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Merkel carcinoma

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https://www.readbyqxmd.com/read/28821198/cd200-expression-in-neuroendocrine-neoplasms
#1
Jason E Love, Kimberly Thompson, Mark R Kilgore, Maria Westerhoff, Claire E Murphy, Antonios Papanicolau-Sengos, Kinsey A McCormick, Veena Shankaran, Natalie Vandeven, Faith Miller, Astrid Blom, Paul T Nghiem, Steven J Kussick
Objectives: CD200 expression has been well studied in hematopoietic malignancies; however, CD200 expression has not been well-characterized in neuroendocrine neoplasms. We examined CD200 expression in 391 neuroendocrine neoplasms from various anatomic sites. Methods: Tissue blocks containing pulmonary small cell carcinoma, pulmonary carcinoid, large cell neuroendocrine carcinoma, pancreatic neuroendocrine tumor, gastrointestinal carcinoid, and Merkel cell carcinoma were evaluated for CD200 expression by immunohistochemistry...
September 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28815668/primary-low-grade-neuroendocrine-carcinoma-of-the-skin-an-exceedingly-rare-entity
#2
Tiffany Y Chen, Annie O Morrison, Joe Susa, Clay J Cockerell
Low-grade neuroendocrine tumors (NET), also known as carcinoid tumor, commonly arise from the gastrointestinal and pulmonary tracts, but rarely occur in the skin. Cutaneous NET typically occurs as metastases or high grade primary lesions, called Merkel cell carcinoma. In the few cases described in literature, primary low-grade neuroendocrine carcinomas of the skin (LGNECS) are usually indolent cutaneous nodules, presenting on the head and trunk of elderly patients. LGNECS tumors are histologically similar to its counterparts arising in other anatomic locations...
August 16, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28802661/efficacy-of-isolated-limb-perfusion-ilp-in-patients-with-merkel-cell-carcinoma-mcc-a-multicenter-experience
#3
L M van Veenendaal, M F Madu, M E T Tesselaar, C Verhoef, D J Grünhagen, A C J van Akkooi
BACKGROUND: Merkel cell carcinoma (MCC) is a rare and potentially aggressive neuroendocrine tumor of the skin, with a propensity for locoregional metastases. In two expert referral centers, isolated limb perfusion (ILP) is used to obtain locoregional control in selected locoregionally advanced MCC patients. This study describes our experience. METHOD: Patients who underwent ILP for MCC were analyzed. ILP was performed with melphalan and tumor necrosis factor (TNF) combination therapy...
August 3, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28802497/update-on-merkel-cell-carcinoma
#4
REVIEW
Paul W Harms
Merkel cell carcinoma (MCC) is a rare, aggressive cutaneous neuroendocrine malignancy. Merkel cell polyomavirus, a tumorigenic DNA virus, is present in most MCC tumors, with implications for tumor biology, diagnosis, and management. Merkel cell polyomavirus-positive tumors have a high burden of UV-signature mutations, similar to melanoma. The histopathologic diagnosis of MCC requires immunohistochemistry to exclude morphologically similar entities. Therapies for advanced disease are currently lacking. Here, the features of MCC are reviewed, including recent molecular discoveries with implications for improved therapy for advanced disease...
September 2017: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/28802095/the-diagnostic-utility-of-merkel-cell-polyomavirus-immunohistochemistry-in-a-fine-needle-aspirate-of-metastatic-merkel-cell-carcinoma-of-unknown-primary-to-the-pancreas
#5
Long Li, Kyle Molberg, Naga Cheedella, Joel Thibodeaux, Stacy Hinson, Elena Lucas
Merkel cell carcinoma (MCC) is an aggressive skin tumor with a high tendency for metastases. We report a case of MCC initially presenting as axillary and pancreatic metastases. A 33-year-old HIV-positive Hispanic male presented with a history of a rapidly growing axillary mass. A needle core biopsy demonstrated an epithelioid neoplasm composed of small to medium-sized cells with high nuclear-cytoplasmic ratio, nuclear molding, and frequent mitotic figures. A subsequent PET scan revealed a 1.5 cm FDG avid mass in the pancreas...
August 12, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28793172/tropomyosin-receptor-kinase-a-expression-on-merkel-cell-carcinoma-cells
#6
Ulrike Wehkamp, Sophie Stern, Sandra Krüger, Axel Hauschild, Christoph Röcken, Friederike Egberts
Importance: Merkel cell carcinoma (MCC) is a malignant neuroendocrine skin tumor frequently associated with the Merkel cell polyomavirus. Immune checkpoint therapy showed remarkable results, although not all patients are responsive to this therapy. Anti-tropomyosin receptor kinase A (TrkA)-targeted treatment has shown promising results in several tumor entities. Objective: To determine TrkA expression in MCC as a rationale for potential targeted therapy. Design, Setting, and Participants: This case series study investigated the MCC specimens of 55 patients treated at the Department of Dermatology, University Hospital of Schleswig-Holstein, Kiel, Germany, from January 1, 2005, through December 31, 2015...
August 9, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28763797/evaluation-of-real-world-treatment-outcomes-in-patients-with-distant-metastatic-merkel-cell-carcinoma-following-second-line-chemotherapy-in-europe
#7
Jürgen C Becker, Eva Lorenz, Selma Ugurel, Thomas K Eigentler, Felix Kiecker, Claudia Pföhler, Ivonne Kellner, Friedegund Meier, Katharina Kähler, Peter Mohr, Carola Berking, Gabriele Haas, Christoph Helwig, Dina Oksen, Dirk Schadendorf, Lisa Mahnke, Murtuza Bharmal
BACKGROUND AND AIMS: Merkel cell carcinoma (MCC) is a rare, aggressive skin cancer; few treatments exist for patients with advanced disease. Once tumors metastasize to distant sites, patients generally receive chemotherapy, but response duration and progression-free survival (PFS) are typically short. Few studies have assessed the efficacy of second-line chemotherapy for metastatic MCC. Here, we studied outcomes in patients who received ≥ 2 lines of chemotherapy for metastatic MCC. MATERIALS AND METHODS: Patients in an MCC-specific registry diagnosed with stage IV MCC between November 1, 2004, and September 15, 2015, and treated with second-line or later chemotherapy were analyzed retrospectively...
July 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28763479/expression-of-merkelcell-polyomavirus-mcpyv-large-t-antigen-in-merkel-cell-carcinoma-lymph-node-metastases-predicts-poor-outcome
#8
Georg Haymerle, Stefan Janik, Alexandra Fochtmann, Johannes Pammer, Helga Schachner, Lucas Nemec, Michael Mildner, Roland Houben, Matthaeus Ch Grasl, Boban M Erovic
BACKGROUND: The aim of this study was to determine the prevalence of MCPyV in Merkel cell carcinoma (MCC) primaries versus lymph node metastasis and to evaluate possible prognostic factors. METHODS: Samples of MCC primaries and lymph node metastases were stained immunohistochemically for the MCPyV large T-antigen and expression was compared to patients´ clinical outcome. RESULTS: 41 MCC patients were included. 33 (61%) out of 54 specimens were MCPyV-positive in the immunohistochemistry...
2017: PloS One
https://www.readbyqxmd.com/read/28762116/merkel-cell-carcinoma-of-the-head-and-neck-recommendations-for-diagnostics-and-treatment
#9
REVIEW
Urs Dietmar Achim Müller-Richter, Anja Gesierich, Alexander Christian Kübler, Stefan Hartmann, Roman Camillus Brands
BACKGROUND: Merkel cell carcinoma (MCC) is a rare, aggressive tumor that often occurs in the head and neck region. Because of these features, the classifications and diagnostic and treatment regimens are frequently modified. Especially in the anatomically complex head and neck region, it is crucial to be aware of the current recommendations for diagnostics and treatment of MCC to ensure appropriate treatment. This overview aims to summarize the currently available literature. METHODS: The authors reviewed the relevant literature and international guidelines for MCC from 2012 to 2017 with respect to epidemiology and prognosis, diagnostic procedures and imaging, surgery, radiation, systemic treatment, and aftercare...
July 31, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28761962/coincident-metastatic-melanoma-and-merkel-cell-carcinoma-with-complete-remission-on-treatment-with-pembrolizumab
#10
Alexander Thiem, Hermann Kneitz, Patrick Schummer, Stefan Herz, David Schrama, Roland Houben, Matthias Goebeler, Bastian Schilling, Anja Gesierich
No abstract text is available yet for this article.
August 1, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28746702/identifying-an-optimal-adjuvant-radiotherapy-dose-for-extremity-and-trunk-merkel-cell-carcinoma-following-resection-an-analysis-of-the-national-cancer-database
#11
Sagar A Patel, Muhammad M Qureshi, Debjani Sahni, Minh Tam Truong
Importance: Merkel cell carcinoma (MCC) is a rare and aggressive cutaneous neuroendocrine neoplasm with a high risk of recurrence following resection. Despite a rising incidence over the past 3 decades, there is a paucity of prospective data owing to the rarity of this disease. Objective: To determine the optimal adjuvant radiation therapy (RT) dose following resection of localized MCC of the extremities or trunk. Design, Setting, and Participants: Using the National Cancer Database, a large national database consisting of a heterogeneous population and treatment settings, we retrospectively analyzed a cohort of 2093 patients 18 years or older with stage I to III MCC of the extremities and/or trunk treated with definitive surgery and adjuvant RT between 1998 and 2011...
July 26, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28740894/postoperative-radiation-therapy-is-associated-with-a-reduced-risk-of-local-recurrence-among-low-risk-merkel-cell-carcinomas-of-the-head-and-neck
#12
Seesha R Takagishi, Tessa E Marx, Christopher Lewis, Erica S Tarabadkar, Ilsa D Juhlin, Astrid Blom, Jayasri G Iyer, Jay J Liao, Yolanda D Tseng, Teresa Fu, Paul Nghiem, Upendra Parvathaneni
PURPOSE: Merkel cell carcinoma (MCC) is a rare and often aggressive skin cancer. Typically, surgery is the primary treatment. Postoperative radiation therapy (PORT) is often recommended to improve local control. It is unclear whether PORT is indicated in patients with favorable Stage IA head and neck (HN) MCC. METHODS AND MATERIALS: We conducted a retrospective analysis of 46 low-risk HN MCC cases treated between 2006 and 2015. Inclusion criteria were defined as a primary tumor size of ≤ 2 cm, negative pathological margins, negative sentinel lymph node biopsy, and no immunosuppression...
October 2016: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28739498/increased-expression-of-ezh2-in-merkel-cell-carcinoma-is-associated-with-disease-progression-and-poorer-prognosis
#13
Kelly L Harms, Heather Chubb, Lili Zhao, Douglas R Fullen, Christopher K Bichakjian, Timothy M Johnson, Shannon Carskadon, Nallasivam Palanisamy, Paul W Harms
Enhancer of zeste homolog 2 (EZH2) is a histone methyltransferase that affects tumorigenesis by epigenetic gene silencing. Merkel cell carcinoma (MCC) is a rare cutaneous neuroendocrine carcinoma that has a high risk of disease progression with nodal and distant metastases. Here, we evaluated EZH2 expression by immunohistochemistry in a cohort of 85 MCC tumors (29 primary tumors, 41 lymph node metastases, 13 in-transit metastases, and 2 distant metastases) with clinical follow-up. We show strong/moderate EZH2 expression in 54% of tumors...
July 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28735439/surgical-management-of-periocular-cancers-high-and-low-risk-features-drive-treatment
#14
REVIEW
Richard C Allen
PURPOSE OF REVIEW: Recent advances in the treatment of eyelid tumors have centered on the excision, evaluation of margins, role of sentinel lymph node biopsy, and adjunctive/adjuvant systemic and radiation therapy. The purpose of this review is to elaborate on these advances. RECENT FINDINGS: Mohs excision of basal cell carcinoma and squamous cell carcinoma continues to provide the greatest success in complete excision of the cancer, especially in those cases of high-risk disease including medial canthal location and recurrent disease...
September 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28732551/novel-additions-to-the-ajcc-s-new-staging-systems-for-skin-cancer
#15
J Cañueto, C Román-Curto
The eighth edition of the staging manual of the American Joint Committee on Cancer incorporates important changes in the classification of skin cancers. Coming 40 years after the first edition, the latest manual preserves its specific system for Merkel cell carcinoma and takes into account recent publications on the prognosis of squamous cell carcinoma by defining a completely new T category for this neoplasm. Staging for squamous cell carcinoma considers head and neck tumors (excluding the eyelid) and does not offer solutions for other sites except the vulva, penis, and perianal region...
July 18, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28730369/survival-analysis-in-rectal-carcinoma-after-neoadjuvant-chemoradiation-various-methods-with-different-results
#16
Susanne Merkel, Klaus Weber, Jonas Göhl, Abbas Agaimy, Rainer Fietkau, Werner Hohenberger, Robert Grützmann, Paul Hermanek
PURPOSE: Survival is an important indicator of outcome quality in rectal carcinoma. The 5-year survival rate is the typical outcome measurement. In patients with neoadjuvant chemoradiation followed by curative surgery, 7 years of follow-up is recommended. Different methods of survival analysis lead to different results. Here, we compared four different methods. METHODS: The data of 439 patients with rectal carcinoma treated with neoadjuvant chemoradiation followed by curative total mesorectal excision (TME) surgery between 1995 and 2010 were analysed...
July 20, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28726278/color-doppler-sonography-of-merkel-cell-carcinoma
#17
Orlando Catalano, Fernando Alfageme Roldán, Maria Scotto di Santolo, Francesco Maria Solivetti, Ximena Wortsman
We illustrate the color Doppler sonographic findings in primary cutaneous Merkel cell carcinoma. Eight cases (4 female and 4 male; mean age, 75.4 years) were collected. The most common affected regions were the face (63%) and the hip/buttock (25%). The mean transverse diameter and thickness were 21 and 14 mm, respectively. Fifty percent were oval, and 50% were dome shaped. All lesions were hypoechoic, with variable degrees of heterogeneity. All but 2 lesions were poorly defined. An acoustic reinforcement artifact was present in 3 and epidermal thickening in 2...
July 20, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28717398/preclinical-evaluation-of-nf-%C3%AE%C2%BAb-triggered-dendritic-cells-expressing-the-viral-oncogenic-driver-of-merkel-cell-carcinoma-for-therapeutic-vaccination
#18
Kerstin F Gerer, Michael Erdmann, Sine R Hadrup, Rikke Lyngaa, Lena-Marie Martin, Reinhard E Voll, Beatrice Schuler-Thurner, Gerold Schuler, Niels Schaft, Stefanie Hoyer, Jan Dörrie
BACKGROUND: Merkel cell carcinoma (MCC) is a rare but very aggressive skin tumor that develops after integration of a truncated form of the large T-antigen (truncLT) of the Merkel cell polyomavirus (MCV) into the host's genome. Therapeutic vaccination with dendritic cells (DCs) loaded with tumor antigens is an active form of immunotherapy, which intends to direct the immune system towards tumors which express the respective vaccination antigens. METHODS: Cytokine-matured monocyte-derived DCs of healthy donors and MCC patients were electroporated with mRNA encoding the truncLT...
July 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/28712323/management-of-cutaneous-merkel-cell-carcinoma
#19
William M Mendenhall, Christopher G Morris, Jessica M Kirwan, Robert J Amdur, Christiana Shaw, Peter T Dziegielewski
PURPOSE: To report the outcomes of patients with previously untreated cutaneous Merkel cell carcinoma (MCC) managed with curative intent. MATERIAL AND METHODS: Between December 1984 and August 2015, 59 patients with previously untreated cutaneous MCC were managed with curative intent with surgery and adjuvant radiotherapy (54 patients) or radiotherapy alone (5 patients) at the University of Florida. Primary sites included head and neck (45 patients), extremities (11 patients) and trunk (3 patients)...
July 15, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28699934/in-brief-avelumab-bavencio-for-metastatic-merkel-cell-carcinoma
#20
(no author information available yet)
No abstract text is available yet for this article.
July 17, 2017: Medical Letter on Drugs and Therapeutics
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