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      High-frequency ultrasound for diagnosing skin cancer in adults

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          Abstract

          Early, accurate detection of all skin cancer types is essential to guide appropriate management and to improve morbidity and survival. Melanoma and squamous cell carcinoma (SCC) are high-risk skin cancers with the potential to metastasise and ultimately lead to death, whereas basal cell carcinoma (BCC) is usually localised, with potential to infiltrate and damage surrounding tissue. Anxiety around missing early curable cases needs to be balanced against inappropriate referral and unnecessary excision of benign lesions. Ultrasound is a non-invasive imaging technique that relies on the measurement of sound wave reflections from the tissues of the body. At lower frequencies, the deeper structures of the body such as the internal organs can be visualised, while high-frequency ultrasound (HFUS) with transducer frequencies of 20 MHz or more has a much lower depth of tissue penetration but produces a higher resolution image of tissues and structures closer to the skin surface. Used in conjunction with clinical and/or dermoscopic examination of suspected skin cancer, HFUS may offer additional diagnostic information compared to other technologies.

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          Melanoma staging: Evidence-based changes in the American Joint Committee on Cancer eighth edition cancer staging manual

          John F. Thompson, Grant A. McArthur, Lauren E. Haydu … (2017)
          Answer questions and earn CME/CNE To update the melanoma staging system of the American Joint Committee on Cancer (AJCC) a large database was assembled comprising >46,000 patients from 10 centers worldwide with stages I, II, and III melanoma diagnosed since 1998. Based on analyses of this new database, the existing seventh edition AJCC stage IV database, and contemporary clinical trial data, the AJCC Melanoma Expert Panel introduced several important changes to the Tumor, Nodes, Metastasis (TNM) classification and stage grouping criteria. Key changes in the eighth edition AJCC Cancer Staging Manual include: 1) tumor thickness measurements to be recorded to the nearest 0.1 mm, not 0.01 mm; 2) definitions of T1a and T1b are revised (T1a, <0.8 mm without ulceration; T1b, 0.8-1.0 mm with or without ulceration or <0.8 mm with ulceration), with mitotic rate no longer a T category criterion; 3) pathological (but not clinical) stage IA is revised to include T1b N0 M0 (formerly pathologic stage IB); 4) the N category descriptors "microscopic" and "macroscopic" for regional node metastasis are redefined as "clinically occult" and "clinically apparent"; 5) prognostic stage III groupings are based on N category criteria and T category criteria (ie, primary tumor thickness and ulceration) and increased from 3 to 4 subgroups (stages IIIA-IIID); 6) definitions of N subcategories are revised, with the presence of microsatellites, satellites, or in-transit metastases now categorized as N1c, N2c, or N3c based on the number of tumor-involved regional lymph nodes, if any; 7) descriptors are added to each M1 subcategory designation for lactate dehydrogenase (LDH) level (LDH elevation no longer upstages to M1c); and 8) a new M1d designation is added for central nervous system metastases. This evidence-based revision of the AJCC melanoma staging system will guide patient treatment, provide better prognostic estimates, and refine stratification of patients entering clinical trials. CA Cancer J Clin 2017;67:472-492. © 2017 American Cancer Society.
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            A systematic review of worldwide incidence of nonmelanoma skin cancer.

            A. Lomas, J Leonardi-Bee, F Bath-Hextall (2012)
              Nonmelanoma skin cancer (NMSC) is the most common cancer affecting white-skinned individuals and the incidence is increasing worldwide. This systematic review brings together 75 studies conducted over the past half century to look at geographical variations and trends worldwide in NMSC, and specifically incidence data are compared with recent U.K. cancer registry data. Following the development of a comprehensive search strategy, an assessment tool was adapted to look at the methodological quality of the eligible studies. Most of the studies focused on white populations in Europe, the U.S.A. and Australia; however, limited data were available for other skin types in regions such as Africa. Worldwide the incidence for NMSC varies widely with the highest rates in Australia [>1000/100, 000 person-years for basal cell carcinoma (BCC)] and the lowest rates in parts of Africa (< 1/100, 000 person-years for BCC). The average incidence rates in England were 76·21/100, 000 person-years and 22·65/100, 000 person-years for BCC and squamous cell carcinoma (SCC), respectively, with highest rates in the South-West of England (121·29/100, 000 person-years for BCC and 33·02/100, 000 person-years for SCC) and lowest rates by far in London (0·24/100, 000 person-years for BCC and 14·98/100, 000 person-years for SCC). The incidence rates in the U.K. appear to be increasing at a greater rate when compared with the rest of Europe. NMSC is an increasing problem for health care services worldwide. This review highlights a requirement for prevention studies in this area and the issues surrounding incomplete NMSC registration. Registration standards of NMSC should be improved to the level of other invasive disease. © 2012 The Authors. BJD © 2012 British Association of Dermatologists.
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              International trends in the incidence of malignant melanoma 1953-2008--are recent generations at higher or lower risk?

              Friederike Erdmann, Joannie Lortet-Tieulent, Joachim Schüz … (2013)
              The incidence of cutaneous malignant melanoma has steadily increased over the past 50 years in predominately fair-skinned populations. This increase is reported to have leveled off recently in several Northern and Western European countries, Australia, New Zealand and in North America. We studied the global patterns and time trends in incidence of melanoma by country and sex, with a focus on and age- and cohort-specific variations. We analyzed the incidence data from 39 population-based cancer registries, examining all-ages and age-truncated standardized incidence rates of melanoma, estimating the annual percentage change and incidence rate ratios from age-period-cohort models. Incidence rates of melanoma continue to rise in most European countries (primarily Southern and Eastern Europe), whereas in Australia, New Zealand, the U.S., Canada, Israel and Norway, rates have become rather stable in recent years. Indications of a stabilization or decreasing trend were observed mainly in the youngest age group (25-44 years). Rates have been rising steadily in generations born up to the end of the 1940s, followed by a stabilization or decline in rates for more recently born cohorts in Australia, New Zealand, the U.S., Canada and Norway. In addition to the birth cohort effect, there was a suggestion of a period-related influence on melanoma trends in certain populations. Although our findings provide support that primary and secondary prevention can halt and reverse the observed increasing burden of melanoma, they also indicate that those prevention measures require further endorsement in many countries. Copyright © 2012 UICC.
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                Author and article information

                Journal
                Title: Cochrane Database of Systematic Reviews
                Publisher: Wiley
                ISSN (Electronic): 14651858
                Publication date (Electronic): December 04 2018
                Affiliations
                [1 ]University of Birmingham; Institute of Applied Health Research; Birmingham UK B15 2TT
                [2 ]University Hospitals Birmingham NHS Foundation Trust and University of Birmingham; NIHR Birmingham Biomedical Research Centre; Birmingham UK
                [3 ]Institute of Cancer Research and The Royal Marsden NHS Foundation Trust; Joint Department of Physics; 15 Cotswold Road Sutton UK SM2 5NG
                [4 ]The University of Nottingham; c/o Cochrane Skin Group; Nottingham UK
                [5 ]Churchill Hospital; Department of Dermatology; Old Road Headington Oxford UK OX3 7LE
                [6 ]University of Nottingham; Centre of Evidence Based Dermatology; Queen's Medical Centre Derby Road Nottingham UK NG7 2UH
                Article
                DOI: 10.1002/14651858.CD013188
                PMC ID: 6516989
                PubMed ID: 30521683
                SO-VID: d6d4cf33-3079-4a47-b9af-e40312752add
                Copyright © © 2018
                History

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