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Melanoma pathology

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https://www.readbyqxmd.com/read/28639409/anti-pd-1-antibodies-in-metastatic-uveal-melanoma-a-treatment-option
#1
Carolin Bender, Alexander Enk, Ralf Gutzmer, Jessica C Hassel
Uveal melanomas (UMs) are a rare form of cancer with clinical and pathological characteristics distinct from cutaneous melanomas. Ipilimumab has shown efficacy and safety in the treatment of metastatic UM. This provides a rationale for treatment with other immune checkpoint inhibitors. This is a retrospective review of 15 patients with metastatic UM treated between June 2014 and February 2016, who received treatment with the anti-PD-1 Abs pembrolizumab or nivolumab. Patients were treated at two German university hospitals...
June 21, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28633808/impact-of-mr-guided-boiling-histotripsy-in-distinct-murine-tumor-models
#2
Martijn Hoogenboom, Dylan C Eikelenboom, Renske J E van den Bijgaart, Arend Heerschap, Pieter Wesseling, Martijn H den Brok, Jurgen J Fütterer, Gosse J Adema
Interest in mechanical high intensity focused ultrasound (HIFU) ablation is rapidly growing. Boiling histotripsy (BH) is applied for mechanical fragmentation of soft tissue into submicron fragments with limited temperature increase using the shock wave and cavitation effects of HIFU. Research on BH has been largely limited to ex vivo experiments. As a consequence, the in vivo pathology after BH treatment and the relation to preexistent tissue characteristics are not well understood. This study reports on in vivo MR guided BH treatment, either with 100 or 200 pulses per focal spot, in three different subcutaneous mouse tumor models: a soft-tissue melanoma (B16OVA), a compact growing thymoma (EL4), and a highly vascularized neuroblastoma (9464D)...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28631119/-expression-of-cancer-testis-ct-antigens-in-pediatric-and-adolescent-melanomas
#3
REVIEW
N Behrendt, T Schultewolter, K Busam, D Frosina, G Spagnoli, A Jungbluth
BACKGROUND: One of the main problems in the diagnostics of pediatric melanomas is the differentiation from benign dermal lesions typical for this age group, such as Spitz nevus. The biological behavior of pediatric melanomas differs considerably from that of melanomas in adults. MATERIAL AND METHODS: Cancer testis (CT) antigens are named after their typical expression pattern since they are present in various types of malignant tumors but in normal adult tissues are solely expressed in testicular germ cells...
June 19, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28625757/sentinel-node-biopsy-status-is-strongly-predictive-of-survival-in-cutaneous-melanoma-extended-follow-up-of-oxford-patients-from-1998-to-2014
#4
David R Thomson, Milap G Rughani, Rachel Kuo, Oliver C S Cassell
INTRODUCTION: Sentinel lymph node biopsy (SLNB) is widely used as a key investigatory tool for cutaneous melanoma, with results incorporated into the latest AJCC staging guidelines. We present the results of our extended follow-up of sentinel lymph node biopsy for melanoma over a sixteen-year period. METHODS: Data were collected prospectively from June 1998 to December 2014 from a single tertiary skin cancer referral centre. Chi-squared analysis was used to analyse patient demographics and primary tumour pathology...
May 27, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28624577/identification-of-an-immune-specific-class-of-hepatocellular-carcinoma-based-on-molecular-features
#5
Daniela Sia, Yang Jiao, Iris Martinez-Quetglas, Olga Kuchuk, Carlos Villacorta-Martin, Manuel Castro de Moura, Juan Putra, Genis Camprecios, Laia Bassaganyas, Nicholas Akers, Bojan Losic, Samuel Waxman, Swan N Thung, Vincenzo Mazzaferro, Manel Esteller, Scott L Friedman, Myron Schwartz, Augusto Villanueva, Josep M Llovet
BACKGROUND AND AIMS: Agents that induce an immune response against tumors by altering T-cell regulation have increased survival times of patients with advanced-stage tumors, such as melanoma or lung cancer. We aimed to characterize molecular features of immune cells that infiltrate hepatocellular carcinomas (HCCs) to determine whether these types of agents might be effective against liver tumors. METHODS: We analyzed HCC samples from 956 patients. We separated gene expression profiles from tumor, stromal, and immune cells using a non-negative matrix factorization algorithm...
June 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28619614/rapid-ex-vivo-examination-of-mohs-specimens-using-optical-coherence-tomography
#6
D Rashed, D Shah, A Freeman, R J Cook, C Hopper, C M Perrett
BACKGROUND: Mohs micrographic surgery (MMS) is an effective treatment for certain non-melanoma skin cancers. Optical coherence tomography (OCT) is a biomedical imaging modality that permits high-resolution imaging of the epidermis and dermis with the potential to detect both healthy tissue and tumour. OCT may also provide a means of detecting and differentiating between the various histological subtypes of basal cell carcinomas (BCC) in vivo. OBJECTIVE: The aim of this prospective ex vivo study was to evaluate the efficacy of OCT in recognising healthy and pathological margins of excised BCC lesions and detecting different BCC subtypes...
June 12, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28613106/innovative-array-based-assay-for-omics-pattern-in-melanoma
#7
Carmen Dumitru, Carolina Constantin, Cristiana Popp, Mirela Cioplea, Sabina Zurac, Tatiana Vassu, Monica Neagu
Cutaneous melanoma remains a major health issue and still an important challenge for research. Thus omics complex evaluation can provide a more specific molecular classification for this heterogeneous disease. Complex omics analysis based on genomic and proteomic microarrays can identify disease markers that prognosticate disease evolution or can monitor therapies efficacy. Among the technologies that gained momentum in the last years, array based comparative genomic hybridization offered the possibility to analyze chromosomal numerical aberrations within cutaneous melanomas providing important support for molecular classification of melanoma tumors...
June 14, 2017: Journal of Immunoassay & Immunochemistry
https://www.readbyqxmd.com/read/28612614/-malignant-melanoma-from-classical-histology-towards-molecular-genetic-testing
#8
A Ryška, O Horký, J Berkovcová, I Tichá, M Kalinová, M Matějčková, Á Bóday, J Drábek, P Martínek, J Šimová, K Sieglová, H Vošmiková
BACKGROUND: Malignant melanoma is - in comparison with other skin tumors - a relatively rare malignant neoplasm with highly aggressive biologic behavior and variable prognosis. Recent data in pathology and molecular diagnostics indicate that malignant melanoma is in fact not a single entity but a group of different neoplasms with variable etiopathogenesis, biologic behavior and prognosis. New therapeutic options using targeted treatment blocking MAPK signaling pathway require testing of BRAF gene mutation status...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28612591/clinical-signif%C3%A4-cance-of-serum-ykl-40-chitinase-3-like-1-protein-as-a-biomarker-in-melanoma-an-analysis-of-112-turkish-patients
#9
Kayhan Erturk, Faruk Tas, Murat Serilmez, Elif Bilgin, Vildan Yasasever
Background: Angiogenesis plays an essential role in tumor growth and serum levels of YKL-40 , a strong angiogenic factor that promotes tumor vessel development, has been found to be elevated in various cancers. We here investigated correlation between melanoma parameters and serum YKL-40 levels, to assess potential diagnostic, prognostic and predictive values. Material and Methods: Data for 112 pathologically confirmed cutaneous melanomas of any stage were examined retrospectively. ELISA assays were used to measure serum YKL-40 in plasma samples...
May 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28612483/laparoscopic-pelvic-lymph-node-dissection-for-malignant-foot-melanoma
#10
Sho Yamada, Masanori Kotake, Daiki Kakiuchi, Kengo Hayashi, Masahiro Hada, Yousuke Kato, Kaeko Oyama, Takuo Hara, Haruhisa Taizo
A 39 year-old woman with malignant foot melanoma underwent wide excision of the primary tumor with a safety margin and sentinel lymph node biopsy (SLNB) for the right inguinal lymph node. SLNB was positive and a computed tomography (CT) scan revealed right iliac lymph node swelling. Positron emission tomography computed tomography (PET-CT) scan of the lymph nodes revealed abnormal uptake of fluorodeoxyglucose (FDG). We performed a laparoscopic pelvic lymph node obturator, iliac lymph node) dissection. During the operation, several black lymph nodes were observed in the iliac lymph node...
June 13, 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28605380/establishment-of-a-clinic-based-biorepository
#11
Sarah E Belden, Chandana K Uppalapati, Agnes S Pascual, McKale R Montgomery, Kathryn J Leyva, Elizabeth E Hull, Richard L Averitte
The incidence of skin cancer (e.g., squamous cell carcinoma, basal cell carcinoma, and melanoma) has been increasing over the past several years. It is expected that there will be a parallel demand for cutaneous tumor samples for biomedical research studies. Tissue availability, however, is limited due the cost of establishing a biorepository and the lack of protocols available for obtaining clinical samples that do not interfere with clinical operations. A protocol was established to collect and process cutaneous tumor and associated blood and saliva samples that has minimal impact on routine clinical procedures on the date of a Mohs surgery...
May 29, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28599417/overexpression-of-the-anti-apoptotic-protein-bag3-in-human-choroidal-melanoma-a-case-report
#12
Tatsuya Yunoki, Yoshiaki Tabuchi, Takashi Kondo, Yoko Ishii, Atsushi Hayashi
Bcl-2-associated athanogene 3 (BAG3), a co-chaperone of heat shock protein 70 (HSP70), exerts anti-apoptotic effects in various malignant tumors. However, relationships between choroidal melanoma and BAG3 are poorly studied. This study investigated the expression of BAG3 in a case of human choroidal melanoma. Funduscopy, computed tomography, and single-photon emission computed tomography with the intravenous injection of N-isopropyl-p-[(123)I] iodoamphetamine strongly indicated choroidal melanoma in a 68-year-old woman...
June 2017: Oncology Letters
https://www.readbyqxmd.com/read/28598449/clinicopathological-study-of-malignant-melanoma-at-tertiary-care-centre
#13
S Thapa, A Ghosh, D Ghartimagar, T Prasad, R Narasimhan, O Talwar
INTRODUCTION: Malignant melanoma, which causes three fourth of all deaths related to skin cancer, is more common in Caucasian population compared to Asian population. There is no reliable information about malignant melanoma in Nepal hence an effort has been made to assess the clinical and pathological features of melanoma patients. METHODS: This was a retrospective hospital based study done in the department of Pathology. All cases of malignant melanoma diagnosed on biopsy during a period of 13 years were retrieved, reviewed and collated...
January 2017: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/28591523/completion-dissection-or-observation-for-sentinel-node-metastasis-in-melanoma
#14
RANDOMIZED CONTROLLED TRIAL
Mark B Faries, John F Thompson, Alistair J Cochran, Robert H Andtbacka, Nicola Mozzillo, Jonathan S Zager, Tiina Jahkola, Tawnya L Bowles, Alessandro Testori, Peter D Beitsch, Harald J Hoekstra, Marc Moncrieff, Christian Ingvar, Michel W J M Wouters, Michael S Sabel, Edward A Levine, Doreen Agnese, Michael Henderson, Reinhard Dummer, Carlo R Rossi, Rogerio I Neves, Steven D Trocha, Frances Wright, David R Byrd, Maurice Matter, Eddy Hsueh, Alastair MacKenzie-Ross, Douglas B Johnson, Patrick Terheyden, Adam C Berger, Tara L Huston, Jeffrey D Wayne, B Mark Smithers, Heather B Neuman, Schlomo Schneebaum, Jeffrey E Gershenwald, Charlotte E Ariyan, Darius C Desai, Lisa Jacobs, Kelly M McMasters, Anja Gesierich, Peter Hersey, Steven D Bines, John M Kane, Richard J Barth, Gregory McKinnon, Jeffrey M Farma, Erwin Schultz, Sergi Vidal-Sicart, Richard A Hoefer, James M Lewis, Randall Scheri, Mark C Kelley, Omgo E Nieweg, R Dirk Noyes, Dave S B Hoon, He-Jing Wang, David A Elashoff, Robert M Elashoff
BACKGROUND: Sentinel-lymph-node biopsy is associated with increased melanoma-specific survival (i.e., survival until death from melanoma) among patients with node-positive intermediate-thickness melanomas (1.2 to 3.5 mm). The value of completion lymph-node dissection for patients with sentinel-node metastases is not clear. METHODS: In an international trial, we randomly assigned patients with sentinel-node metastases detected by means of standard pathological assessment or a multimarker molecular assay to immediate completion lymph-node dissection (dissection group) or nodal observation with ultrasonography (observation group)...
June 8, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28587971/a-case-of-clear-cell-sarcoma-a-rare-malignancy
#15
Jacob Juel, Rami Mossad Ibrahim
INTRODUCTION: Clear cell sarcoma (CCS) is a rare tumour of the soft tissue often misdiagnosed, as it shares characteristics with malignant melanoma (MM). Previously, CCS has been characterised, as malignant melanoma of the soft tissue, contemporary immunohistochemical techniques, however, have made this designation obsolete. The true incidence remains unknown, but CCS is believed to represent less than one percent of all sarcomas. PRESENTATION OF CASE: A 22-year-old patient presented with a mass sized 2...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28569457/advances-in-radioguided-surgery-in-oncology
#16
Renato A Valdés Olmos, Sergi Vidal-Sicart, Gianpiero Manca, Giuliano Mariani, Luisa F León-Ramírez, Domenico Rubello, Francesco Giammarile
The sentinel lymph node (SLN) biopsy is probably the most well known radioguided technique in surgical oncology. Today SLN biopsy reduces the morbidity associated with lymphadenectomy and increases the identification rate of occult lymphatic metastases by offering the pathologist the lymph nodes with the highest probability of containing metastatic cells. These advantages may result in a change in clinical clinical management both in melanoma and breast cancer patients. The SLN evaluation by pathology currently implies tumour burden stratification for further prognostic information...
June 1, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28569009/myeloid-sarcoma-identified-on-liquid-based-cervical-cytology-samples-a-report-of-two-cases
#17
Jessica S Snider, Yekaterina Eichel, Alisa M Caudell, Olga S Chajewski, Jack Yang, Kathryn G Lindsey
The purpose of the Papanicolaou (Pap) smear is to detect primary squamous lesions of the uterine cervix. Although most successful at detection of squamous lesions, the Pap may also detect metastatic carcinomas, sarcomas, and melanomas. We report two rare cases of myeloid sarcoma (MS) of the uterine cervix identified on screening Pap smears with concurrent confirmatory cervical biopsies. The purpose of our study is to identify and report cytologic features of MS on Pap smears utilizing a liquid-based ThinPrep method, which has not been previously documented in literature...
May 31, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28566910/acral-lentiginous-melanoma-indolent-subtype-diagnosed-by-en-bloc-excision-a-case-report
#18
Jungyoon Ohn, Jeong Mo Bae, Ji Soo Lim, Jong Seo Park, Hyun-Sun Yoon, Soyun Cho, Hyun-Sun Park
Nail unit melanoma is a type of acral lentiginous melanoma and requires histopathologic examination for a confirmed diagnosis. However, inadequate biopsy techniques make definitive diagnosis difficult. A 61-year-old man presented with progressive nail pigmentation for 15 years, which was clinically highly suspicious for malignancy. Acral lentiginous melanoma was not detected in punch and longitudinal biopsy specimens, but en bloc excision tissue revealed melanoma. Acral lentiginous melanoma is known to have a heterogeneous pathologic manifestation depending on the pigmented region and the time it takes to progress...
June 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28555249/anatomy-of-the-cutaneous-lymphatic-system-of-the-trunk-a-clinico-anatomical-study-of-90-cutaneous-melanomas
#19
A Bonmarchand, D Coquerel-Beghin, A B Duval-Modeste, J Le Cloirec, F Duparc, I Auquit-Auckbur
PURPOSE: The cutaneous lymphatic system of the trunk is a complex network, the anatomical knowledge of which remains unclear. The lymphatic system plays a major role in the dissemination of lymphophilic cancers like melanomas. The aim of this study was to improve our knowledge, optimize the care of patients with cutaneous tumors of the trunk, and to use our clinical experience of the topography of pathologic lymph nodes related to cutaneous melanomas and depicted by lymphoscintigraphy...
May 29, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28541884/an-incomplete-picture-challenges-of-partial-biopsies-in-large-diameter-atypical-melanocytic-lesions
#20
Lauren C Strazzulla, Hong Wu, Marissa Heller, Caroline C Kim
Large diameter atypical pigmented lesions (LDAPL) can be challenging to diagnose accurately using partial biopsies because of pathologic heterogeneity, while at the same time large excisions of these lesions confer significant morbidity to patients. Consequently, clinicians are often challenged by the management of these lesions. In this case, we describe an elderly patient with a history of multiple basal cell carcinomas, prior melanomas, and a family history of melanoma who presented with an irregularly pigmented brown and dark brown patch on his upper back...
April 15, 2017: Dermatology Online Journal
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