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Acral melanoma

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https://www.readbyqxmd.com/read/28107203/clinicopathological-significance-of-intratumoral-and-peritumoral-lymphocytes-and-lymphocyte-score-based-on-the-histologic-subtypes-of-cutaneous-melanoma
#1
Cheol Keun Park, Sang Kyum Kim
The presence of tumor infiltrating lymphocytes is a favorable prognostic factor in cutaneous melanoma, but their clinicopathological significance in the intratumoral compartment compared to the peritumoral compartment is unclear. We investigated the clinicopathologic significance of tumor-infiltrating lymphocytes and lymphocyte score in intra- and peritumoral compartments in 177 Korean patients who had undergone surgical excision of cutaneous melanoma. No significant correlation was observed between various clinicopathologic factors and the presence of intratumoral lymphocytes...
January 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28092366/malignant-melanoma-of-sun-protected-sites-a-review-of-clinical-histological-and-molecular-features
#2
Emily A Merkel, Pedram Gerami
In most cases of cutaneous melanoma, ultraviolet (UV) radiation is recognized as a prominent risk factor. Less is known regarding the mechanisms of mutagenesis for melanoma arising in sun-protected sites, such as acral and mucosal melanoma. Acral and mucosal melanoma share many common features, including a late age of onset, a broad radial growth phase with prominent lentiginous growth, the presence of field cancerization cells, and, in most cases, lack of a precursor nevus. In addition to early chromosomal instability, many of the same genes are also involved in these two distinct melanoma subtypes...
January 16, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28087024/acral-melanoma
#3
Flavia Persechino, Caterina Longo, Elisa Benati, Stefania Borsari, Mara Lombardi, Simonetta Piana, Giuseppe Argenziano, Elvira Moscarella
No abstract text is available yet for this article.
February 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28087014/parallel-globules-on-the-ridges-caused-by-transepidermal-elimination-of-melanocytic-nests-a-new-dermoscopic-pattern-of-acral-melanoma
#4
Giovanni Ghigliotti, Elena De Col, Franco Rongioletti
No abstract text is available yet for this article.
February 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28073583/clinical-factors-associated-with-subclinical-spread-of-in-situ-melanoma
#5
Thuzar M Shin, Jeremy R Etzkorn, Joseph F Sobanko, David J Margolis, Joel M Gelfand, Emily Y Chu, Rosalie Elenitsas, Waqas R Shaikh, Christopher J Miller
BACKGROUND: Subclinical spread of in situ melanoma occurs at a wide frequency, ranging from 12% to 71%. OBJECTIVE: To identify clinical factors associated with subclinical spread of in situ melanoma. METHODS: We used a retrospective, cross-sectional study of 674 consecutive in situ melanomas to examine 627 patients treated with Mohs surgery and melanoma antigen recognized by T cells 1 immunostaining. The presence of subclinical spread was correlated with clinical characteristics...
January 7, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28067894/unexpected-uvr-and-non-uvr-mutation-burden-in-some-acral-and-cutaneous-melanomas
#6
Robert V Rawson, Peter A Johansson, Nicholas K Hayward, Nicola Waddell, Ann-Marie Patch, Serigne Lo, John V Pearson, John F Thompson, Graham J Mann, Richard A Scolyer, James S Wilmott
Ultraviolet radiation (UVR) mutagenesis causes nearly all cutaneous melanomas, however, since UVR signatures are largely absent in acral melanoma, as well as melanoma in sun-protected sites, the cause of these melanomas is unknown. Whole-genome sequencing data generated as part of the Australian Melanoma Genome Project was supplemented with a detailed histopathological assessment with the melanomas then classified as UVR or non-UVR related, based on their mutation signatures. The clinicopathological characteristics of melanomas with mutation signatures for their subtype were compared...
January 9, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28026870/vulvar-and-vaginal-melanoma-a-unique-subclass-of-mucosal-melanoma-based-on-a-comprehensive-molecular-analysis-of-51-cases-compared-with-2253-cases-of-nongynecologic-melanoma
#7
June Y Hou, Caitlin Baptiste, Radhika Bangalore Hombalegowda, Ana I Tergas, Rebecca Feldman, Nathaniel L Jones, Sudeshna Chatterjee-Paer, Ama Bus-Kwolfski, Jason D Wright, William M Burke
BACKGROUND: Optimal treatments for vulvar and vaginal melanomas (VVMs) have not been identified. Herein, the authors compare molecular profiles between VVM and nongynecologic melanoma (NGM) subtypes with the objective of identifying novel, targetable biomarkers. METHODS: In total, 2304 samples of malignant melanoma that were submitted to Caris Life Sciences between 2009 and 2015 were reviewed. In situ hybridization and immunohistochemistry were used to assess copy numbers and protein expression of selected genes...
December 27, 2016: Cancer
https://www.readbyqxmd.com/read/28012358/cystic-metastatic-lymph-nodes-in-malignant-melanoma-a-case-report
#8
Eralda Mema, Emma Cho, Richard Ha, Bret Taback
Melanoma is a rare type of skin cancer with a high mortality rate. Local invasion and metastatic spread are primarily responsible for the morbidity and mortality of melanoma. While metastatic lesions vary from cystic to solid, cystic metastases can be challenging to diagnose. Up to date, there are only a few published studies that describe cystic metastases in melanoma and other conditions such as lymphoma, squamous cell carcinoma and thyroid papillary carcinoma. We describe a case of cystic metastatic axillary lymph nodes in a patient with subungual acral lentiginous melanoma and the challenges to reaching an accurate diagnosis...
December 15, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27926588/incidence-trends-and-clinical-pathological-characteristics-of-invasive-cutaneous-melanoma-from-1980-to-2010-in-the-canton-of-zurich-switzerland
#9
Remo Minini, Sabine Rohrmann, Ralph Braun, Dimitri Korol, Silvia Dehler
The aims of this paper are to describe the incidence trends of invasive cutaneous melanoma in the Canton of Zurich and to evaluate clinical and pathological factors such as cancer subtype, localization, age and Breslow thickness. A retrospective analysis was carried out with data from the population-based Cancer Registry of Zurich and Zug located in Zurich. A total of 8469 cases in 8034 different patients of invasive cutaneous melanoma were registered for the period 1980-2010 in the Canton of Zurich. Incidence trends were age standardized to the European standard population...
December 6, 2016: Melanoma Research
https://www.readbyqxmd.com/read/27911979/clinicopathological-features-and-clinical-outcomes-associated-with-tp53-and-braf-n-on-v-600-mutations-in-cutaneous-melanoma-patients
#10
Dae Won Kim, Lauren E Haydu, Aron Y Joon, Roland L Bassett, Alan E Siroy, Michael T Tetzlaff, Mark J Routbort, Rodabe N Amaria, Jennifer A Wargo, Jennifer L McQuade, Jan Kemnade, Patrick Hwu, Scott E Woodman, Jason Roszik, Kevin B Kim, Jeffrey E Gershenwald, Alexander J Lazar, Michael A Davies
BACKGROUND: BRAF(V600) , NRAS, TP53, and BRAF(Non-V600) are among the most common mutations detected in non-acral cutaneous melanoma patients. Although several studies have identified clinical and pathological features associated with BRAF(V600) and NRAS mutations, limited data are available regarding the correlates and significance of TP53 and BRAF(Non-V600) mutations. METHODS: This study analyzed the patient demographics, primary tumor features, and clinical outcomes of a large cohort of non-acral cutaneous melanoma patients who had undergone clinically indicated molecular testing (n = 926)...
December 2, 2016: Cancer
https://www.readbyqxmd.com/read/27883956/efficacy-of-braf-inhibitors-in-asian-metastatic-melanoma-patients-potential-implications-of-genomic-sequencing-in-braf-mutated-melanoma
#11
Hee Kyung Kim, Sunyoung Lee, Kyung Kim, Mi Hwa Heo, Hansang Lee, Jinhyun Cho, Nayoung K D Kim, Woongyang Park, Su Jin Lee, Jung Han Kim, Kee-Taek Jang, Sang-Hee Choi, Jeeyun Lee
BACKGROUND: The BRAF inhibitors vemurafenib and dabrafenib are currently the standard treatment for metastatic melanoma with BRAF V600 mutations. However, given the rarity of noncutaneous melanoma, including acral and mucosal subtypes, the efficacy of BRAF inhibitors for this subset of patients has not been extensively investigated. Acquired resistance generally appears 6 to 8 months after treatment with a BRAF inhibitor, and the mechanism of resistance is not well established. METHODS: We examined treatment outcomes for patients diagnosed with metastatic melanoma and treated with BRAF inhibitors at Samsung Medical Center between April 2013 and December 2015...
December 2016: Translational Oncology
https://www.readbyqxmd.com/read/27873341/immunostain-use-in-the-diagnosis-of-melanomas-referred-to-a-tertiary-medical-center-a-15-year-retrospective-review-2001-2015
#12
Randie H Kim, Shane A Meehan
BACKGROUND: Little is known regarding the clinical practice of immunohistochemistry in the diagnosis of melanoma. We aimed to assess the incidence of immunostain usage by referring pathologists and dermatopathologists in melanoma cases sent for consultative review. As a secondary objective, associations between immunostain use and specific melanoma characteristics were also evaluated. METHODS: This is a retrospective review of consultation reports of referred melanomas at a tertiary academic center in New York, NY from 2001 to 2015...
November 22, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27870726/melanocytic-nevi-of-special-sites
#13
Christine S Ahn, Analia Guerra, Omar P Sangüeza
Melanocytic nevi located on specific regions of the body can demonstrate unusual histopathological features such as asymmetry, irregular nesting patterns, pagetoid spread, cytologic atypia, and rarely, mitotic activity. However, despite these features that may raise concern for malignant melanoma, these lesions follow a benign clinical course and do not require intervention. Also known as nevi of special sites or nevi with site-related atypia, these melanocytic nevi were initially described on acral sites and genitalia...
December 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27864876/kinase-gene-fusions-in-defined-subsets-of-melanoma
#14
Jacqueline Turner, Kasey Couts, Jamie Sheren, Siriwimon Saichaemchan, Witthawat Ariyawutyakorn, Izabela Avolio, Ethan Cabral, Magdelena Glogowska, Carol Amato, Steven Robinson, Jennifer Hintzsche, Allison Applegate, Eric Seelenfreund, Rita Gonzalez, Keith Wells, Stacey Bagby, John Tentler, Aik-Choon Tan, Joshua Wisell, Marileila Varella-Garcia, William Robinson
Genomic rearrangements resulting in activating kinase fusions have been increasingly described in a number of cancers including malignant melanoma, but their frequency in specific melanoma subtypes has not been reported. We used break-apart fluorescence in-situ hybridization (FISH) to identify genomic rearrangements in tissues from 59 patients with various types of malignant melanoma including acral lentiginous, mucosal, superficial spreading, and nodular. We identified four genomic rearrangements involving the genes BRAF, RET, and ROS1...
November 19, 2016: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/27861496/clinical-characteristics-of-malignant-melanoma-in-southwest-china-a-single-center-series-of-82-consecutive-cases-and-a-meta-analysis-of-958-reported-cases
#15
Jia Yu, Xue Luo, Hui Huang, Zhifang Zhai, Zhu Shen, Hui Lin
PURPOSE: The present study determined the clinical characteristics and prognostic factors in patients with malignant melanoma based on a series of 82 cases from January 2009 to December 2014 in Southwest Hospital and a meta-analysis (including 12 articles) involving 958 patients in China. MATERIALS AND METHODS: The database elements included basic demographic data and prognosticators which were extracted from medical records. Statistical analyses of survival, and multivariate analyses of factors associated with survival were performed using the Kaplan-Meier method, and the Cox proportional hazard model, respectively...
2016: PloS One
https://www.readbyqxmd.com/read/27858163/expression-of-piwil3-in-primary-and-metastatic-melanoma
#16
Thilo Gambichler, Christina Kohsik, Ann-Kathrin Höh, Kerstin Lang, Heiko U Käfferlein, Thomas Brüning, Eggert Stockfleth, Markus Stücker, Max Dreißigacker, Michael Sand
PURPOSE: The PIWI-interacting RNA machinery in malignant melanoma (MM) has not been sufficiently studied. We aimed to investigate the PIWIL3 expression profiles in primary melanomas and metastases of MM including a correlation with clinical data. METHODS: We studied 161 primary melanomas, 45 lymph node metastases, and 16 distant metastases of 183 patients with MM. We used immunohistochemistry to assess PIWIL3 protein expression in situ. The relationship between the immunoreactivity of PIWIL3 and clinical data was statistically evaluated...
November 17, 2016: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/27785785/epidemiological-trends-and-clinicopathological-features-of-cutaneous-melanoma-in-sporadic-and-xeroderma-pigmentosum-tunisian-patients
#17
Chokri Naouali, Meriem Jones, Imen Nabouli, Manel Jerbi, Haifa Tounsi, Mariem Ben Rekaya, Melika Ben Ahmed, Balkiss Bouhaouala, Olfa Messaoud, Aida Khaled, Mohamed Zghal, Sonia Abdelhak, Samir Boubaker, Houda Yacoub-Youssef
BACKGROUND: Epidemiological features and trends of cutaneous melanoma (CM) in North-African populations remain unclear. Those populations are of particular interest as they belong to a mosaic of various other origins (sub-Saharan, European Ancestry, and North-African Berbers). The aim of this study is to draw epidemiological profile and clinicopathological features of CM in the Tunisian population. METHODS: Incidence analyses were based on data from regional cancer registries...
January 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/27746632/expression-of-phosphatase-and-tensin-homologue-phospho-akt-and-p53-in-acral-benign-and-malignant-melanocytic-neoplasms-benign-nevi-dysplastic-nevi-and-acral-melanomas
#18
So Min Lyu, Ju Yeon Wu, Ji Yeon Byun, Hae Young Choi, Sang Hee Park, You Won Choi
BACKGROUND: The role of the phosphatidylinositol-3 kinase signaling pathway in the development of acral melanoma has recently gained evidence. Phosphatase and tensin homologue (PTEN), one of the key molecules in the pathway, acts as a tumor suppressor through either an Akt-dependent or Akt-independent pathway. Akt accelerates degradation of p53. OBJECTIVE: We assessed the expression of PTEN, phospho-Akt (p-Akt), and p53 by immunohistochemistry in benign acral nevi, acral dysplastic nevi, and acral melanomas in the radial growth phase and with a vertical growth component...
October 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27745646/acral-melanoma-mimicking-subungual-hematoma
#19
Teresa Deinlein, Rainer Hofmann-Wellenhof, Iris Zalaudek
No abstract text is available yet for this article.
November 2016: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/27689028/cutaneous-melanoma-in-asians
#20
REVIEW
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
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