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Lentigo maligna melanoma

Marco Manfredini, Giovanni Pellacani, Lorena Losi, Monia Maccaferri, Aldo Tomasi, Giovanni Ponti
AIM: To evaluate clinical, pathologic and genetic features of desmoplastic melanoma (DM). MATERIALS & METHODS: Analysis of all DM records from 1991 to 2015. RESULTS: The most common location of DMs was the head and neck (69%); median age and follow-up were 60.5 and 7.3 years, respectively. A familial predisposition for DMs and others malignancies was analyzed. Thin Breslow thickness (<4.5 mm) was associated with an intraepidermal component or a previous lentigo maligna, whereas high Breslow thickness (>4...
October 12, 2016: Future Oncology
J R Marsden, R Fox, N M Boota, M Cook, K Wheatley, L Billingham, N Steven
BACKGROUND: Topical imiquimod is sometimes used for lentigo maligna (LM) in-situ melanoma instead of surgery, but frequency of cure is uncertain. Pathological complete regression (pCR) is a logical surrogate marker for cure after imiquimod, although residual LM and atypical melanocytic hyperplasia may not be reliably distinguished. A trial comparing imiquimod versus surgery might be justified by a high imiquimod pCR rate. OBJECTIVES: Primary: to estimate pCR rate for LM following imiquimod...
October 6, 2016: British Journal of Dermatology
Phoebe Star, Pascale Guitera
Distinguishing lentigo maligna (LM) and lentigo maligna melanoma (LMM) from background pigmented non-melanoma lesions is challenging. The field of solar damage can obscure clinical assessment, and diagnostic ambiguities are created due to the overlap of the clinical features of LM with other benign lesions. Moreover, margin assessment on histology is limited by the resemblance between melanocytic hyperplasia of actinically damaged skin and scattered atypical melanocytes of LM/LMM. Dermoscopy has made a significant contribution but is often not sufficient for diagnosis and margin assessment...
October 2016: Dermatologic Clinics
Caterina Longo, Giovanni Pellacani
Melanomas are a wide range of tumors that differ in their epidemiology, morphology, genetic profile, and biological behavior. They can be grouped as superficial spreading melanoma, lentigo maligna, and nodular melanoma. Reflectance confocal microscopy is useful for the evaluation of skin lesions that are dermoscopically doubtful by increasing diagnostic accuracy and specificity. This article provides a comprehensive overview of the different confocal main morphologies of distinct melanoma types as a function of the anatomic location of the tumor...
October 2016: Dermatologic Clinics
Sang Yub Kim, Sook Jung Yun
Malignant melanoma is a rare disease in Asians but potentially the most aggressive form of skin cancer worldwide. It can occur in any melanocyte-containing anatomic site. Four main cutaneous melanoma subtypes are recognized: lentigo maligna melanoma, superficial spreading melanoma, acral lentiginous melanoma (ALM), and nodular melanoma. Generally, excessive exposure to ultraviolet (UV) radiation increases the risk of melanoma. The exception is ALM, which is the most common melanoma subtype in Asians and is not associated with UV radiation...
September 2016: Chonnam Medical Journal
Kathrine Damm Meyle, Michael Gamborg, Lisbet Rosenkrantz Hölmich, Jennifer Lyn Baker
AIM OF THE STUDY: Melanoma subtypes have different aetiological characteristics. Child height is positively associated with adult melanoma; however, a clarification of associations with specific melanoma variants is necessary for an improved understanding of risk factors underlying the histologic entities. This study investigated associations between childhood height and future development of cutaneous melanoma variants. METHOD: A cohort study of 316,193 individuals from the Copenhagen School Health Records Register, with measured heights at ages 7-13 years who were born from 1930 to 1989...
November 2016: European Journal of Cancer
Philip R Cohen
BackgroundSegmental neurofibromatosis, referred to as mosaic neurofibromatosis 1, patients present with neurofibromas or café au lait macules or both in a unilateral segment of the body.PurposeA woman with segmental neurofibromatosis and triple cancer (renal cell carcinoma, mixed thyroid carcinoma, and lentigo maligna) is described and cancers observed in patients with segmental neurofibromatosis are reviewed.MethodsPubMed was used to search the following terms, separately and in combination: cancer, malignancy, mosaic, neoplasm, neurofibroma, neurofibromatosis, segment, segmental, tumor...
2016: Dermatology Online Journal
R Gamo, A Pampín, U Floristán
Lentigo maligna is the most common type of facial melanoma. Diagnosis is complicated, however, as it shares clinical and dermoscopic characteristics with other cutaneous lesions of the face. Reflectance confocal microscopy is an imaging technique that permits the visualization of characteristic features of lentigo maligna. These include a disrupted honeycomb pattern and pagetoid cells with a tendency to show folliculotropism. These cells typically have a dendritic morphology, although they may also appear as round cells measuring over 20μm with atypical nuclei...
September 7, 2016: Actas Dermo-sifiliográficas
Morgan K Richards, Josephine Czechowicz, Adam B Goldin, Kenneth W Gow, John Doski, Melanie Goldfarb, Jed Nuchtern, Monica Langer, Elizabeth A Beierle, Sanjeev Vasudevan, Deepti Gupta, Sanjay R Parikh
Importance: Melanoma in children is rare, accounting for approximately 2% of all pediatric malignant neoplasms. However, for the past 30 years, the incidence of melanoma in those younger than 20 years has been increasing. Location of the primary tumor has been shown to be an important prognostic factor, with melanomas of the scalp and neck conferring a worse prognosis than those originating at other sites. Objective: To examine the survival, demographic, tumor, and treatment characteristics of pediatric head and neck melanoma...
September 8, 2016: JAMA Otolaryngology—Head & Neck Surgery
Thaís Corsetti Grazziotin, Ivette Alarcon, Renan Rangel Bonamigo, Cristina Carrera, Miriam Potrony, Paula Aguilera, Joan-Anton Puig-Butillé, Johanna Brito, Celia Badenas, Llúcia Alós, Josep Malvehy, Susana Puig
Importance: The improved knowledge of clinical, morphologic, and epidemiologic heterogeneity of melanoma in the context of multiple primary and familial melanomas may improve prevention, diagnosis, and prognosis of melanoma. Objective: To characterize reflectance confocal microscopy (RCM) morphologic patterns of melanomas in multiple primary and familial melanomas. Design, Setting, and Participants: In this cross-sectional, retrospective study, patients in a hospital-based referral center were recruited from March 1, 2010, through August 31, 2013; data analysis was conducted from September 1, 2013, through May 31, 2014...
October 1, 2016: JAMA Dermatology
Yu Wang, Yinjun Zhao, Shuangge Ma
BACKGROUND: Melanoma accounts for the majority of skin cancer deaths. It has over thirty different subtypes. Different races have been observed to differ in multiple aspects of melanoma. METHODS: SEER (Surveillance, Epidemiology, and End Results) data on six major subtypes, namely melanoma in situ (MIS), superficial spreading melanoma (SSM), nodular melanoma (NM), lentigo maligna melanoma (LMM), acral lentiginous melanoma malignant (ALM), and malignant melanoma NOS (NOS), were analyzed...
2016: BMC Cancer
Per Helsing, Trude Eid Robsahm, Linda Vos, Syed Mohammad Husain Rizvi, Lars Andreas Akslen, Marit Bragelien Veierød
BACKGROUND: Most studies of cutaneous head and neck melanomas (CHNM) have reported poorer survival in CHNM compared with other sites, especially on the scalp/neck. OBJECTIVE: We sought to compare patient and tumor characteristics between CHNM and cutaneous trunk and extremity melanomas and between CHNM locations (face/ear vs scalp/neck, anterior vs posterior), and to study prognostic factors in patients with CHNM. METHODS: We studied all CHNM (n = 1074) from 8120 cases of cutaneous melanomas diagnosed in Norway in 2008 to 2012...
November 2016: Journal of the American Academy of Dermatology
Karolina Gadaldi, Laurence Feldmeyer, Nikhil Yawalkar, Robert E Hunger
BACKGROUND: Lentigo maligna (LM) is a melanoma in situ on sun-damaged skin, with a strong predilection to the head and neck area of the elderly. Many therapeutic modalities have been proposed in the treatment of this pathology, including surgery, cryotherapy, radiotherapy and topical imiquimod. Up to date surgical excision remains the treatment of choice with the lowest recurrence rate. Recently, a new topical treatment with ingenol mebutate has been described to be efficacious and well tolerated in the treatment of melanoma in situ...
2016: Dermatology: International Journal for Clinical and Investigative Dermatology
Steven J Edwards, Ifigeneia Mavranezouli, George Osei-Assibey, Gemma Marceniuk, Victoria Wakefield, Charlotta Karner
BACKGROUND: Skin cancer is one of the most common cancers in the UK. The main risk factor is exposure to ultraviolet radiation from sunlight or the use of sunbeds. Patients with suspicious skin lesions are first examined with a dermoscope. After examination, those with non-cancerous lesions are discharged, but lesions that are still considered clinically suspicious are surgically removed. VivaScope(®) is a non-invasive technology designed to be used in conjunction with dermoscopy to provide a more accurate diagnosis, leading to fewer biopsies of benign lesions or to provide more accurate presurgical margins reducing the risk of cancer recurrence...
July 2016: Health Technology Assessment: HTA
João Goulão, João Alves
An 86-year-old woman was referred for treatment of a lentigo maligna melanoma on the left earlobe, confirmed by cutaneous biopsy. The resulting surgical defect involved the earlobe's full thickness. The authors outline a simple method for reconstructing the entire lobe in one stage, without grafts, whilst offering a pleasant appearance. Earlobe deformity may be congenital or, more often, acquired due to trauma, burns or surgery. Ear lobules are an important reference point for facial symmetry and they serve decorative purposes like wearing earrings...
May 2016: Anais Brasileiros de Dermatologia
B Pérez Tato, Á Juarranz, L Nájera, M C Mihm, P Fernández, Y Gilaberte, S González
BACKGROUND: Neuropeptide Y (NPY) is involved in the carcinogenesis of different tumours, especially neural crest-derived tumours. OBJECTIVE: The aim of our study is to investigate the expression of NPY on melanoma and its relation with prognostic histological parameters and survival. METHODS: This is a retrospective observational study of two independent series, with a total of 79 primary melanomas, diagnosed in two independent University Hospitals in Spain, from January 2000 to December 2004...
July 18, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
Joshua B Wilson, Hobart W Walling, Richard K Scupham, Andrew K Bean, Roger I Ceilley, Kirsten E Goetz
INTRODUCTION: Lentigo maligna is a form of in situ melanoma that occurs commonly on sun-exposed skin of middle-aged to elderly adults. Margin-control surgery offers the highest cure rate for lentigo maligna/lentigo maligna melanoma. MATERIALS AND METHODS: Charts from the authors' private office from the 20-year period from January 1986 to December 2005 were reviewed to identify patients with histologically confirmed lentigo maligna or lentigo maligna melanoma treated by staged excision...
June 2016: Journal of Clinical and Aesthetic Dermatology
François Kuonen, Josef Aschwanden, Dominick J Dimaio, Dirk M Elston, Michel Gilliet, Daniel Hohl, Olivier Gaide
BACKGROUND: Melanocytic tumours which colonise basal cell carcinomas (BCC) may be considered as either lentigo maligna (LM) (in situ) or invasive melanomas. OBJECTIVES: To highlight the diagnostic approach and long-term prognosis of LM which colonises BCC. MATERIALS AND METHODS: Using Satter et al.'s classification, we identified a case of BCC colonised by LM and reviewed similar cases in the literature with long-term follow-up. RESULTS: In the absence of melanocytic extension beyond the lamina propria of the BCC compartment, mixed tumours may be considered as LM colonising the BCC, allowing for less invasive surgery...
July 1, 2016: European Journal of Dermatology: EJD
Karin Greveling, Marlies Wakkee, Tamar Nijsten, Renate R van den Bos, Loes M Hollestein
Lentigo maligna (LM) is considered a precursor to LM melanoma (LMM). We assessed trends in LM and LMM incidence rates between 1989 and 2013 in the Netherlands, and estimated the risk of an LMM after LM. Data on newly diagnosed LM and LMM were obtained from the Netherlands Cancer Registry and PALGA: Dutch Pathology Registry. Age-standardized incidence rates (European standardized rate), estimated annual percentage changes, and the cumulative incidence of LMM after LM were calculated. Between 1989 and 2013, 10,545 patients were diagnosed with a primary LM and 2,898 with a primary LMM in the Netherlands...
October 2016: Journal of Investigative Dermatology
L Martínez-Leboráns, J Garcías-Ladaria, V Oliver-Martínez, V Alegre de Miquel
Lentigo maligna is the most common form of in situ melanoma. It is most often found on the head and neck, and its clinical and dermoscopic features in this location have been extensively described in the literature. We present a series of 14 patients diagnosed with extrafacial lentigo maligna and lentigo maligna melanoma at Hospital General de Valencia and Hospital de Manacor in Spain, and describe the clinical, dermoscopic, and histologic features observed. Most of the melanomas were located on the upper limbs; the next most common locations were the trunk and the lower limbs...
October 2016: Actas Dermo-sifiliográficas
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