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mitosis in melanoma

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https://www.readbyqxmd.com/read/28750139/is-mitotic-rate-still-useful-in-the-management-of-patients-with-thin-melanoma
#1
Antonio Tejera-Vaquerizo, Gladys Pérez-Cabello, Lorena Marínez-Leborans, Elena Gallego, Vicente Oliver-Martínez, Paula Martín-Cuevas, Salvador Arias-Santiago, José Aneiros-González, Enrique Herrera-Acosta, Victor Traves, Enrique Herrera-Ceballos, Eduardo Nagore
BACKGROUND: T1 melanoma substaging was recently modified by the American Joint Committee on Cancer (AJCC). Although sentinel lymph node (SLN) positivity is the most important prognostic factor in melanoma, there is a lack of consensus on whether SLN biopsy should be performed in patients with thin melanoma (≤1 mm). OBJECTIVE: The main aim of this study was to investigate predictors of SLN positivity in patients with thin melanoma, with a special emphasis on mitotic rate...
July 27, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28717212/a-clinicopathological-analysis-of-153-acral-melanomas-and-the-relevance-of-mechanical-stress
#2
Yi-Shuan Sheen, Yi-Hua Liao, Ming-Hsien Lin, Jau-Shiuh Chen, Jau-Yu Liau, Yu-Ju Tseng, Chih-Hung Lee, Yih-Leong Chang, Chia-Yu Chu
The pathogenesis of melanomas emerging in plantar surfaces remains unclear; however, mechanical stress has been reported to increase the formation of melanomas. In this study, we conducted a multicenter retrospective analysis of 153 acral melanomas diagnosed between 2000 and 2015 in Taiwan. The male-to-female ratio of the patients in question was 1:1.28, and the mean age at diagnosis was 68 years. We examined whether melanomas which developed in different areas of the patients' soles differed in their associations with various clinicopathological characteristics and survival...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28688635/melphalan-hypoxic-perfusion-with-hemofiltration-for-melanoma-locoregional-metastases-in-the-pelvis
#3
Stefano Guadagni, Giammaria Fiorentini, Marco Clementi, Giancarlo Palumbo, Alessandro Chiominto, Sonia Cappelli, Francesco Masedu, Marco Valenti
BACKGROUND: For patients with melanoma metastases in the pelvic and groin regions, the median survival time (MST) was 8 mo with old treatments, whereas today is approximately 20 mo with new target therapy and novel immunotherapy. Unfortunately, approximately 30% of patients are nonresponsive to these new drugs. MATERIALS AND METHODS: Thirty-six patients, previously progressing after standard treatments, collectively received 146 melphalan (30 mg/m(2)) hypoxic pelvic perfusions with hemofiltration, in association with palliative excision in most cases...
July 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28684059/melanoma-patients-disease-specific-knowledge-information-preference-and-appreciation-of-educational-youtube-videos-for-self-inspection
#4
S Damude, J E H M Hoekstra-Weebers, B L van Leeuwen, H J Hoekstra
BACKGROUND: Informing and educating melanoma patients is important for early detection of a recurrence or second primary. This study aimed to investigate Dutch melanoma patients' disease-specific knowledge, and their opinions on information provision and the value of e-Health videos. METHODS: All AJCC stage I-II melanoma patients in follow-up between March 2015 and March 2016 at a single melanoma center were invited to complete 19 online questions, addressing respondents' characteristics, knowledge on melanoma, and opinions on melanoma-specific information received and the educational YouTube videos...
June 24, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28657121/differential-ube2c-and-hoxa1-expression-in-spitz-nevus-and-melanoma
#5
Stefan Kraft, Johanna B Moore, Alona Muzikansky, Kenneth L Scott, Lyn M Duncan
BACKGROUND: Recent molecular advances suggest that Spitz nevi and other spitzoid neoplasms are biologically distinct from melanoma and conventional nevi. The ubiquitin ligase UBE2C and the homeobox transcription factor HOXA1 are candidate oncogenes in melanoma. METHODS: Using RNA expression analysis and immunohistochemistry, we evaluated these biomarkers in Spitz nevi (n = 20) melanoma (n = 20), and by immunohistochemistry in conventional nevi (n = 20)...
June 28, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28607807/immunohistochemical-evaluation-of-vitamin-d-receptor-vdr-expression-in-cutaneous-melanoma-tissues-and-four-vdr-gene-polymorphisms
#6
Francesco La Marra, Giuseppe Stinco, Cinzia Buligan, Giovanni Chiriacò, Diego Serraino, Carla Di Loreto, Sabina Cauci
OBJECTIVE: : Vitamin D receptor (VDR) mediates vitamin D activity. We examined whether VDR expression in excised melanoma tissues is associated with VDR gene (VDR) polymorphisms. METHODS: : We evaluated VDR protein expression (by monoclonal antibody immunostaining), melanoma characteristics, and carriage of VDR-FokI-rs2228570 (C>T),VDR-BsmI-rs1544410 (G>A),VDR-ApaI-rs7975232 (T>G), andVDR-TaqI-rs731236 (T>C) polymorphisms (by restriction fragment length polymorphism)...
May 2017: Cancer Biology & Medicine
https://www.readbyqxmd.com/read/28604419/prognostic-significance-of-cyclooxygenase-2-and-phosphorylated-akt1-overexpression-in-primary-nonmetastatic-and-metastatic-cutaneous-melanomas
#7
Ciro D Soares, Camilla F Borges, Marcondes Sena-Filho, Oslei P de Almeida, Rafael F Stelini, Maria L Cintra, Edgard Graner, Karina G Zecchin, Jacks Jorge
Cyclooxygenase 2 (COX-2) and phosphorylated Akt1 (p-Akt1) are associated with tumor spreading, cell proliferation, high metabolism, and angiogenesis in solid tumors. This study aimed to investigate COX-2 and p-Akt1 expression in primary and metastatic melanomas by correlating with the cellular proliferation index (as revealed by minichromosome maintenance 2 expression) and the outcome of patients with malignant melanomas. Seventy-seven biopsies of malignant melanomas, including 42 primary nonmetastatic melanomas (PNMMs), 12 primary metastatic melanomas (PMMs), and 23 metastatic melanomas (MMs), were retrospectively selected...
June 9, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28549035/expression-of-ki-67-and-estrogen-receptor-beta-in-primary-cutaneous-melanoma-as-a-potential-indicator-of-regional-lymph-node-positivity
#8
Dalma Udovicic-Gagula, Amina Ahmovic, Nurija Bilalovic, Mirsad Doric
In the early stages of cutaneous malignant melanoma (MM), it is extremely difficult to predict adequately the risk from hematogenic and lymphatic metastasis. We investigate whether the immunohistochemical expression of Ki-67 and estrogen receptor beta (ERβ) in cells of MM could predict the status of regional lymph nodes. A total of 55 tissue samples of primary cutaneous melanomas with known status of regional lymph nodes were retrospectively evaluated for Ki-67 and ERβ expression by quantitative immunohistochemistry and then correlated with the status of regional lymph nodes and relevant clinicopathologic parameters...
May 25, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28512420/a-case-of-iris-melanocytoma-demonstrating-diffuse-melanocytic-proliferation-with-uncontrolled-intraocular-pressure
#9
Mami Kusunose, Yuji Sakino, Yoshihiro Noda, Tsutomu Daa, Toshiaki Kubota
We report a rare case with histologically proven melanocytoma of the iris that demonstrated diffuse melanocytic proliferation with uncontrolled secondary glaucoma and investigate the etiology of the intraocular pressure elevation. The patient was a 78-year-old man with a history of darkened iris of his left eye. The intraocular pressure was 39 mm Hg. A slit-lamp examination showed a diffuse darkened iris, and a gonioscopic examination revealed open angle with circumferential heavy pigmentation. There was no pigment dispersion of the anterior chamber and no pigment deposition of the cornea...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28487750/penile-melanoma-a-20-year-analysis-of-six-patients-at-the-national-cancer-institute-of-peru-lima
#10
Andres Guevara Jabiles, Edilberto Yabar Del Mar, Gilmer Arcenio Diaz Perez, Fernando Quiroa Vera, Luis Meza Montoya, Carlos Manuel Morante Deza
Melanoma of the urogenital tract is extremely rare, accounting for less than 0.1% of melanoma cases. The global literature currently describes only 220 cases of penile melanoma, most commonly located on the glans penis. RESULTS: Penile melanoma accounts for 0.7% of penile cancers and 0.18% of melanoma cases. The average patient age for the six cases we reviewed was 44.5 years. Three of these cases (50%) involved ulceration, one case (16.7%) involved lymphovascular invasion, and three cases (50%) involved mitosis ≥ 1 mm(2) (0...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28332194/high-serum-vitamin-d-level-correlates-with-better-prognostic-indicators-in-primary-melanoma-a-pilot-study
#11
Alvin Lim, Ramin Shayan, George Varigos
BACKGROUND/OBJECTIVES: Sunlight is a major risk factor for cutaneous melanoma. However, its interaction with melanoma is complex. In particular, vitamin D is a UVB-derived hormone that has been shown to have anti-cancer effects. In this retrospective pilot study we sought to determine an association between the clinicopathological features of melanoma and the patients' corresponding serum vitamin D level. METHODS: In total, 109 primary melanomas diagnosed between 2001 and 2013 were retrospectively identified from our institutional database with a corresponding 25-hydroxyvitamin D3 level estimated within 6 months of diagnosis...
March 23, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28323902/no-prognostic-value-added-by-vitamin-d-pathway-snps-to-current-prognostic-system-for-melanoma-survival
#12
Li Luo, Irene Orlow, Peter A Kanetsky, Nancy E Thomas, Shenying Fang, Jeffrey E Lee, Marianne Berwick, Ji-Hyun Lee
The prognostic improvement attributed to genetic markers over current prognostic system has not been well studied for melanoma. The goal of this study is to evaluate the added prognostic value of Vitamin D Pathway (VitD) SNPs to currently known clinical and demographic factors such as age, sex, Breslow thickness, mitosis and ulceration (CDF). We utilized two large independent well-characterized melanoma studies: the Genes, Environment, and Melanoma (GEM) and MD Anderson studies, and performed variable selection of VitD pathway SNPs and CDF using Random Survival Forest (RSF) method in addition to Cox proportional hazards models...
2017: PloS One
https://www.readbyqxmd.com/read/28246385/zeb1-regulates-multiple-oncogenic-components-involved-in-uveal-melanoma-progression
#13
Yao Chen, Xiaoqin Lu, Diego E Montoya-Durango, Yu-Hua Liu, Kevin C Dean, Douglas S Darling, Henry J Kaplan, Douglas C Dean, Ling Gao, Yongqing Liu
Human uveal melanoma (UM) is a major ocular malignant tumor with high risk of metastasis and requires multiple oncogenic factors for progression. ZEB1 is a zinc finger E-box binding transcription factor known for participating epithelial-mesenchymal transition (EMT), a critical cellular event for metastasis of malignant tumors of epithelium origin. ZEB1 is also expressed in UM and high expression of ZEB1 correlates with UM advancement, but has little effect on cell morphology. We show that spindle UM cells can become epithelioid but not vice versa; and ZEB1 exerts its tumorigenic effects by promoting cell dedifferentiation, proliferation, invasiveness, and dissemination...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28209051/melanoma-in-the-elderly
#14
Ausilia M Manganoni, Laura Pizzatti, Laura Pavoni, Francesca Consoli, Enrico Damiani, Giorgio Manca, Giulio Gualdi, Piergiacomo Calzavara-Pinton
BACKGROUND: Among older patients, melanoma in general presents biological features related to a more aggressive biology, such as more locally advanced tumor. Management of melanoma in elderly may be difficult, mainly due to comorbidities. We report the experience of the Melanoma Unit of University Hospital ASST Spedali Civili di Brescia, Italy. METHODS: Study subjects were drawn from 3444 patients with histological confirmed melanoma. Data were extracted from electronic database of the Melanoma Unit of University Hospital ASST Spedali Civili of Brescia, Italy...
February 16, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28196618/dermoscopic-features-predicting-the-presence-of-mitoses-in-thin-melanoma
#15
S Ribero, G Argenziano, A Lallas, E Moscarella, E Benati, M Raucci, S Piana, C Longo
BACKGROUND: The latest AJCC classification has included the number of mitoses as a factor for upstaging thin melanomas. Meanwhile, while dermoscopy has often been used to predict melanoma thickness, its value in predicting number of mitoses remains unknown. OBJECTIVE: Our aim is to evaluate the correlation between dermoscopic features and the presence of mitoses in a consecutive cohort of thin melanomas. METHODS: A case control study has been performed to identify specific dermoscopic parameters that could differentiate thin melanomas with 1 or more mitoses per mm2 from those without mitoses...
February 3, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28154916/-diagnostics-of-malignant-melanoma-of-the-skin-recommendations-of-the-current-s3-guidelines-on-histology-and-molecular-pathology
#16
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...
February 2, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28126183/-melanocytoma-and-meningeal-melanocytosis-similar-but-different-lesions
#17
Felipe Padilla-Vázquez, Víctor Hugo Escobar-de la Garma, Arturo Ayala-Arcipreste, Rafael Mendizábal-Guerra, Teresa Cuesta-Mejía
BACKGROUND: Meningeal melanomatosis is an extra-axial well-encapsulated malignant tumour with diffuse meningeal growth and dark coloration (due to high melanin contents), while meningeal melanocytoma is the focalized benign variant. Melanocytic lesions may be secondary to melanoma or be histologically benign, however, their diffuse nature makes them impossible to cure. Melanocytosis is a diffuse tumour that can form solitary extra-axial tumours, which invades the parenchyma and presents signs of malignancy with increased mitosis and Ki67, observed in 1 to 6% of immunopathological exams...
January 23, 2017: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/28116802/mitotic-figures-and-the-evolving-staging-of-melanoma
#18
EDITORIAL
Thomas N Helm
No abstract text is available yet for this article.
April 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28107565/idermatopath-a-novel-software-tool-for-mitosis-detection-in-h-e-stained-tissue-sections-of-malignant-melanoma
#19
C Andres, B Andres-Belloni, R Hein, T Biedermann, A Schäpe, N Brieu, R Schönmeyer, M Yigitsoy, J Ring, G Schmidt, N Harder
BACKGROUND: Malignant Melanoma (MM) is characterized by a growing incidence and a high malignant potential. Besides well-defined prognostic factors such as tumour thickness and ulceration, the Mitotic Rate (MR) was included in the AJCC recommendations for diagnosis and treatment of MM. In daily routine, the identification of a single mitosis can be difficult on haematoxylin and eosin slides alone. Several studies showed a big inter- and intra-individual variability in detecting the MR in MM even by very experienced investigators, thus raising the question for a computer-assisted method...
January 20, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28079338/a-single-institute-experience-on-melanoma-prognosis-a-long-term-follow-up
#20
Emi Dika, Marco A Chessa, Giulia Veronesi, Giulia M Ravaioli, Pier A Fanti, Simone Ribero, Giovanni Tripepi, Carlotta Gurioli, Alessandro Traniello Gradassi, Martina Lambertini, Annalisa Patrizi
BACKGROUND: The prognosis of cutaneous melanoma is correlated to histopathologic parameters such as Breslow thickness, the presence of mitosis, ulceration and lymphatic involvement at the moment of the diagnosis. On the other hand, the prognostic value of parameters such as age, sex, and tumor localization are still a matter of debate. We evaluated herein the prognostic factors in melanoma patients during a long term follow- up (60 months). METHODS: Melanoma patients presenting stage IB-III at diagnosis were included...
January 12, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
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