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Melanoma pathology

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https://www.readbyqxmd.com/read/29166499/skin-disorders-in-renal-transplant-recipients-a-retrospective-study
#1
Pedro Miguel Clemente Garrido, João Borges-Costa
BACKGROUND: Immunosuppressive therapy, which is necessary to avoid graft rejection in renal transplant recipients, presents an increased risk of several pathologies, namely infectious and neoplastic. OBJECTIVES: To identify the most frequent skin diseases and their clinical and demographical risk factors within a population of renal transplant recipients. METHODS: A retrospective study of renal transplant recipients referred to dermatology visit and observed for the first time from January 2008 to December 2014...
September 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29156329/clinical-outcomes-of-primary-intracranial-malignant-melanoma-and-metastatic-intracranial-malignant-melanoma
#2
Joonho Byun, Eun Suk Park, Seok Ho Hong, Young Hyun Cho, Young-Hoon Kim, Chang Jin Kim, Jeong Hoon Kim, Seungjoo Lee
OBJECTIVES: Primary intracranial malignant melanoma (PIMM) is extremely rare central nervous system (CNS) tumor and known for only composed 0.07% of the CNS tumors. PIMM composed only 1% of malignant melanoma and accordingly their clinical behavior and prognosis are not well documented. So, herein, we report our experience of pathologically proven PIMM, and compared their clinical characteristics and outcome with metastatic intracranial malignant melanoma (MIMM). PATIENTS AND METHODS: Our institutional database was reviewed for patients who diagnosed as PIMM and MIMM pathologically between 1996-2016...
November 17, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29152610/mutations-in-coagulation-factor-viii-are-associated-with-more-favorable-outcome-in-patients-with-cutaneous-melanoma
#3
Zheng Ping, Abha Soni, Lance A Williams, Huy P Pham, Malay K Basu, X Long Zheng
Coagulation factor VIII (FVIII), von Willebrand factor (VWF), and ADAMTS13 play an important role in regulation of normal hemostasis. However, little is known about their roles in patients with malignancy, particularly with cutaneous melanoma. Whole genome sequencing data are available for 25,719 cases in 126 cancer genomic studies for analysis. All sequencing data and corresponding pathology findings were obtained from The Cancer Genome Atlas. The cBioportal bioinformatics tools were used for the data analysis...
July 2017: TH Open
https://www.readbyqxmd.com/read/29151970/ki67-proliferation-index-as-a-histopathological-predictive-and-prognostic-parameter-of-oral-mucosal-melanoma-in-patients-without-distant-metastases
#4
Xuhui Ma, Yunteng Wu, Tian Zhang, Hao Song, Houyu Jv, Wei Guo, Guoxin Ren
Background: To investigate the relationship between clinical and histopathological characteristics and overall survival of patients with oral mucosal melanoma (OMM) without distal metastasis in order to provide predictive prognostic information of OMM. Methods: Ki67 expression was assessed by immunohistochemistry in 123 patients with OMM without distant metastases. The associations between Ki67 expression and clinical features and overall survival (OS) of patients were statistically analyzed. The Ki67 levels of the primary and recurrent lesions from 14 OMM patients were compared...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29148538/molecular-testing-for-braf-mutations-to-inform-melanoma-treatment-decisions-a-move-toward-precision-medicine
#5
Liang Cheng, Antonio Lopez-Beltran, Francesco Massari, Gregory T MacLennan, Rodolfo Montironi
Approximately one-half of advanced (unresectable or metastatic) melanomas harbor a mutation in the BRAF gene, with V600E being the most common mutation. Targeted therapy with BRAF and MEK inhibitors is associated with significant long-term treatment benefit in patients with BRAF V600-mutated melanoma. Therefore, molecular testing for BRAF mutations is a priority in determining the course of therapy. A literature search was performed using MEDLINE/PubMed and scientific congress databases using the terms 'BRAF,' 'mutation,' and 'cancer/tumor...
November 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29142760/outcomes-of-primary-endoresection-for-choroidal-melanoma
#6
Andre A C Vidoris, Andre Maia, Marcia Lowen, Melina Morales, Jordan Isenberg, Bruno F Fernandes, Rubens N Belfort
Purpose: To review long time treatment results in patients with small or medium sized choroidal melanoma who underwent surgical tumor endoresection as a primary treatment when plaque radiotherapy was unable and patients declined enucleation. Materials and methods: Patients were evaluated for best corrected visual acuity (BCVA), and underwent biomicroscopy, indirect ophthalmoscopy, retinography and ultrasound as well as the usual systemic workup. Study inclusion required the absence of scleral invasion or metastasis and an anterior margin not exceeding the pars plana or the ciliary body...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/29141833/comparative-study-of-the-clinical-histological-and-biological-characteristics-of-squamous-cell-carcinomas-in-areas-previously-treated-with-photodynamic-therapy
#7
Tamara Gracia Cazaña, Nerea Salazar, Jesús Vera-Álvarez, Salvador González, Angeles Juarranz, Yolanda Gilaberte
Although photodynamic therapy (PDT) is an effective treatment option for non-melanoma skin cancer, the development of aggressive tumours in PDT-treated areas has been described. To evaluate the clinical, histological, and biological characteristics of squamous cell carcinomas (SCCs) in areas previously treated with PDT vs those arising in areas never treated with this therapeutic modality. A retrospective observational study was designed. We collected all cases of invasive SCCs in areas previously treated with PDT...
November 15, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/29138707/jejunojejunal-intussusception-due-to-metastatic-melanoma-seven-years-after-the-primer
#8
Alexander Giakoustidis, Thomas Goulopoulos, Anastasios Boutis, George Kavvadias, Aristidis Kainantidis, Thomas Zaraboukas, Dimitrios Giakoustidis
Intestinal intussusception in adults is a rare medical condition accounting for less than 5% of all intussusceptions. Herein we present a 45-year-old patient with a history of abdominal pain and loss of weight. CT scan revealed jejunojejunal intussusceptions. The patient was subjected to exploratory operation and small intestine resection due to a mass causing intestinal intussusception. Pathology confirmed suspected diagnosis of metastatic melanoma to small intestine secondary to melanoma, 7 years after the initial manifestation...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/29137292/the-clinical-significance-of-c-kit-mutations-in-metastatic-oral-mucosal-melanoma-in-china
#9
Xuhui Ma, Yunteng Wu, Tian Zhang, Hao Song, Houyu Jv, Wei Guo, Guoxin Ren
c-Kit mutations are frequently detected in mucosal melanomas, but their clinical significance in metastatic oral mucosal melanomas (OMM) remains unclear. The main purpose of this study was to investigate the clinical and pathological features of metastatic OMMs with c-Kit mutations and the efficiency of the tyrosine kinase inhibitor imatinib in treating metastatic OMMs. We found thatresidual primary lesion and neck lymph nodes could act as independent prognostic factors in metastatic OMM patients. c-Kit mutations were detected in 22 out of 139 (15...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136692/-expression-and-prognostic-values-of-pd-1-pd-l1-and-ido-1-in-sinonasal-malignant-mucosal-melanoma
#10
H Q Liu, B Q Zou, S Y Wang
Objective: To investigate the correlation between the expression of programmed death-1(PD-1), PD ligand-1(PD-L1), indoleamine 2, 3-dioxygenase 1(IDO-1) and clinical parameters in sinonasal malignant mucosal melanoma (SNM). Methods: Samples from 86 SNM patients who did not receive immune-targeted therapy and radio-chemotherapy were analyzed for PD-1, PD-L1, and IDO-1 expression by immunohistochemistry. Results: High clinical/pathologic staging, brain metastases and advanced age were independent risk factors of poor prognosis...
November 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29136453/randomized-phase-iii-trial-of-adjuvant-therapy-with-locoregional-interferon-beta-versus-surgery-alone-in-stage-ii-iii-cutaneous-melanoma-japan-clinical-oncology-group-study-jcog1309-j-feron
#11
Kenjiro Namikawa, Arata Tsutsumida, Tomonori Mizutani, Taro Shibata, Tatsuya Takenouchi, Shusuke Yoshikawa, Yoshio Kiyohara, Hiroshi Uchi, Masutaka Furue, Dai Ogata, Tetsuya Tsuchida, Naoya Yamazaki
The Dermatologic Oncology Group of Japan Clinical Oncology Group has started a randomized phase III trial to confirm the superiority of adjuvant therapy with locoregional interferon beta in overall survival over surgery alone for patients with pathological stage II/III cutaneous melanoma (JCOG1309). Patients in the interferon beta arm receive intra- or subcutaneous injections of interferon beta directly into the surgical site at a flat dose of 3 million units once per day. Treatment is repeated for 10 consecutive days every 8 weeks for a total of 3 courses during the induction phase, then 1-day injection every 4 weeks for 2...
July 1, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29134183/pigmented-spindle-cell-nevus-of-reed-of-the-eyelid
#12
Melina I Morkin, Mitesh K Kapadia, Nora V Laver
Purpose: To report the clinical, pathological, and immunohistochemical features of the first pigmented spindle cell nevus (PSCN) of Reed documented to have appeared in the eyelid. Methods: The findings of clinical and histopathological examination are presented, along with differential diagnoses and a review of the pertinent literature. Case: A 3-year-old boy presented with a rapidly growing, heavily pigmented left lower lid papule raising the concern of malignancy, warranting excisional biopsy...
September 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29133617/response-and-resistance-to-paradox-breaking-braf-inhibitor-in-melanomas-in-vivo-and-ex-vivo
#13
Edward J Hartsough, Curtis H Kugel, Michael J Vido, Adam C Berger, Timothy J Purwin, Allison Goldberg, Michael A Davies, Matthew J Schiewer, Karen E Knudsen, Gideon Bollag, Andrew E Aplin
FDA-approved BRAF inhibitors produce high response rates and improve overall survival in patients with BRAF V600E/K mutant melanoma, but are linked to pathologies associated with paradoxical ERK1/2 activation in wild-type BRAF cells. To overcome this limitation, a next-generation paradox breaking RAF inhibitor (PLX8394) has been designed. Here we show that by using a quantitative reporter assay, PLX8394 rapidly suppressed ERK1/2 reporter activity and growth of mutant BRAF melanoma xenografts. Ex vivo treatment of xenografts and use of a patient-derived explant system (PDeX) revealed that PLX8394 suppressed ERK1/2 signaling and elicited apoptosis more effectively than the FDA-approved BRAF inhibitor, vemurafenib...
November 13, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29132118/primary-malignant-melanoma-of-the-female-urethra-report-of-a-rare-neoplasm-of-the-urinary-tract
#14
Namita Bhutani, Pradeep Kajal, Devendra Pawar
INTRODUCTION: Melanoma is a malignant tumor that can affect any area of the anatomical economy. Its occurance in the female urethra is extremely rare. We report a case of primary malignant urethral melanoma developed in an elderly female patient. PRESENTATION OF CASE: A 70 years old female presented with dysuria, poor stream, gross haematuria, intermittent blood spots, and a painful mass. On physical examination, there were no suspicious lesions on the skin. On external genital examination, a lesion at the level of the urethral meatus was observed...
November 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29124765/lipocalin-type-prostaglandin-d-synthase-derived-pgd2-attenuates-malignant-properties-of-endothelial-cells-in-tumor
#15
Keisuke Omori, Teppei Morikawa, Akiko Kunita, Tatsuro Nakamura, Kosuke Aritake, Yoshihiro Urade, Masashi Fukayama, Takahisa Murata
Endothelial cells (ECs) are a key component of the tumor microenvironment. They have abnormal characteristics compared to the ECs in normal tissues. Here, we found a marked increase in lipocalin-type prostaglandin D synthase (L-PGDS) mRNA (Ptgds) expression in ECs isolated from mouse melanoma. Immunostaining of mouse melanoma revealed expression of L-PGDS protein in the ECs. In situ hybridization also showed L-PGDS (PTGDS) mRNA expression in the ECs of human melanoma and oral squamous cell carcinoma. In vitro experiments showed that stimulation with tumor cell-derived IL-1 and TNF-α increased L-PGDS mRNA expression and its product prostaglandin D2 (PGD2 ) in human normal ECs...
November 10, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29115977/clinicopathological-predictors-of-recurrence-in-nodular-and-superficial-spreading-cutaneous-melanoma-a-multivariate-analysis-of-214-cases
#16
Maria A Pizzichetta, Daniela Massi, Mario Mandalà, Paola Queirolo, Ignazio Stanganelli, Vincenzo De Giorgi, Giovanni Ghigliotti, Stefano Cavicchini, Pietro Quaglino, Maria T Corradin, Pietro Rubegni, Mauro Alaibac, Stefano Astorino, Fabrizio Ayala, Serena Magi, Laura Mazzoni, Maria Ausilia Manganoni, Renato Talamini, Diego Serraino, Giuseppe Palmieri
BACKGROUND: Nodular melanoma (NM) accounts for most thick melanomas and because of their frequent association with ulceration, fast growth rate and high mitotic rate, contribute substantially to melanoma-related mortality. In a multicentric series of 214 primary melanomas including 96 NM and 118 superficial spreading melanoma (SSM), histopathological features were examined with the aim to identify clinicopathological predictors of recurrence. METHODS: All consecutive cases of histopathologically diagnosed primary invasive SSM and NM during the period 2005-2010, were retrieved from the 12 participating Italian Melanoma Intergroup (IMI) centers...
November 7, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29112483/clinicopathologic-factors-predictive-of-occult-lymph-node-involvement-in-cutaneous-head-and-neck-melanoma
#17
Pratyusha Yalamanchi, Jason A Brant, Jinbo Chen, Jason G Newman
Objectives Evaluate clinicopathologic factors contributing to regional lymph node (LN) metastases in cutaneous head and neck melanoma (HNM). Study Design Retrospective review of a national cancer database. Setting National Cancer Database (2004-2012). Methods National Cancer Database (NCDB) cases diagnosed between 2004 and 2012 were reviewed. Inclusion criteria were head and neck cutaneous site codes, melanoma histology codes, and clinically node-negative status. Independent, clinicopathologic factors associated with pathologic positive LN status were identified by multivariable logistic regression...
November 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29110565/impact-of-biopsy-modality-on-the-management-of-cutaneous-melanoma-of-the-head-and-neck
#18
Arya W Namin, Robert P Zitsch
Objective The purpose of this study was to examine how biopsy modality affects the treatment course and outcomes of patients with cutaneous melanoma of the head and neck. Specifically, we investigated if partial biopsy techniques are associated with positive margins on definitive wide local excision (DWLE), the need for early reoperation to obtain adequate margins or sentinel lymph node biopsy, and survival. Study Design Retrospective case series. Setting Tertiary care academic center. Subjects and Methods Subjects (N = 170) included all patients who were surgically treated for primary cutaneous melanoma of the head and neck at the University of Missouri-Columbia between January 1, 2000, and December 31, 2015...
November 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29102967/missed-opportunity-to-diagnose-subungual-melanoma-potential-pitfalls
#19
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/29101736/clinical-implications-of-nras-overexpression-in-resectable-pancreatic-adenocarcinoma-patients
#20
Javier Martinez-Useros, Weiyao Li, Tihomir Georgiev-Hristov, Maria J Fernandez-Aceñero, Aurea Borrero-Palacios, Nuria Perez, Angel Celdran, Jesus Garcia-Foncillas
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal forms of cancer, and its incidence is rising worldwide. Although survival can be improved by surgical resection, when detected at an early stage, this type of cancer is usually asymptomatic, and disease becomes only apparent after metastasis. Adjuvant treatment does not improve survival, thus after surgery there is a lack of predictive and prognosis biomarkers to predict treatment response and survival. The mitogen-activated protein-kinase and phosphoinositide 3-kinase signalling pathways play a crucial role in cancer development and progression...
November 3, 2017: Pathology Oncology Research: POR
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