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    Nevi and lasers: Practical considerations.
    Lasers Surg Med 2017 Nov 21. Epub 2017 Nov 21.
    Dermatology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
    Lasers are increasingly used for elective ablation of melanocytic nevi (MN). However, the associated risks of treating MN with lasers are debated and not well studied. Theoretical risks include inadvertently treating a melanoma mistaken for a nevus, the inability to remove all nevus cells and the possibility for residual cells to undergo malignant transformation, and the difficulty in clinically monitoring the remnant nevus for melanoma progression. Read More

    Gastric and Rectal Metastases from Malignant Melanoma Presenting with Hypochromic Anemia and Treated with Immunotherapy.
    Case Rep Oncol Med 2017 12;2017:2079068. Epub 2017 Oct 12.
    Medical Oncology Unit, Dipartimento di Scienze Chirurgiche, Oncologiche e Stomatologiche, University of Palermo, Palermo, Italy.
    The authors present a case of an 80-year-old Caucasian male with multiple gastric and rectal metastases from malignant melanoma presenting with hypochromic anemia as the sole symptom of disease without evidence of cutaneous and ocular tumor localization. The patient had a medical history positive for malignant lentigo melanoma of the occipital region of the scalp and early stage laryngeal squamous cell carcinoma and prostatic carcinoma treated with radiation therapy. The authors make some considerations on intestinal involvement by metastatic melanoma and discuss the choice of not treating with endoscopic procedures the gastric metastatic lesions most likely responsible for the clinical sign present at diagnosis. Read More

    Specific Targeting of Melanotic Cells with Peptide Ligated Photosensitizers for Photodynamic Therapy.
    Sci Rep 2017 Nov 16;7(1):15750. Epub 2017 Nov 16.
    Experimental Dermatology Group, Institute of Medical Biology, A*STAR, 8- Biomedical Grove, Singapore, Singapore.
    A strategy combining covalent conjugation of photosensitizers to a peptide ligand directed to the melanocortin 1 (MC1) receptor with the application of sequential LED light dosage at near-IR wavelengths was developed to achieve specific cytotoxicity to melanocytes and melanoma (MEL) with minimal collateral damage to surrounding cells such as keratinocytes (KER). The specific killing of melanotic cells by targeted photodynamic therapy (PDT) described in this study holds promise as a potentially effective adjuvant therapeutic method to control benign skin hyperpigmentation or superficial melanotic malignancy such as Lentigo Maligna Melanoma (LMM). Read More

    Multiple primary melanoma: a single centre retrospective review.
    Melanoma Res 2017 Dec;27(6):638-640
    Department of Dermatology, St James' Hospital, Dublin, Republic of Ireland.
    Prognosis has been shown to be worse for patients with multiple primary melanomas than those with a single melanoma. One recent retrospective study showed that older, white men were at higher risk of multiple primary melanomas. In our institution 2057 melanomas were diagnosed between January 1994 and March 2016. Read More

    Correlation of Handheld Reflectance Confocal Microscopy With Radial Video Mosaicing for Margin Mapping of Lentigo Maligna and Lentigo Maligna Melanoma.
    JAMA Dermatol 2017 Oct 11. Epub 2017 Oct 11.
    Dermatology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
    Importance: The management of lentigo maligna (LM) and LM melanoma (LMM) is challenging because of extensive subclinical spread and its occurrence on cosmetically sensitive areas. Reflectance confocal microscopy (RCM) improves diagnostic accuracy for LM and LMM and can be used to delineate their margins.

    Objectives: To evaluate whether handheld RCM with radial video mosaicing (HRCM-RV) offers accurate presurgical assessment of LM and LMM margins. Read More

    A 23-Nucleotide Deletion in STK11 Gene Causes Peutz-Jeghers Syndrome and Malignancy in a Chinese Patient Without a Positive Family History.
    Dig Dis Sci 2017 Nov 6;62(11):3014-3020. Epub 2017 Oct 6.
    Department of Medical Genetics, Naval Medical University, 800 Xiangyin Rd., Shanghai, 200433, China.
    Background And Aims: Peutz-Jeghers syndrome (PJS) is an autosomal-dominant genetic disease caused by mutations in the tumor suppressor gene, STK11, which is characterized by gastrointestinal hamartomas, melanin spots on the lips and the extremities, and an increased risk of developing both gastrointestinal and extraintestinal malignancies.

    Methods And Results: We treated a PJS patient without a positive family history, who possessed typical clinical manifestations including polyp canceration. In order to explore the genotype of this patient, blood samples were collected from all the available family members. Read More

    Synchronous conjunctival melanoma and lentigo maligna melanoma.
    An Bras Dermatol 2017 Jul-Aug;92(4):565-567
    Division of Dermatopathology in the Anatomical Pathology Service at Irmandade da Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.
    Lentigo maligna has an extensive and neoplastic character. It typically progresses slowly and may eventually develop into an invasive melanoma, which is called lentigo maligna melanoma. Ocular melanoma is the second most common type of melanoma. Read More

    Recurrence Rate of Melanoma in Situ when Treated with Serial Disk Staged Excision: A Case Series.
    J Clin Investig Dermatol 2017 Feb 27;5(1). Epub 2017 Feb 27.
    Department of Dermatology, Dermatologic and Mohs Micrographic Surgery Center, San Diego School of Medicine, University of California.
    Background: Cutaneous melanoma is one of the fastest rising cancer diagnoses in recent years. Melanoma in situ (MIS) constitutes a large proportion of all diagnosed melanomas. While surgical excision is considered the standard of therapy, the literature is not clear on which surgical technique minimizes local recurrence. Read More

    Recent development of signaling pathways inhibitors of melanogenesis.
    Cell Signal 2017 Dec 12;40:99-115. Epub 2017 Sep 12.
    College of Pharmacy and Institute of Drug Research and Development, Chungnam National, University, Daejeon 34134, Republic of Korea.
    Human skin, eye and hair color rely on the production of melanin, depending on its quantity, quality, and distribution, Melanin plays a monumental role in protecting the skin against the harmful effect of ultraviolet radiation and oxidative stress from various environmental pollutants. However, an excessive production of melanin causes serious dermatological problems such as freckles, solar lentigo (age spots), melasma, as well as cancer. Hence, the regulation of melanin production is important for controlling the hyper-pigmentation. Read More

    Characterization of Surgical Procedures in the Spanish Mohs Surgery Registry (REGESMOHS) for 2013-2015.
    Actas Dermosifiliogr 2017 Nov 9;108(9):836-843. Epub 2017 Aug 9.
    Unidad de Investigación, Fundación Piel Sana, Academia Española de Dermatología, Madrid, España.
    Introduction: The Spanish Mohs Surgery Registry is used to collect data on the use and outcomes of Mohs micrographic surgery (MMS) in Spain. The aim of this study was to describe perioperative and intraoperative data recorded for MMS procedures performed between July 2013 (when the registry started) and January 2016.

    Material And Methods: Prospective cohort study of data from 18 hospitals. Read More

    Very Rare Amelanotic Lentigo Maligna Melanoma with Skull Roof Invasion.
    Open Access Maced J Med Sci 2017 Jul 19;5(4):458-461. Epub 2017 Jul 19.
    Department of Anesthesiology & Intensive Care Medicine, Emergency Medicine & Pain Management, Hospital Dresden-Friedrichstadt, Academic Teaching Hospital of the Technical University of Dresden, Friedrichstrasse 41, 01067, Dresden, Germany.
    Background: Lentigo malignant melanoma is a melanoma subtype of chronic sun-damaged skin in elderly Caucasians. Amelanotic variants of lentigo malignant are extremely rare.

    Case Presentation: This is a case report of an 80-year-old male patient who presented with a non-pigmented exophytic tumour of his bald head. Read More

    SpectraCam(®) : A new polarized hyperspectral imaging system for repeatable and reproducible in vivo skin quantification of melanin, total hemoglobin, and oxygen saturation.
    Skin Res Technol 2017 Aug 2. Epub 2017 Aug 2.
    Laboratoires Clarins, Pontoise, France.
    Background: An accurate way to determine skin pigmentation is to acquire the spectral reflectance of a skin sample and to quantify chromophores by reverse calculation from physical models of light propagation. Therefore, we tested a new hyperspectral imaging device and software suite, the SpectraCam(®) system, and evaluated its accuracy to quantify skin chromophores.

    Methods: Validation of the SpectraCam(®) system was performed by, firstly, comparing the known and the acquired reflectance spectra of color phantoms. Read More

    Seven Non-melanoma Features to Rule Out Facial Melanoma.
    Acta Derm Venereol 2017 Nov;97(10):1219-1224
    Department of Dermatology, Medical University of Vienna, Wien, Austria.
    Facial melanoma is difficult to diagnose and dermatoscopic features are often subtle. Dermatoscopic non-melanoma patterns may have a comparable diagnostic value. In this pilot study, facial lesions were collected retrospectively, resulting in a case set of 339 melanomas and 308 non-melanomas. Read More

    Beneficial Effect of Low Fluence 1,064 nm Q-Switched Neodymium:Yttrium-Aluminum-Garnet Laser in the Treatment of Senile Lentigo.
    Ann Dermatol 2017 Aug 21;29(4):427-432. Epub 2017 Jun 21.
    Department of Dermatology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
    Background: Low fluence 1,064 nm Q-switched (QS) Neodymium:Yttrium-Aluminum-Garnet (Nd:YAG) laser treatment, also known as laser toning, is widely used for pigmentary disorders. There has been no reliable evaluation of the effect of low fluence 1,064 nm QS Nd:YAG laser for senile lentigo.

    Objective: To investigate the beneficial effect of low fluence 1,064 nm QS Nd:YAG laser in the treatment of senile lentigo on the face. Read More

    Melanoma subtypes demonstrate distinct PD-L1 expression profiles.
    Lab Invest 2017 Sep 24;97(9):1063-1071. Epub 2017 Jul 24.
    Department of Dermatology, Johns Hopkins University School of Medicine, Bloomberg Kimmel Institute for Cancer Immunotherapy, and Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD, USA.
    PD-L1 expression in the tumor immune microenvironment is recognized as both a prognostic and predictive biomarker in patients with cutaneous melanoma, a finding closely related to its adaptive (IFN-γ-mediated) mechanism of expression. Approximately 35% of cutaneous melanomas express PD-L1, however, the expression patterns, levels, and prevalence in rarer melanoma subtypes are not well described. We performed immunohistochemistry for PD-L1 and CD8 on 200 formalin-fixed paraffin-embedded specimens from patients with acral (n=16), mucosal (n=36), uveal (n=103), and chronic sun-damaged (CSD) (n=45) melanomas (24 lentigo maligna, 13 'mixed' desmoplastic, and 8 'pure' desmoplastic melanomas). Read More

    Patients' Characteristics, Histopathological Findings, and Tumor Stage in Different Types of Malignant Melanoma: A Retrospective Multicenter Study.
    Acta Med Iran 2017 May;55(5):316-323
    Department of Dermatopathology, Razi Dermatology Hospital, Tehran University of Medical Sciences, Tehran, Iran. AND Department of Pathology, Cancer Institute, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran. AND Universal Scientific Education and Research Network (USERN), Tehran, Iran.
    Cutaneous malignant melanoma (CMM) is currently the most fatal of skin cancers accounting for 50000 deaths annually. Five distinct melanomas are described histopathologically: superficial spreading, lentigo maligna, nodular, acral lentiginous and mucosal melanoma. The aim of this study was to investigate the characteristics of patients with various types of malignant melanoma and evaluate histopathological findings. Read More

    Dermoscopy of Pigmented Actinic Keratosis of the Face: A Study of 232 Cases.
    Actas Dermosifiliogr 2017 Nov 11;108(9):844-851. Epub 2017 Jul 11.
    Department of Dermatology, University Hospital Hassan II, Fez, Morocco.
    The diagnosis of pigmented actinic keratosis (PAK) is often challenging because of overlapping features with lentigo maligna.

    Objective: To investigate dermoscopic patterns of PAK according to their different evolutionary stages, and to correlate the pattern with clinical characteristics of the patients.

    Methods: Descriptive and analytical study of 232 PAK. Read More

    Amelanotic Lentigo Maligna Melanoma: Mohs Surgery as the Definitive Treatment of an Invisible Tumour.
    J Cutan Med Surg 2017 Jul 1:1203475417719046. Epub 2017 Jul 1.
    1 Department of Dermatology and Skin Science, University of British Columbia, Vancouver, British Columbia, Canada.
    Amelanotic lentigo maligna melanoma represents <2% of melanomas. Diagnosis is delayed owing to the lack of lesion pigmentation and advanced disease at presentation. Excision with appropriate margins is the treatment standard, but the starting point for such margins is often unclear. Read More

    Anatomic mapping and clinicopathologic analysis of benign acral melanocytic neoplasms: A comparison between adults and children.
    J Am Acad Dermatol 2017 Oct 1;77(4):735-745. Epub 2017 Jul 1.
    Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea. Electronic address:
    Background: The clinicopathologic features of benign acral melanocytic neoplasms (BAMNs) remain poorly understood.

    Objective: To define the clinicopathologic features of BAMNs.

    Methods: We analyzed clinical data and mapped BAMNs anatomically. Read More

    Acute exacerbation of myasthenia gravis with topical imiquimod use.
    Proc (Bayl Univ Med Cent) 2017 Jul;30(3):333
    Texas A&M College of Medicine Health Science Center (Saad, Mansouri, Housewright) and the Department of Dermatology, Scott and White Hospital (Mansouri, Housewright), Temple, Texas.
    Imiquimod activates the immune system when applied to a local area. We report a patient with a history of well-controlled myasthenia gravis who was prescribed imiquimod for lentigo maligna. Treatment was halted after 2 weeks when the patient reported itching and irritating sensations in his throat, consistent with previous myasthenia exacerbations. Read More

    Cancer risk in patients with Peutz-Jeghers syndrome: A retrospective cohort study of 336 cases.
    Tumour Biol 2017 Jun;39(6):1010428317705131
    1 Department of Gastroenterology, Clinical College of Air Force General Hospital, Anhui Medical University, Beijing, China.
    Peutz-Jeghers syndrome is a rare autosomal dominant inherited disorder characterized by mucocutaneous pigmentation and hamartomatous gastrointestinal polyposis. A growing body of evidence has shown that Peutz-Jeghers syndrome could cause an increased risk of various cancers, yet the range of cancer risk estimates was wide among different studies. In this retrospective cohort study, 336 patients with Peutz-Jeghers syndrome in China were enrolled. Read More

    Handheld reflectance confocal microscopy to aid in the management of complex facial lentigo maligna.
    Cutis 2017 May;99(5):346-352
    Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, New York, and Department of Dermatology, Weill Cornell Medical College, New York, USA.
    Diagnosis and management of lentigo maligna (LM) and LM melanoma (LMM) is challenging. Novel noninvasive imaging technologies such as reflectance confocal microscopy (RCM) have advanced the ability to better diagnose and monitor challenging lesions. In addition, the new handheld RCM (HRCM) together with the use of videomosaics has allowed an accurate evaluation of large lesions in concave/convex areas of the body (eg, the face). Read More

    Aggressive Skin Cancers Occurring in Patients Treated With the Janus Kinase Inhibitor Ruxolitinib.
    J Drugs Dermatol 2017 May;16(5):508-511

    The Food and Drug Administration approved Ruxolitinib in 2011 for the treatment of primary myelofibrosis. Five-year safety data showed a higher incidence of skin cancer in patients treated with Ruxolitinib compared to best available therapy for myelofibrosis. This report presents a series of five patients with history of myelofibrosis treated with Ruxolitinib who subsequently developed numerous skin cancers with aggressive biological behavior. Read More


    [Overlap syndrome. LEOPARD and neurofibromatosis. A case report].
    Rev Med Inst Mex Seguro Soc 2017 Jul-Aug;55(4):540-543
    Servicio de Terapia Intensiva, Hospital General de Zona 30 "Iztacalco", Instituto Mexicano del Seguro Social, Ciudad de México, México.
    We expose a clinical case of a 43-year-old patient who was attended at the Dermatology service in a general hospital of the Instituto Mexicano del Seguro Social, with a disseminated pattern of lentigines, psychomotor retardation and electrocardiographic abnormalities. Afterwards, we made an analysis of the literature. Read More

    Lentigo maligna of the face: A quantitative simple method to identify individual patient risk probability on dermoscopy.
    Australas J Dermatol 2017 Nov 7;58(4):286-291. Epub 2017 Jun 7.
    Department of Oncological and Preventative Dermatological, San Gallicano Dermatological Institute, IRCCS, Rome, Italy.
    Background/objectives: The clinical and dermoscopic differential diagnosis of flat pigmented facial lesions represents a great challenge for the clinicians. Our aim was to report a quantitative method based on dermoscopic features to better classify pigmented facial lesions.

    Methods: This is a retrospective case-series study that analysed the dermoscopic features of 582 pigmented facial lesions. Read More

    In vivo efficacy of the AKT inhibitor ARQ 092 in Noonan Syndrome with multiple lentigines-associated hypertrophic cardiomyopathy.
    PLoS One 2017 5;12(6):e0178905. Epub 2017 Jun 5.
    Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America.
    Noonan Syndrome with Multiple Lentigines (NSML, formerly LEOPARD syndrome) is an autosomal dominant "RASopathy" disorder manifesting in congenital heart disease. Most cases of NSML are caused by catalytically inactivating mutations in the protein tyrosine phosphatase (PTP), non-receptor type 11 (PTPN11), encoding the SH2 domain-containing PTP-2 (SHP2) protein. We previously generated knock-in mice harboring the PTPN11 mutation Y279C, one of the most common NSML alleles; these now-termed SHP2Y279C/+ mice recapitulate the human disorder and develop hypertrophic cardiomyopathy (HCM) by 12 weeks of age. Read More

    Histopathologic and Immunohistochemical Correlates of Confocal Descriptors in Pigmented Facial Macules on Photodamaged Skin.
    JAMA Dermatol 2017 Aug;153(8):771-780
    Department of Dermatology, Hospital del Mar-Parc de Salut Mar, Univesitat Autònoma de Barcelona, Barcelona, Spain.
    Importance: Pigmented facial macules on photodamaged skin are a clinical, dermoscopic, and histopathologic challenge.

    Objectives: To clinically and dermoscopically characterize, by means of reflectance confocal microscopy (RCM), ambiguous pigmented facial macules and establish a correlation between RCM, histopathologic, and immunohistochemical findings.

    Design, Setting, And Participants: A prospective study of ambiguous pigmented facial macules on photodamaged skin was conducted in a tertiary referral center for dermatology between January 1, 2009, and December 31, 2015. Read More

    Lentigo maligna melanoma with a history of cosmetic treatment: Prevalence, surgical outcomes and considerations.
    Lasers Surg Med 2017 Nov 29;49(9):819-826. Epub 2017 May 29.
    Memorial Sloan Kettering Cancer Center, Dermatology Service, 16 E. 60th Street, 4th Floor Dermatology, New York, New York, 10022.
    Introduction: Lentigo maligna (LM) is melanoma in situ on sun-damaged skin and presents diagnostic challenges due to overlapping features with benign pigmented lesions. Cosmetic treatments may be inadvertently performed on LM. The aim of this study is to estimate the prevalence of LM with prior cosmetic treatment, and evaluate surgical outcomes. Read More

    Longitudinal melanonychia in childhood: a clinical and histopathological review of Korean patients.
    Eur J Dermatol 2017 Jun;27(3):275-280
    Department of Dermatology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
    Longitudinal melanonychia is not frequently observed in children, and few studies exist on longitudinal melanonychia in paediatric patients, especially in Asian populations. We aimed to evaluate the clinical and histological findings of longitudinal melanonychia in Korean paediatric patients. A retrospective review of paediatric patients (≤18 years old) with longitudinal melanonychia who underwent nail biopsy between January 2010 and October 2015 was performed. Read More

    Cochlear implantation and clinical features in patients with Noonan syndrome and Noonan syndrome with multiple lentigines caused by a mutation in PTPN11.
    Int J Pediatr Otorhinolaryngol 2017 Jun 17;97:228-234. Epub 2017 Apr 17.
    Department of Otorhinolaryngology, Head and Neck Surgery, Radboud University Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands; Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.
    Existing literature only reports a few patients with Noonan syndrome (NS) and Noonan syndrome with multiple lentigines (NSML) who underwent cochlear implantation (CI). The present study describes four NS patients and one NSML patient with a PTPN11 mutation. They all had severe to profound hearing loss, and they received a CI. Read More

    Peutz-Jeghers syndrome with intermittent upper intestinal obstruction: A case report and review of the literature.
    Medicine (Baltimore) 2017 Apr;96(17):e6538
    aDepartment of Pediatric Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China bDepartment of Radiology, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China.
    Rationale: Peutz-Jeghers syndrome (PJS) is an autosomal dominant genetic syndrome characterized by a unique type of gastrointestinal hamartomatous polyp associated with oral and anal mucocutaneous pigmentations. Peutz-Jeghers polyps occur most numerously in the small intestine but frequently in the colon and stomach, only a few cases have been reported in the duodenum.

    Patient Concern: A further family history survey discovered 10 out of 14 members of the family (in 4 generations) had mucocutaneous pigmentations, but many of them were living in rural areas where they had no access to specialized medical services, so none were checked with endoscopy for polyps of hamartoma. Read More

    Topography of Protein Kinase C βII in Benign and Malignant Melanocytic Lesions.
    Int J Surg Pathol 2017 Sep 24;25(6):497-501. Epub 2017 Apr 24.
    2 Laboratory of Pathology, Division of Morphology, University of Crete, Heraklion, Greece.
    Background: Protein kinase C βII promotes melanogenesis and affects proliferation of melanocytic cells but is frequently absent or decreased in melanoma cells in vitro.

    Objective: To investigate PKC-βII expression and spatial distribution within a lesion in various benign and malignant melanocytic proliferations.

    Methods: Expression of PKC-βII was semiquantitatively assessed in the various existing compartments (intraepidermal [not nested], junctional [nested], and dermal) of benign (n = 43) and malignant (n = 28) melanocytic lesions by immunohistochemistry. Read More

    Noninvasive RCM for Differentiation of Melanotic Macules From Melanocytic Lesions-Blinded Evaluation of a Series of 42 Pigmented Macules.
    Dermatol Surg 2017 Jul;43(7):911-919
    *Department of Dermatology, Paracelsus Medical University of Salzburg, Salzburg, Austria; †Department of Dermatology, Medical University of Graz, Graz, Austria, Europe.
    Background: Differentiation of melanotic macules from melanocytic lesions, most importantly of melanoma, is a common problem on clinical-dermoscopic examination.

    Objective: To assess the value of noninvasive reflectance confocal microscopy (RCM) in the differential diagnosis of melanotic macules and melanocytic lesions.

    Patients And Methods: Reflectance confocal microscopy images of 42 pigmented macules on mucocutaneous junctions of genitalia and lips, including 31 melanotic macules, 6 nevi, and 5 melanomas, were retrospectively and independently assessed in a blinded manner by one expert observer and 2 less experienced observers together. Read More

    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).
    Medicine (Baltimore) 2017 Apr;96(15):e6258
    aDepartment of Surgery, Saint Barnabas Medical Center, Livingston, NJ bSaint George's University School of Medicine, Grenada, West Indies cDepartment of Surgery, New Jersey Medical School, Rutgers University, Newark, NJ dDepartment of Surgery, Banner MD Anderson Cancer Center, Gilbert, AZ.
    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. Read More

    Coumestrol Down-Regulates Melanin Production in Melan-a Murine Melanocytes through Degradation of Tyrosinase.
    Biol Pharm Bull 2017 ;40(4):535-539
    Amorepacific R&D Corporation Center.
    Pigmentation reflects skin darkening caused by melanin production, but excessive melanin synthesis may cause problems, such as melasma, solar lentigo, dark spots, and freckles. Considerable effort has been devoted to alleviating these undesired symptoms through the development of safe and effective depigmenting agents. Coumestrol, a plant-derived natural isoflavone with an estrogen-like structure and actions, is known to have anti-aging ability, but its potential depigmenting efficacy has not been evaluated. Read More

    Tumoral Melanosis Associated with Pembrolizumab-Treated Metastatic Melanoma.
    Cureus 2017 Feb 13;9(2):e1026. Epub 2017 Feb 13.
    Department of Dermatology, University of California, San Diego.
    Tumoral melanosis is a form of completely regressed melanoma that usually presents as darkly pigmented lesions suspicious for malignant melanoma. Histology reveals dense dermal and subcutaneous infiltration of melanophages. Pembrolizumab is an antibody directed against programmed death receptor-1 (PD1) and is frontline treatment for advanced melanoma. Read More

    Reconstruction of Combined Upper and Lower Eyelid Defects in a Patient With Lentigo Maligna.
    Dermatol Surg 2017 05;43 Suppl 1:S111-S114
    *Department of Ophthalmology, Hospital de l´Espearnça, Parc de Salut Mar, Barcelona, Spain; †Department of Dermatology, Hospital Universitario de Donostia, San Sebastian, Spain; and ‡Department of Dermatology, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain.

    Correlation between digital epiluminescence microscopy parameters and histopathological changes in lentigo maligna and solar lentigo: A dermoscopic index for the diagnosis of lentigo maligna.
    J Am Acad Dermatol 2017 Feb 26;76(2):234-243. Epub 2016 Oct 26.
    Clinical Epidemiology Unit, Istituto Dermopatico dell'Immacolata, Istituto di Ricovero e Cura a Carattere Scientifico, Fondazione Luigi Maria Monti (IRCCS-FLMM), Rome, Italy.
    Background: The clinical and dermoscopic differentiation between lentigo maligna (LM) and solar lentigo (SL)/initial seborrheic keratosis (SK) may be difficult.

    Objective: Our aim was to identify digital epiluminescence microscopy (DELM)-specific criteria that can be helpful in distinguishing LM from SL/SK and to propose a new model of LM dermoscopic progression based on a study of DELM-histopathological correlation.

    Methods: A total of 167 consecutive doubtful pigmented lesions of the head (105 LM and 62 SL/SK) were studied. Read More

    The Clinical and Histological Effect of a Low-Fluence Q-Switched 1,064-nm Neodymium: Yttrium-Aluminum-Garnet Laser for the Treatment of Melasma and Solar Lentigenes in Asians: Prospective, Randomized, and Split-Face Comparative Study.
    Dermatol Surg 2017 Sep;43(9):1120-1133
    Departments of *Dermatology, and †Cosmetic Dermatology and Photomedicine, Wakayama Medical University, Wakayama, Japan.
    Background: The low-fluence Q-switched 1,064-nm neodymium:yttrium-aluminum-garnet laser (QSNYL) is popular for melasma treatment among Asians.

    Objective: This study was to evaluate the clinical and histological effects of the low-fluence QSNYL for treatment of melasma and solar lentigenes.

    Materials And Methods: In this randomized split-face clinical study, 22 patients with melasma or solar lentigo received low-fluence QSNYL weekly for 10 sessions on one cheek. Read More

    Locally Recurrent Lentigo Maligna and Lentigo Maligna Melanoma: Characteristics and Time to Recurrence After Surgery.
    Dermatol Surg 2017 Jun;43(6):792-797
    *Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, New York; †Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
    Background: Various studies have reported local recurrence (LR) rates after surgical treatment of lentigo maligna (LM) and lentigo maligna melanoma (LMM). However, the time to LR of LM/LMM is not currently known, as few studies report time to LR and have long-term follow-up.

    Objective: To define time to LR in LM/LMM after surgical treatment, and to describe features of observed LR. Read More

    Characteristic features of cutaneous melanoma in a dermatology referral centre in Tehran, Iran.
    Australas J Dermatol 2017 Nov 15;58(4):e228-e231. Epub 2017 Mar 15.
    Department of Dermatology, Tehran University of Medical Sciences, Tehran, Iran.
    Background/objectives: The characteristics of cutaneous melanoma in the Middle-Eastern countries is poorly described. Therefore we conducted this study to determine the characteristics of melanoma in Iran.

    Methods: A retrospective, cross sectional study of melanoma patients seen at a tertiary referral centre, Iran, from May 2004 to October 2014. Read More

    A novel mutation in the STK11 gene causes heritable Peutz-Jeghers syndrome - a case report.
    BMC Med Genet 2017 Feb 23;18(1):19. Epub 2017 Feb 23.
    Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, No. 74 Zhongshan 2 Road, Guangzhou, 510080, China.
    Background: Peutz-Jeghers syndrome (PJS) is a rare disorder characterized by multiple gastrointestinal hamartomatous polyps and mucocutaneous pigmentation. STK11 has been identified as a causative gene for this disease.

    Case Presentation: Herein we report a Chinese Han kindred with PJS. Read More

    Do you know this syndrome? Leopard syndrome.
    An Bras Dermatol 2017 Jan-Feb;92(1):127-129
    Odontology Department of the Pontifícia Universidade Católica de Minas Gerais (PUC Minas) - Belo Horizonte (MG), Brazil.
    Hypertrophic cardiomyopathy is known as Leopard syndrome, which is a mnemonic rule for multiple lentigines (L), electrocardiographic conduction abnormalities (E), ocular hypertelorism (O), pulmonary stenosis (P), abnormalities of genitalia (A), retardation of growth (R), and deafness (D). We report the case of a 12-year-old patient with some of the abovementioned characteristics: hypertelorism, macroglossia, lentigines, hypospadias, cryptorchidism, subaortic stenosis, growth retardation, and hearing impairment. Due to this set of symptoms, we diagnosed Leopard syndrome. Read More

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