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Melanoma pathology

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https://www.readbyqxmd.com/read/28530256/can-the-onset-of-orbital-cancer-be-the-result-of-a-prosthetic-eye
#1
A Croce, V Mastronardi, M Laus, E Festa Kotelnikova
Orbital exenteration is a disfiguring procedure performed for unresponsive orbital infections and control of recurrent benign tumours and malignancies arising from the eyelids (basal cell carcinoma, squamous cell carcinoma, conjunctival malignant melanoma), lachrymal glands (adenoid cystic carcinoma) or surrounding sinuses. In extremely rare cases the use of a prosthetic eye after enucleation can lead to anophthalmic socket tumours. We report the case of a 54-year-old man who had left eye enucleation due to recurring events of retinal detachment and who developed an invasive fast growing epidermoid carcinoma 30 years later...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28512869/patterns-of-head-and-neck-sarcoma-in-australia
#2
Roger H Woods, J Alexa Potter, Jessica L Reid, Jennie Louise, Taryn Bessen, Gelareh Farshid, Susan J Neuhaus
BACKGROUND: Sarcomas affecting the head and neck often require complex management due to the combination of anatomic, aesthetic and oncological considerations. The incidence and patterns of presentation are poorly understood and have not been reviewed in the Australian population. METHOD: This study sourced incidence and demographic data from the National Cancer Registry at the Australian Institute of Health and Welfare for the years 1982-2009 (corresponding to 97...
May 16, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28504388/challenges-of-treating-melanoma-in%C3%A2-situ-lentigo-maligna-type-is-pathological-clearance-the-gold-standard
#3
S M Swetter
No abstract text is available yet for this article.
May 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28499411/paraneoplastic-acral-vascular-syndrome-in-a-patient-with-metastatic-melanoma-under-immune-checkpoint-blockade
#4
Thilo Gambichler, Stefanie Strutzmann, Andrea Tannapfel, Laura Susok
BACKGROUND: Paraneoplastic acral vascular syndrome (PAVS) is a rare phenomenon which is observed in patients with adenocarcinomas and other malignancies. Various potential pathogenic mechanisms such as tumour invasion of sympathetic nerves, hyperviscosity, hypercoagulability, vasoactive tumour-secreted substances, and immunological mechanisms have been suggested. CASE PRESENTATION: We report a 60-year-old Caucasian male attended our hospital with a bulky lymph node mass in the right axilla...
May 12, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28499052/outcomes-of-27-gauge-vitrectomy-assisted-choroidal-and-subretinal-biopsy
#5
Dilraj S Grewal, Thomas J Cummings, Prithvi Mruthyunjaya
BACKGROUND AND OBJECTIVE: To report the initial experience of 27-gauge vitrectomy-assisted choroidal and subretinal biopsy PATIENTS AND METHODS: Retrospective, interventional case series. Eighteen eyes of 18 patients undergoing 27-gauge vitrectomy-assisted choroidal (n = 16) or subretinal biopsy (n = 2). Clinical and lesion characteristics, cytopathology, histology, gene expression profiling (GEP), visual acuity (VA), complications including vitreous hemorrhage (VH), development of rhegmatogenous retinal detachment (RD), and need for additional surgeries were analyzed...
May 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28492371/prognostic-value-of-tumoral-expression-of-galectin-9-in-gastric-cancer
#6
Sang Il Choi, Ki Woo Seo, Myeong Cherl Kook, Chan Gyoo Kim, Young Woo Kim, Soo Jeong Cho
BACKGROUND/AIMS: Galectin-9 (Gal-9) is a member of the β-galactoside-binding lectin family. Our previous study revealed that Gal-9 suppresses migration, invasion, and epithelial-mesenchymal transition in gastric cancer cells. Gal-9 was reported to have anti-metastatic activity in patients with malignant melanoma, breast cancer, and hepatocellular carcinoma. Therefore, we aimed to evaluate the prognostic significance of Gal-9 in patients with gastric cancer. MATERIALS AND METHODS: The clinical significance of Gal-9 was explored using clinical and pathological data from 619 patients with gastric cancer who underwent gastrectomy at National Cancer Center, Korea...
May 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/28492005/longitudinal-melanonychia-in-an-iranian-population-a-study-of-96-patients
#7
Kambiz Kamyab, Maryam Abdollahi, Elaheh Nezam-Eslami, Azita Nikoo, Kamran Balighi, Zahra S Naraghi, Maryam Daneshpazhooh
BACKGROUND: Longitudinal melanonychia (LM) can be a challenging sign since it may be caused by a wide variety of benign and malignant conditions. Cutaneous melanoma is the most important cause of LM. Objective: We performed this study to examine different aspects of LM in Iran, where cutaneous melanoma is rare. METHODS: In this cross-sectional study, we reviewed medical records and pathology reports of a total of 96 patients presenting with LM. These patients had been visited and undergone nail biopsy in Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran...
June 2016: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/28489822/traf2-and-otud7b-govern-a-ubiquitin-dependent-switch-that-regulates-mtorc2-signalling
#8
Bin Wang, Zuliang Jie, Donghyun Joo, Alban Ordureau, Pengda Liu, Wenjian Gan, Jianping Guo, Jinfang Zhang, Brian J North, Xiangpeng Dai, Xuhong Cheng, Xiuwu Bian, Lingqiang Zhang, J Wade Harper, Shao-Cong Sun, Wenyi Wei
The mechanistic target of rapamycin (mTOR) has a key role in the integration of various physiological stimuli to regulate several cell growth and metabolic pathways. mTOR primarily functions as a catalytic subunit in two structurally related but functionally distinct multi-component kinase complexes, mTOR complex 1 (mTORC1) and mTORC2 (refs 1, 2). Dysregulation of mTOR signalling is associated with a variety of human diseases, including metabolic disorders and cancer. Thus, both mTORC1 and mTORC2 kinase activity is tightly controlled in cells...
May 10, 2017: Nature
https://www.readbyqxmd.com/read/28488020/-unusual-complication-following-placement-of-an-epidural-catheter
#9
M Schlipköter, T Grieser, H Forst
We report an unusual complication following placement of a thoracic epidural catheter in a patient that had undergone surgery for pulmonary metastases of a malignant melanoma. The intra- and postoperative course was initially without complications. At 2 days, there was a small, conspicuous swelling above the site of epidural puncture, which was neither reddened nor painful. No neurological deficits were observed, and the patient explained that he had been aware of the swelling for more than 6 months; thus, the epidural catheter was not deemed to be responsible...
May 9, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28482042/bap1-mutations-in-high-grade-meningioma-implications-for-patient-care
#10
Ganesh M Shankar, Sandro Santagata
We have recently shown that the BAP1 (BRCA1-associated protein-1) tumor suppressor gene is inactivated in a subset of clinically-aggressive meningiomas that display rhabdoid histomorphology. Immunohistochemistry for BAP1 protein provides a rapid and inexpensive method for screening suspected cases. Notably, some patients with BAP1-mutant meningiomas have germline BAP1 mutations and the BAP1 tumor predisposition syndrome (BAP1-TPDS). It appears that nearly all patients with germline BAP1 mutations develop malignancies by age 55, most frequently uveal melanoma, cutaneous melanoma, pleural or peritoneal malignant mesothelioma or renal cell carcinoma, although other cancers have also been associated with the BAP1-TPDS...
May 8, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28481878/the-ap-1-transcription-factor-fosl1-causes-melanocyte-reprogramming-and-transformation
#11
K Maurus, A Hufnagel, F Geiger, S Graf, C Berking, A Heinemann, A Paschen, S Kneitz, C Stigloher, E Geissinger, C Otto, A Bosserhoff, M Schartl, S Meierjohann
The MAPK pathway is activated in the majority of melanomas and is the target of therapeutic approaches. Under normal conditions, it initiates the so-called immediate early response, which encompasses the transient transcription of several genes belonging to the AP-1 transcription factor family. Under pathological conditions, such as continuous MAPK pathway overactivation due to oncogenic alterations occurring in melanoma, these genes are constitutively expressed. The consequences of a permanent expression of these genes are largely unknown...
May 8, 2017: Oncogene
https://www.readbyqxmd.com/read/28473727/cryptolepine-inhibits-melanoma-cell-growth-through-coordinated-changes-in-mitochondrial-biogenesis-dynamics-and-metabolic-tumor-suppressor-ampk%C3%AE-1-2-lkb1
#12
Harish C Pal, Ram Prasad, Santosh K Katiyar
Dysregulated mitochondrial dynamics and biogenesis have been associated with various pathological conditions including cancers. Here, we assessed the therapeutic effect of cryptolepine, a pharmacologically active alkaloid derived from the roots of Cryptolepis sanguinolenta, on melanoma cell growth. Treatment of human melanoma cell lines (A375, Hs294t, SK-Mel28 and SK-Mel119) with cryptolepine (1.0, 2.5, 5.0 and 7.5 μM) for 24 and 48 h significantly (P < 0.001) inhibited the growth of melanoma cells but not normal melanocytes...
May 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28472408/regulatortrail-a-web-service-for-the-identification-of-key-transcriptional-regulators
#13
Tim Kehl, Lara Schneider, Florian Schmidt, Daniel Stöckel, Nico Gerstner, Christina Backes, Eckart Meese, Andreas Keller, Marcel H Schulz, Hans-Peter Lenhof
Transcriptional regulators such as transcription factors and chromatin modifiers play a central role in most biological processes. Alterations in their activities have been observed in many diseases, e.g. cancer. Hence, it is of utmost importance to evaluate and assess the effects of transcriptional regulators on natural and pathogenic processes. Here, we present RegulatorTrail, a web service that provides rich functionality for the identification and prioritization of key transcriptional regulators that have a strong impact on, e...
May 2, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28472158/clinicopathological-features-and-prognosis-of-patients-with-de-novo-versus-nevus-associated-melanoma-in-taiwan
#14
Yi-Shuan Sheen, Yi-Hua Liao, Ming-Hsien Lin, Jau-Shiuh Chen, Jau-Yu Liau, Cher-Wei Liang, Yih-Leong Chang, Chia-Yu Chu
Studies surveying melanomas associated with melanocytic nevi in Asia are rare. In this study, we examined whether nevus-associated melanomas differ from de novo melanomas in terms of their associations with clinical factors, histologic characteristics, and patient survival in Taiwan. Using data on cancer cases obtained from the Department of Pathology archives and the Cancer Registry of National Taiwan University Hospital, we conducted a retrospective analysis of 103 consecutive melanoma patients who were diagnosed between 2010 and 2015 and received follow-up through November 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28455392/biomarker-accessible-and-chemically-addressable-mechanistic-subtypes-of-braf-melanoma
#15
Banu Eskiocak, Elizabeth McMillan, Saurabh Mendiratta, Rahul Kollipara, Hailei Zhang, Caroline Humphries, Changguang Wang, Jose Garcia-Rodriguez, Ming Ding, Aubhishek Zaman, Tracy Rosales, Ugur Eskiocak, Michael P Smith, Jessica Sudderth, Kakajan Komurov, Ralph J DeBerardinis, Claudia Wellbrock, Michael A Davies, Jennifer A Wargo, Yonghao Yu, Jef K De Brabander, Noelle S Williams, Lynda Chin, Helen Rizos, Georgina V Long, Ralf Kittler, Michael White
Genomic diversity among melanoma tumors limits durable control with conventional and targeted therapies. Nevertheless, pathological activation of the ERK1/2 pathway is a linchpin tumorigenic mechanism associated with the majority of primary and recurrent disease. Therefore, we sought to identify therapeutic targets that are selectively required for tumorigenicity in the presence of pathological ERK1/2 signaling. By integration of multi-genome chemical and genetic screens; recurrent architectural variants in melanoma tumor genomes; and patient outcome data; we identified 2 mechanistic subtypes of BRAF(V600) melanoma that inform new cancer cell biology and offer new therapeutic opportunities...
April 28, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28454298/expression-and-prognostic-relevance-of-mage-a3-and-mage-c2-in-non-small-cell-lung-cancer
#16
Xinfeng Chen, Liping Wang, Jinyan Liu, Lan Huang, Li Yang, Qun Gao, Xiaojuan Shi, Jieyao Li, Feng Li, Zhen Zhang, Song Zhao, Bin Zhang, Pierre Van der Bruggen, Yi Zhang
Melanoma-associated antigen (MAGE)-A3 and MAGE-C2 are antigens encoded by cancer-germline genes, and have been recognized as potential prognostic biomarkers and attractive targets for immunotherapy in multiple types of cancer. The present study aimed to analyze the clinicopathological significance of MAGE-A3/C2 expression in non-small cell lung cancer (NSCLC). The association between MAGE-A3/C2 mRNA and protein expression, and the pathological characteristics and overall survival of patients with NSCLC was analyzed...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28449573/a-case-of-ruptured-hepatic-angiomyolipoma-in-a-young-male
#17
Sun Hwa Kim, Tae Wook Kang, Kyunghee Lim, Hyun Sung Joh, Jiseok Kang, Dong Hyun Sinn
A 31-year-old male visited a local hospital due to sudden-onset severe abdominal pain. Abdominal computed tomography revealed a solid cystic mass with a size of approximately 12 cm and exhibiting both hemorrhage and fluid collection in the pelvic cavity. Emergency angiography and embolization were performed, and a large hepatic tumor was subsequently surgically resected. The tumor cells stained positive for human melanoma black-45 and smooth-muscle actin, and the pathologic diagnosis was hepatic angiomyolipoma...
April 28, 2017: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28447355/dermoscopy-pathology-correlation-in-melanoma
#18
REVIEW
Teresa Russo, Vincenzo Piccolo, Gerardo Ferrara, Marina Agozzino, Roberto Alfano, Caterina Longo, Giuseppe Argenziano
Dermoscopy is a widely used technique whose role in the clinical (and preoperative) diagnosis of melanocytic and non-melanocytic skin lesions has been well established in recent years. The aim of this paper is to clarify the correlations between the "local" dermoscopic findings in melanoma and the underlying histology, in order to help clinicians in routine practice.
May 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28447350/dermoscopy-pathology-relationship-in-seborrheic-keratosis
#19
REVIEW
Akane Minagawa
Making a definitive diagnosis of seborrheic keratosis (SK) can be challenging for the naked eye due to its wide variation in clinical features. Fortunately, however, most cases of SK exhibit the typical dermoscopic findings of fissures and ridges, hairpin vessels with white halo, comedo-like openings, and milia-like cysts, all of which are helpful to distinguish SK from melanoma, melanocytic nevus, squamous cell carcinoma, basal cell carcinoma (BCC) and other skin tumors. Histopathologically, these dermoscopic characteristics correspond to papillomatous surface of the epidermis, enlarged capillaries of the dermal papillae, pseudohorn cysts in the epidermis opened to the surface of the lesion and intraepidermal cysts, respectively...
May 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28445952/socs3-inhibits-the-pathological-effects-of-il-22-in-non-melanoma-skin-tumor-derived-keratinocytes
#20
Stefania Madonna, Claudia Scarponi, Martina Morelli, Rosanna Sestito, Pasqualina Liana Scognamiglio, Daniela Marasco, Cristina Albanesi
Basal cell carcinomas (BCC) and squamous-cell carcinomas (SCC) are common malignancies in humans, caused by neoplastic transformation of keratinocytes of the basal or suprabasal layers of epidermis, respectively. Tumor-infiltrating lymphocytes (TILs) are frequently found in BCC and SCC, and functionally promote epithelial carcinogenesis. TILs secreting IL-22, in particular, participate to BCC and SCC growth by inducing keratinocyte proliferation and migration, as well as the expression of inflammatory, anti-apoptotic and pro-angiogenic genes...
April 11, 2017: Oncotarget
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