8
views
0
recommends
+1 Recommend
1 collections
    0
    shares

      Call for Papers: Advances in Skin Therapy

      Submit here before December 31, 2024

      About Skin Pharmacology and Physiology: 2.8 Impact Factor I 5.2 CiteScore I 0.623 Scimago Journal & Country Rank (SJR)

      • Record: found
      • Abstract: found
      • Article: found

      Dermoscopy of Melanocytic Lesions in Patients Affected by Oculocutaneous Albinism: A Case Series

      research-article

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Background: Although the majority of skin cancers in albino patients consists of squamous and basal cell carcinomas, malignant melanomas have also been described, albeit less frequently. Objective: The aim of our study was to evaluate melanocytic lesions in albino patients to look for any recurrent dermoscopic pattern. Methods: We enrolled 12 consecutive albino patients presenting to our department and examined each patient for the presence of melanocytic nevi with the unaided eye and then with dermoscopy. Melanocytic lesions with suspicious clinical or dermoscopic features were excised and histopathologically evaluated. Results: Analysis of the recorded images permitted us to find two main dermoscopic patterns in this group of patients. The first one was represented by a homogeneous light-brown yellowish pattern associated with comma-like and dotted vessels; the second one consisted of a classical brown reticular pattern frequently associated with central depigmentation and with comma-like vessels. Moreover, based on some atypical dermoscopic features, in 2 patients we excised 3 melanomas in situ (in the same patient) and a thick melanoma (3.2 mm). Conclusions: Dermoscopy may represent a useful tool for the evaluation of melanocytic lesions in albino patients, permitting an early diagnosis of melanoma.

          Related collections

          Most cited references8

          • Record: found
          • Abstract: found
          • Article: not found

          Vascular structures in skin tumors: a dermoscopy study.

          To describe the different vascular structures seen by dermoscopy and to evaluate their association with various melanocytic and nonmelanocytic skin tumors in a large series of cases. Digital dermoscopic images of the lesions were evaluated for the presence of various morphologic types of vessels. Specialized university clinic. From a larger database, 531 excised lesions (from 517 patients) dermoscopically showing any type of vascular structures were included. The frequency and positive predictive value of the different vascular structures seen in various tumors were calculated, and the differences were evaluated by the chi2 or Fisher exact test. Arborizing vessels were seen in 82.1% of basal cell carcinomas, with a 94.1% positive predictive value (P<.001). Dotted vessels were generally predictive for a melanocytic lesion (90.0%, P<.001), and were especially seen in Spitz nevi (77.8% of lesions). In melanoma, linear-irregular, dotted, and polymorphous/atypical vessels were the most frequent vascular structures, whereas milky-red globules/areas were the most predictive ones (77.8%, P = .003). The presence of erythema was most predictive for Clark nevus, whereas comma, glomerular, crown, and hairpin vessels were significantly associated with dermal/congenital nevi, Bowen disease, sebaceous hyperplasia, and seborrheic keratosis, respectively (P<.001 for all). Different morphologic types of vessels are associated with different melanocytic or nonmelanocytic skin tumors. Therefore, the recognition of distinctive vascular structures may be helpful for diagnostic purposes, especially when the classic pigmented dermoscopic structures are lacking.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Allele variations in the OCA2 gene (pink-eyed-dilution locus) are associated with genetic susceptibility to melanoma.

            The occuloalbinism 2 (OCA2) gene, localized at 15q11, encodes a melanosomal transmembrane protein that is involved in the most common form of human occulo-cutaneous albinism, a human genetic disorder characterized by fair pigmentation and susceptibility to skin cancer. We wondered whether allele variations at this locus could influence susceptibility to malignant melanoma (MM). In all, 10 intragenic single-nucleotide polymorphisms (SNPs) were genotyped in 113 patients with melanomas and in 105 Caucasian control subjects with no personal or family history of skin cancer. By comparing allelic distribution between cases and controls, we show that MM and OCA2 are associated (p value=0.030 after correction for multiple testing). Then, a recently developed strategy, the 'combination test' enabled us to show that a combination formed by two SNPs was most strongly associated to MM, suggesting a possible interaction between intragenic SNPs. In addition, the role of OCA2 on MM risk was also detected using a logistic model taking into account the presence of variants of the melanocortin 1 receptor gene (MC1R, a key pigmentation gene) and all pigmentation characteristics as melanoma risk factors. Our data demonstrate that a second pigmentation gene, in addition to MC1R, is involved in genetic susceptibility to melanoma.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Nevus type in dermoscopy is related to skin type in white persons.

              Dermoscopic classification of acquired melanocytic nevi (AMN) is based on the evaluation of 3 main criteria-global pattern, pigment distribution, and color. To determine whether these features are different in AMN in white people with different skin types (STs) according to the Fitzpatrick classification. Digital dermoscopic images of AMN were evaluated, and the correlation of the 3 main dermoscopic criteria with patient ST was analyzed. Consecutive patients were recruited from 7 pigmented lesion clinics between June 1, 2004, and June 30, 2005. Patients For each patient, the ST (I [always burns, never tans] to IV [rarely burns, tans with ease]) was scored, and 1 representative AMN (defined as the AMN showing a dermoscopic typology that is repeatedly seen in the same patient) was selected and photographed. The distribution of the dermoscopic criteria of AMN in patients with different STs was calculated by univariate analysis. Differences in prevalence were tested using the chi(2) test. The correlation between dermoscopic criteria and ST, adjusted for age, sex, and enrolling center, was evaluated by calculating odds ratios and 95% confidence intervals by logistic regression analysis. Of 680 included patients, dermoscopic analysis revealed significant differences in the prevalent nevus pattern in the 4 ST groups. Light brown AMN with central hypopigmentation were associated with ST I, and ST IV was associated with the so-called black nevus (P<.001), typified by reticular pattern, central hyperpigmentation, and dark brown coloration. A significant association was also found between multifocal pattern and ST II and ST III. The dermoscopic nevus type varies according to different ST in white people. This knowledge may have an effect on obtaining for biopsy lesions that exhibit unusual dermoscopic patterns when patient ST is considered.
                Bookmark

                Author and article information

                Journal
                DRM
                Dermatology
                10.1159/issn.1018-8665
                Dermatology
                S. Karger AG
                1018-8665
                1421-9832
                2013
                September 2013
                29 June 2013
                : 226
                : 4
                : 358-361
                Affiliations
                Departments of aDermatology and bPathology, Catholic University of the Sacred Heart, Rome, and cDepartment of Dermatology, University of Turin, Turin, Italy
                Author notes
                *Giacomo Caldarola, MD, Department of Dermatology, Catholic University of the Sacred Heart, Largo F. Vito 8, IT-00168 Rome (Italy), E-Mail giacomocaldarola@libero.it
                Article
                351315 Dermatology 2013;226:358-361
                10.1159/000351315
                23816758
                648334f0-c5f5-49ef-a0bd-612b6f09ffec
                © 2013 S. Karger AG, Basel

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                : 26 November 2012
                : 08 April 2013
                Page count
                Figures: 4, Tables: 1, Pages: 4
                Categories
                Original Paper

                Oncology & Radiotherapy,Pathology,Surgery,Dermatology,Pharmacology & Pharmaceutical medicine
                Oculoalbinism,Dermoscopic pattern,Dermoscopy,Melanoma,Tumors,Nevi

                Comments

                Comment on this article