collected from four Spanish hospitals was performed to evaluate specific dermoscopic criteria and patterns. RESULTS: The most common structures found were vascular, 95% of cases (37/39); 90% (35/39) were non-arborising telangiectasia. All the lesions except two (95%) had a homogeneous pigmentation background that was red in 30 cases (77%), bluish-red in three (8%), brown in two (5%) and blue or multicoloured in one case each...
January 5, 2018: Australasian Journal of Dermatology
Caroline G Watts, Sally Wortley, Sarah Norris, Scott W Menzies, Pascale Guitera, Lisa Askie, Graham J Mann, Rachael L Morton, Anne E Cust
BACKGROUND: Specialised surveillance using total body photography and digital dermoscopy to monitor people at very high risk of developing a second or subsequent melanoma has been reported as cost effective. OBJECTIVES: We aimed to estimate the 5-year healthcare budget impact of providing specialised surveillance for people at very high risk of subsequent melanoma from the perspective of the Australian healthcare system. METHODS: A budget impact model was constructed to assess the costs of monitoring and potential savings compared with current routine care based on identification of patients at the time of a melanoma diagnosis...
January 5, 2018: Applied Health Economics and Health Policy
Recep Erol, Mustafa Bayraktar, Sinan Kockara, Sertan Kaya, Tansel Halic
BACKGROUND: Abruptness of pigment patterns at the periphery of a skin lesion is one of the most important dermoscopic features for detection of malignancy. In current clinical setting, abrupt cutoff of a skin lesion determined by an examination of a dermatologist. This process is subjective, nonquantitative, and error-prone. We present an improved computational model to quantitatively measure abruptness of a skin lesion over our previous method. To achieve this, we quantitatively analyze the texture features of a region within the lesion boundary...
December 28, 2017: BMC Bioinformatics
A Desai, R Ugorji, A Khachemoune
Acral melanoma (AM) is a rare subtype of cutaneous malignant melanoma found on acral skin, primarily on the soles of the feet. Although rare, it is the most common subtype of melanoma found in patients of African or Asian ethnicity and has a poor prognosis, often because of the more advanced stage of presentation at diagnosis. In the second of this two-part series, we review the clinical presentation, histopathology, diagnosis and management of AM. Clinically, AM presents as a variegated lesion with blue-black pigment and irregular borders on acral skin...
March 2018: Clinical and Experimental Dermatology
L Niebergall, J Meyer, K Kols, P Elsner
No abstract text is available yet for this article.
December 12, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
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