keyword
MENU ▼
Read by QxMD icon Read
search

Acral melanoma

keyword
https://www.readbyqxmd.com/read/29156643/melanoma-genetic-abnormalities-tumor-progression-clonal-evolution-and-tumor-initiating-cells
#1
REVIEW
Ugo Testa, Germana Castelli, Elvira Pelosi
Melanoma is an aggressive neoplasia issued from the malignant transformation of melanocytes, the pigment-generating cells of the skin. It is responsible for about 75% of deaths due to skin cancers. Melanoma is a phenotypically and molecularly heterogeneous disease: cutaneous, uveal, acral, and mucosal melanomas have different clinical courses, are associated with different mutational profiles, and possess distinct risk factors. The discovery of the molecular abnormalities underlying melanomas has led to the promising improvement of therapy, and further progress is expected in the near future...
November 20, 2017: Medical Sciences: Open Access Journal
https://www.readbyqxmd.com/read/29141225/a-comprehensive-patient-derived-xenograft-collection-representing-the-heterogeneity-of-melanoma
#2
Clemens Krepler, Katrin Sproesser, Patricia Brafford, Marilda Beqiri, Bradley Garman, Min Xiao, Batool Shannan, Andrea Watters, Michela Perego, Gao Zhang, Adina Vultur, Xiangfan Yin, Qin Liu, Ioannis N Anastopoulos, Bradley Wubbenhorst, Melissa A Wilson, Wei Xu, Giorgos Karakousis, Michael Feldman, Xiaowei Xu, Ravi Amaravadi, Tara C Gangadhar, David E Elder, Lauren E Haydu, Jennifer A Wargo, Michael A Davies, Yiling Lu, Gordon B Mills, Dennie T Frederick, Michal Barzily-Rokni, Keith T Flaherty, Dave S Hoon, Michael Guarino, Joseph J Bennett, Randall W Ryan, Nicholas J Petrelli, Carol L Shields, Mizue Terai, Takami Sato, Andrew E Aplin, Alexander Roesch, David Darr, Steve Angus, Rakesh Kumar, Ensar Halilovic, Giordano Caponigro, Sebastien Jeay, Jens Wuerthner, Annette Walter, Matthias Ocker, Matthew B Boxer, Lynn Schuchter, Katherine L Nathanson, Meenhard Herlyn
Therapy of advanced melanoma is changing dramatically. Following mutational and biological subclassification of this heterogeneous cancer, several targeted and immune therapies were approved and increased survival significantly. To facilitate further advancements through pre-clinical in vivo modeling, we have established 459 patient-derived xenografts (PDX) and live tissue samples from 384 patients representing the full spectrum of clinical, therapeutic, mutational, and biological heterogeneity of melanoma...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29104695/multiple-primary-acral-lentiginous-melanomas-mpalm
#3
Miriam González, Georgi Tchernev, Anastasiya Atanasova-Chokoeva, Katlein França, Torello Lotti
We present a rare case of a patient with multiple primary acral lentiginous melanomas of the foot. We would like to highlight the importance of whole-skin examination in all patients, even by the general practitioners, aiming the maximal early detection of acral lentiginous melanomas, considering their rapid progression, early metastatic spread and extremely poor prognosis. It can be extrapolated from current literature; however, that appropriate management of these patients, including staging work and surgical intervention, is to be determined by the individual characteristics of the melanoma and the patient's concomitant risk factors, if any...
October 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29102967/missed-opportunity-to-diagnose-subungual-melanoma-potential-pitfalls
#4
Louise Dunphy, Rossell Morhij, Yash Verma, Andrew Pay
Subungual melanoma, an uncommon form of acral melanoma that arises within the nail matrix, accounts for 1%-3% of all cutaneous melanoma in Caucasians. As subungual melanoma presents in a more disguised manner than cutaneous lesions, increased vigilance is required. It most commonly presents as a discolouration of the nail, nail splitting or nail-bed bleeding. Black pigmentation of the adjacent nail fold, termed Hutchinson's sign, may be a diagnostic clue. Treatment of subungual melanoma remains surgical with wide local excision and amputation primary modalities...
November 3, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29079332/retrospective-study-of-advanced-melanoma-patients-treated-with-ipilimumab-after-nivolumab-analysis-of-60-japanese-patients
#5
Yasuhiro Fujisawa, Koji Yoshino, Atsushi Otsuka, Takeru Funakoshi, Hiroshi Uchi, Taku Fujimura, Shigeto Matsushita, Hiroo Hata, Hisako Okuhira, Ryota Tanaka, Kojiro Nagai, Yoshihiro Ishida, Yoshio Nakamura, Sadanori Furudate, Kentaro Yamamura, Keisuke Imafuku, Yuki Yamamoto
BACKGROUND: Due to resistance and immune-related adverse events (irAE) some melanoma patients require ipilimumab after nivolumab therapy. However, little is known about the result of this switching. OBJECTIVE: Investigate the outcome of ipilimumab switching in Japanese patients. METHODS: We retrospectively collected 60 patients who were treated with ipilimumab after nivolumab from 9 institutes in Japan. Information of the primary tumor, treatment, response, irAE), and survival was collected...
October 24, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29052960/treatment-and-outcomes-of-melanoma-in-asia-results-from-the-national-cancer-centre-singapore
#6
Yi Lin Teh, Wei Lin Goh, Sze Huey Tan, Grace Yong, Alisa Noor Hidayah Sairi, Khee Chee Soo, Johnny Ong, Claramae Chia, Grace Tan, Henry Soeharno, Mann Hong Tan, Michelle Chan, Selvarajan Sathiyamoorthy, Kesavan Sittampalam, Jonathan Teh, Francis Chin, Vijay Sethi, Melissa Teo, Richard Quek, Mohamad Farid
BACKGROUND: Acral melanoma (AM) and mucosal melanoma (MM) make up more than half of melanomas in Asia but comprise only 5% of cases in Caucasians, where cutaneous melanoma (CM) predominates. AM and MM are thought to be genetically and biologically distinct from CM. We report the characteristics and outcomes of melanoma patients from the National Cancer Centre Singapore. METHODS: Case records of 210 patients treated between 2002 and 2014 were reviewed. RESULTS: Median follow-up was 2...
October 20, 2017: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29037804/fluorescence-in-situ-hybridisation-as-an-ancillary-tool-in-the-diagnosis-of-acral-melanoma-a-review-of-44-cases
#7
Jing Su, Wenjuan Yu, Jianying Liu, Jie Zheng, Sixia Huang, Yuchen Wang, Shuangshuang Qi, Xiaolong Ma, Jian Chen, Yan Zhang
Acral melanoma is associated with outcomes which are more unfavourable than those of other melanoma subtypes, and acral melanoma has higher mortality. However, histological distinction of acral melanoma from acral naevi may be difficult. Fluorescence in situ hybridisation (FISH) targeting specific genes has been used as an ancillary method for differential diagnosis of melanocytic tumours, but most previous studies have focused on non-acral lesions which may have genetic alterations different from acral lesions...
October 13, 2017: Pathology
https://www.readbyqxmd.com/read/29035277/mnk1-2-inhibition-limits-oncogenicity-and-metastasis-of-kit-mutant-melanoma
#8
Yao Zhan, Jun Guo, William Yang, Christophe Goncalves, Tomasz Rzymski, Agnieszka Dreas, Eliza Żyłkiewicz, Maciej Mikulski, Krzysztof Brzózka, Aniela Golas, Yan Kong, Meng Ma, Fan Huang, Bonnie Huor, Qianyu Guo, Sabrina Daniela da Silva, Jose Torres, Yutian Cai, Ivan Topisirovic, Jie Su, Krikor Bijian, Moulay A Alaoui-Jamali, Sidong Huang, Fabrice Journe, Ghanem E Ghanem, Wilson H Miller, Sonia V Del Rincón
Melanoma can be stratified into unique subtypes based on distinct pathologies. The acral/mucosal melanoma subtype is characterized by aberrant and constitutive activation of the proto-oncogene receptor tyrosine kinase C-KIT, which drives tumorigenesis. Treatment of these melanoma patients with C-KIT inhibitors has proven challenging, prompting us to investigate the downstream effectors of the C-KIT receptor. We determined that C-KIT stimulates MAP kinase-interacting serine/threonine kinases 1 and 2 (MNK1/2), which phosphorylate eukaryotic translation initiation factor 4E (eIF4E) and render it oncogenic...
October 16, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29020893/clinical-practice-guidelines-for-the-diagnosis-and-management-of-melanoma-melanomas-that-lack-classical-clinical-features
#9
Victoria J Mar, Alex J Chamberlain, John W Kelly, William K Murray, John F Thompson
A Cancer Council Australia multidisciplinary working group is currently revising and updating the 2008 evidence-based clinical practice guidelines for the management of cutaneous melanoma. While there have been many recent improvements in treatment options for metastatic melanoma, early diagnosis remains critical to reducing mortality from the disease. Improved awareness of the atypical presentations of this common malignancy is required to achieve this. A chapter of the new guidelines was therefore developed to aid recognition of atypical melanomas...
October 16, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28952429/erratum-to-phytochemicals-for-the-management-of-melanoma
#10
(no author information available yet)
The original version of the review article contained citations and typo errors described below. The authors regret for these errors and apologize for any inconvenience that may have caused. PUBLISHED AS "The most common sites for occurrence of acryl lentiginous melanoma are the soles of the feet, palms and beneath the nail plates [34, 35]. Acryl lentiginous melanomas appear clinically as tan to brown black, macules and patches with irregular borders and an average size of 3 centimeters [36]." CHANGED TO "The most common sites for occurrence of acral lentiginous melanoma are the soles of the feet, palms and beneath the nail plates [34, 35]...
2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28948477/plantar-melanoma-is-associated-with-certain-poor-prognostic-histopathological-factors-but-not-correlated-with-nodal-involvement-recurrence-and-worse-survival
#11
F Tas, K Erturk
BACKGROUND: Plantar surface melanoma affects the Caucasian race less likely than it does other races, e.g., the Asians and the Blacks. So far, small numbers of researches on plantar melanoma have yielded controversial results. The aim of this study was to define the histopathological and clinical characteristics pertinent to plantar melanoma and to compare them with melanomas that emerged in other sites by using a large group of patients from a single institution. PATIENTS AND METHODS: A total of 104 Turkish Caucasian plantar melanoma patients and 1065 patients with non-plantar melanomas were analyzed retrospectively...
September 25, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28940724/acral-melanoma-foot-lesions-part-1-epidemiology-aetiology-and-molecular-pathology
#12
REVIEW
A Desai, R Ugorji, A Khachemoune
Acral melanoma (AM) is a rare subtype of cutaneous malignant melanoma (MM) found on acral skin, primarily on the soles of the feet. Although rare, it is the most common subtype of MM found in patients of African or East Asian ethnicity and has a poor prognosis, often because of the more advanced stage of presentation at diagnosis. The pathogenesis of AM is unclear, but genetic alterations, including mutations in BRAF, NRAS, and KIT have been implicated. Early diagnosis of AM is important for a better prognosis, but its identification is often challenging, leading to easy misdiagnosis...
December 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28875289/-diagnostics-of-malignant-melanoma-of-the-skin-recommendations-of-the-current-s3-guidelines-on-histology-and-molecular-pathology
#13
C Rose
The updated S3 guidelines on malignant melanoma were established in August 2016. The principles of diagnostics and classification are based on the histopathological results from the primary tumor and if necessary the sentinel lymph nodes. The most important factor for prognosis is the tumor thickness according to Breslow and the detection of sentinel node micrometastases. The surgical safety margin after excision is dependent on the tumor thickness. Furthermore, ulceration of the primary tumor and presence of mitosis in melanomas less than 1 mm in thickness are also considered in the T‑classification...
September 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28870692/distinct-patterns-of-acral-melanoma-based-on-site-and-relative-sun-exposure
#14
Alexandra M Haugh, Bin Zhang, Victor L Quan, Erin M Garfield, Jeffrey A Bubley, Emily Kudalkar, Anna Elisa Verzi, Kara Walton, Timothy VandenBoom, Emily A Merkel, Christina Y Lee, Timothy Tan, Maria Cristina Isales, Betty Y Kong, Alexander T Wenzel, Christopher G Bunick, Jaehyuk Choi, Jeffrey Sosman, Pedram Gerami
Acral melanoma is distinct from melanoma of other cutaneous sites, yet there is considerable variation within this category. To better define this variation, we assessed melanomas occurring on dorsal (n=21), volar (n=9), and subungual/interdigital (n=13) acral skin as well as acral nevi (n=24) for clinical, histologic, and molecular features. Melanomas on dorsal acral surfaces demonstrated clear differences compared to volar and subungual/interdigital melanomas. The latter two groups exhibited significantly less frequent BRAF mutations (p=...
September 1, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28855355/mitf-high-and-mitf-low-cells-and-a-novel-subpopulation-expressing-genes-of-both-cell-states-contribute-to-intra-and-intertumoral-heterogeneity-of-primary-melanoma
#15
Marie Ennen, Céline Keime, Giovanni Gambi, Alice Kieny, Sebastien Coassolo, Christelle Thibault-Carpentier, Fanny Margerin-Schaller, Guillaume Davidson, Constance Vagne, Dan Lipsker, Irwin Davidson
Purpose: Understanding tumor heterogeneity is an important challenge in current cancer research. Transcription and epigenetic profiling of cultured melanoma cells have defined at least two distinct cell phenotypes characterized by distinctive gene expression signatures associated with high or low/absent expression of microphthalmia-associated transcription factor (MITF). Nevertheless, heterogeneity of cell populations and gene expression in primary human tumors is much less well characterized.Experimental Design: We performed single-cell gene expression analyses on 472 cells isolated from needle biopsies of 5 primary human melanomas, 4 superficial spreading, and one acral melanoma...
August 28, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28833024/the-role-of-access-to-care-in-acral-lentiginous-melanoma-survival
#16
COMMENT
J Berk-Krauss, J A Stein
No abstract text is available yet for this article.
August 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28830923/frequent-genetic-aberrations-in-the-cdk4-pathway-in-acral-melanoma-indicate-the-potential-for-cdk4-6-inhibitors-in-targeted-therapy
#17
Yan Kong, Xinan Sheng, Xiaowen Wu, Junya Yan, Meng Ma, Jiayi Yu, Lu Si, Zhihong Chi, Chuanliang Cui, Jie Dai, Yiqian Li, Huan Yu, Tianxiao Xu, Huan Tang, Bixia Tang, Lili Mao, Bin Lian, Xuan Wang, Xieqiao Yan, Siming Li, Jun Guo
Purpose: Effective therapies for the majority of metastatic acral melanoma patients have not been established. Thus, we investigated genetic aberrations of CDK4 pathway in acral melanoma and evaluated the efficacy of CDK4/6 inhibitors in targeted therapy of acral melanoma.Experimental Design: A total of 514 primary acral melanoma samples were examined for the copy number variations (CNV) of CDK4 pathway-related genes, including Cdk4, Ccnd1, and P16(INK4a) , by QuantiGenePlex DNA Assay. The sensitivity of established acral melanoma cell lines and patient-derived xenograft (PDX) containing typical CDK4 aberrations to CDK4/6 inhibitors was evaluated...
August 22, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28737763/melanoma-subtypes-demonstrate-distinct-pd-l1-expression-profiles
#18
Genevieve J Kaunitz, Tricia R Cottrell, Mohammed Lilo, Valliammai Muthappan, Jessica Esandrio, Sneha Berry, Haiying Xu, Aleksandra Ogurtsova, Robert A Anders, Alexander H Fischer, Stefan Kraft, Meg R Gerstenblith, Cheryl L Thompson, Kord Honda, Jonathan D Cuda, Charles G Eberhart, James T Handa, Evan J Lipson, Janis M Taube
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)...
September 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28724272/patients-characteristics-histopathological-findings-and-tumor-stage-in-different-types-of-malignant-melanoma-a-retrospective-multicenter-study
#19
Ali-Mohammad Farahmand, Amir-Hoshang Ehsani, Mojtaba Mirzaei, Maryam Mohsenian, Alireza Ghanadan
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. In this retrospective study, we obtained our data from the records of 111 patients with melanoma...
May 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28723771/malignant-melanoma-misdiagnosed-as-diabetic-foot-ulcer-a-case-report
#20
Wei Gao, Dawei Chen, Xingwu Ran
RATIONALE: Acral lentiginous melanoma (AML) does not exhibit the classic signs of malignant melanoma. ALM is frequently misdiagnosed because of its unusual sites and atypical clinical morphologies, which lead to poor prognosis. PATIENT CONCERNS: A female patient aged 78 years was presented to our center with two ulcers on her right foot. Diabetic foot ulcer was considered as the primary diagnosis. The ulcers failed to improve after 2 weeks' therapy. DIAGNOSES: An incisional biopsy of the lesion revealed malignant melanoma...
July 2017: Medicine (Baltimore)
keyword
keyword
72283
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"