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Papillary renal cell

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https://www.readbyqxmd.com/read/28620558/primary-renal-carcinoid-with-bilateral-multiple-clear-cell-papillary-renal-cell-carcinomas
#1
Daniel A Anderson, Maria S Tretiakova
Clear cell papillary renal cell carcinoma (CCPRCC) is a newly recognized entity in the 2016 WHO classification and usually presents as a small, circumscribed, solitary mass of indolent nature. CCPRCCs could seldom occur in conjunction with other synchronous or metachronous kidney tumors and even less frequently as bilateral masses. To our knowledge, multiple bilateral CCPRCCs have never been described with the existence of a synchronous well-differentiated neuroendocrine tumor of the kidney and hence reported here as a unique case...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28619631/histopathologic-analysis-of-tumor-bed-and-peritumoral-pseudocapsule-after-in-vitro-tumor-enucleation-on-radical-nephrectomy-specimen-for-clinical-t1b-renal-cell-carcinoma
#2
Qun Lu, Changwei Ji, Xiaozhi Zhao, Yao Fu, Suhan Guo, Guangxiang Liu, Shiwei Zhang, Xiaogong Li, Weidong Gan, Hongqian Guo
PURPOSE: This study was designed to assess the feasibility and histopathologic safety of tumor enucleation for renal cell carcinoma, through histopathologic analysis of the tumor bed and peritumoral pseudocapsule (PC) after in vitro tumor enucleation. MATERIALS AND METHODS: We studied 176 radical nephrectomy specimens for clinical T1b renal cell carcinoma in our institution, from January 2013-February 2016. Immediately after the kidney was excised, the tumor of radical specimen was enucleated in vitro...
June 12, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28600591/-renal-cell-carcinomas-in-childhood
#3
L Weisbach, A Aziz, M Fisch, S Riechardt
BACKGROUND: Renal cell carcinoma is a rare childhood disease. However, it should be considered in the differential diagnosis in the detection of a renal mass. OBJECTIVES: Incidence and mortality of renal cell carcinomas in childhood. Presentation of clinical symptoms, diagnostics, histology, therapy and course of the disease. PATIENTS AND METHODS: Evaluation of our own prospective data of a small patient population of 8 patients, as well as discussion of the current literature on this tumor entity...
June 9, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28596583/dynamic-contrast-enhanced-mri-in-renal-tumors-common-subtype-differentiation-using-pharmacokinetics
#4
Hai-Yi Wang, Zi-Hua Su, Xiao Xu, Ning Huang, Zhi-Peng Sun, Ying-Wei Wang, Lu Li, Ai-Tao Guo, Xin Chen, Xin Ma, Lin Ma, Hui-Yi Ye
Preoperative renal tumor subtype differentiation is important for radiology and urology in clinical practice. Pharmacokinetic data (K (trans) & V e, etc.) derived from dynamic contrast-enhanced MRI (DCE-MRI) have been used to investigate tumor vessel permeability. In this prospective study on DCE-MRI pharmacokinetic studies, we enrolled patients with five common renal tumor subtypes: clear cell renal cell carcinoma (ccRCC; n = 65), papillary renal cell carcinoma (pRCC; n = 12), chromophobic renal cell carcinoma (cRCC; n = 9), uroepithelial carcinoma (UEC; n = 14), and fat-poor angiomyolipoma (fpAML; n = 10)...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28593993/myc-activation-cooperates-with-vhl-and-ink4a-arf-loss-to-induce-clear-cell-renal-cell-carcinoma
#5
Sean T Bailey, Aleisha M Smith, Jordan Kardos, Sara E Wobker, Harper L Wilson, Bhavani Krishnan, Ryoichi Saito, Hyo Jin Lee, Jing Zhang, Samuel C Eaton, Lindsay A Williams, Ujjawal Manocha, Dorien J Peters, Xinchao Pan, Thomas J Carroll, Dean W Felsher, Vonn Walter, Qing Zhang, Joel S Parker, Jen Jen Yeh, Richard A Moffitt, Janet Y Leung, William Y Kim
Renal carcinoma is a common and aggressive malignancy whose histopathogenesis is incompletely understood and that is largely resistant to cytotoxic chemotherapy. We present two mouse models of kidney cancer that recapitulate the genomic alterations found in human papillary (pRCC) and clear cell RCC (ccRCC), the most common RCC subtypes. MYC activation results in highly penetrant pRCC tumours (MYC), while MYC activation, when combined with Vhl and Cdkn2a (Ink4a/Arf) deletion (VIM), produce kidney tumours that approximate human ccRCC...
June 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28592388/characterization-of-clinical-cases-of-advanced-papillary-renal-cell-carcinoma-via-comprehensive-genomic-profiling
#6
Sumanta K Pal, Siraj M Ali, Evgeny Yakirevich, Daniel M Geynisman, Jose A Karam, Julia A Elvin, Garrett M Frampton, Xuan Huang, Douglas I Lin, Mark Rosenzweig, Doron Lipson, Philip J Stephens, Jeffrey S Ross, Vincent A Miller, Neeraj Agarwal, Brian Shuch, Toni K Choueiri, Jon H Chung
BACKGROUND: Papillary renal cell carcinoma (PRCC) is a rare subset of RCC. The Cancer Genome Atlas (TCGA) data largely reflect localized disease, and there are limited data for advanced PRCC. OBJECTIVE: To characterize the frequency of genomic alterations (GAs) in patients with advanced PRCC for whom comprehensive genomic profiling (CGP) was performed in the context of routine clinical care. DESIGN, SETTING, AND PARTICIPANTS: Formalin-fixed, paraffin-embedded tissue was obtained for 169 consecutive patients with confirmed PRCC...
May 30, 2017: European Urology
https://www.readbyqxmd.com/read/28592361/ct-imaging-of-solid-renal-masses-pitfalls-and-solutions
#7
REVIEW
S Krishna, C A Murray, M D McInnes, R Chatelain, M Siddaiah, O Al-Dandan, S Narayanasamy, N Schieda
Computed tomography (CT) remains the first-line imaging test for the characterisation of renal masses; however, CT has inherent limitations, which if unrecognised, may result in errors. The purpose of this manuscript is to present 10 pitfalls in the CT evaluation of solid renal masses. Thin section non-contrast enhanced CT (NECT) is required to confirm the presence of macroscopic fat and diagnosis of angiomyolipoma (AML). Renal cell carcinoma (RCC) can mimic renal cysts at NECT when measuring <20 HU, but are usually heterogeneous with irregular margins...
June 4, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28591094/non-clear-cell-renal-cell-carcinomas-biological-insights-and-therapeutic-challenges-and-opportunities
#8
Gabriel G Malouf, Richard W Joseph, Amishi Y Shah, Nizar M Tannir
The non-clear cell renal cell carcinomas (nccRCCs) are a diverse group of rare-variant renal carcinomas. Each subtype harbors a distinct cell of origin and exhibits a distinct clinical behavior and response to therapy. The advent of next-generation sequencing has drastically advanced our understanding of key genetic and epigenetic drivers in these tumors, although mechanistic studies are needed to elucidate pathogenesis. The only 2 randomized clinical trials in nccRCC included patients with diverse histologic subtypes...
May 2017: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/28589387/non-invasive-papillary-urothelial-carcinoma-of-the-vagina-molecular-analysis-of-a-rare-case-identifies-clonal-relationship-to-non-invasive-urothelial-carcinoma-of-the-bladder
#9
Hind N Warzecha, Falko Fend, Julia Steinhilber, Harald Abele, Melanie Henes, Niklas Harland, Annette Staebler
We present a rare case of non-invasive papillary urothelial carcinoma of the vagina as the initial presentation of a multicentric urothelial carcinoma also involving bladder and renal pelvis and report for the first time in the literature the molecular alterations observed in the vaginal urothelial lesion and the synchronous lesions of the urinary tract. In this case, the non-invasive papillary urothelial carcinoma in the vagina displayed the same genetic alterations in the FGFR3 and PIK3CA genes as those seen in the non-invasive papillary urothelial carcinoma of the bladder contrasting with the wild phenotype observed in the invasive urothelial carcinoma of the renal pelvis...
June 7, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28588771/renal-metastases-as-the-initial-presentation-of-papillary-thyroid-carcinoma-a-case-report-and-literature-review
#10
Yunfei Gao, Weiye Deng, Yanfeng Chen, Yunping Fan, Zhuming Guo
Distant metastasis of thyroid carcinoma is rare, and it occurs particularly rarely in renal regions, which represent ~3% of all thyroid distant metastases, with fewer than 30 single case study reports existing in the literature. The present study (and subsequent literature review) of papillary thyroid carcinoma (PTC) reports the case of a 53-year-old male patient who presented with a left renal mass and who had no previous history of thyroid disease. Following renal and thyroid surgery, postoperative pathology confirmed the case to be a follicular variant of PTC, accompanied by renal metastasis...
June 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28585833/energetic-basis-for-inhibition-of-calcium-phosphate-biomineralization-by-osteopontin
#11
Meng Li, Lijun Wang, Christine V Putnis
Calcium oxalate kidney stones form attached to Randall's plaques (RP), calcium phosphate (Ca-P) deposits on the renal papillary surface. Osteopontin (OPN) suppresses crystal growth in the complex process of urinary stone formation, but the inhibitory role of active domains of OPN involved in the initial formation of the RPs attached to epithelial cells has yet to be clarified. Here we demonstrate the thermodynamic basis for how OPN sequences regulate the onset of Ca-P mineral formation on lipid rafts as a model membrane...
June 12, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28582447/action-of-ym155-on-clear-cell-renal-cell-carcinoma-does-not-depend-on-survivin-expression-levels
#12
Mei Yi Sim, Hung Huynh, Mei Lin Go, John Shyi Peng Yuen
The dioxonapthoimidazolium YM155 is a survivin suppressant which has been investigated as an anticancer agent in clinical trials. Here, we investigated its growth inhibitory properties on a panel of immortalized and patient derived renal cell carcinoma (RCC) cell lines which were either deficient in the tumour suppressor von Hippel-Lindau (VHL) protein or possessed a functional copy. Neither the VHL status nor the survivin expression levels of these cell lines influenced their susceptibility to growth inhibition by YM155...
2017: PloS One
https://www.readbyqxmd.com/read/28575845/renal-cell-carcinoma-histological-subtype-distribution-differs-by-age-gender-and-tumor-size-in-coastal-chinese-patients
#13
Junlong Wu, Peipei Zhang, Guiming Zhang, Hongkai Wang, Weijie Gu, Bo Dai, Hailiang Zhang, Guohai Shi, Yijun Shen, Yiping Zhu, Yao Zhu, Dingwei Ye
The distribution pattern of renal cell carcinoma (RCC) histological subtypes according to age, gender and tumor size has not been well illustrated in RCC patients living in fast-developing regions of China. We recruited 2941 patients with clear cell renal cell carcinoma (ccRCC), papillary renal cell carcinoma (PCC) or chromophobe from two hospitals in coastal China (2004-2012) consecutively and draw 538 American Chinese RCC patients' data with time matched from the Surveillance, Epidemiology, and End Results database...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28567709/renal-cell-cancers-unveiling-the-hereditary-ones-and-saving-lives-a-tailored-diagnostic-approach
#14
REVIEW
Georgios Kallinikas, Helai Habib, Dimitrios Tsimiliotis, Evangelos Koutsokostas, Barna Bokor
The prevalence of RCC in Europe is 2-3% and increasing every year. Hereditary predisposition is found in 5-8% of all RCC cases. Hereditary syndromes associated with RCC include: Von Hippel-Lindau, hereditary papillary renal cell carcinoma, Birt-Hogg-Dube', hereditary leiomyomatosis, succinate dehydrogenase's deficiency, tuberous sclerosis complex and Cowden's syndrome. These syndromes are related to specific genetic mutations. So far the European Association of Urology and American Urological Association have not established guidelines for referral of patients with RCC for germline mutation screening...
May 31, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28561708/systemic-therapy-for-non-clear-cell-renal-cell-carcinoma
#15
Tian Zhang, Jun Gong, Manuel Caitano Maia, Sumanta K Pal
Treatment options for metastatic clear cell renal cell carcinoma (ccRCC) have evolved markedly over the past decade, with multiple targeted therapies approved for the disease. In contrast, little improvement has been made in the management of metastatic non-clear cell RCC (nccRCC). Non-clear cell disease is an umbrella term that encompasses multiple biologically distinct entities, including but not limited to papillary, chromophobe, and sarcomatoid RCC. To date, prospective studies have largely explored treatments for ccRCC (e...
2017: American Society of Clinical Oncology Educational Book
https://www.readbyqxmd.com/read/28554741/a-contemporary-series-of-renal-masses-with-emphasis-on-recently-recognized-entities-and-tumors-of-low-malignant-potential-a-report-based-on-624-consecutive-tumors-from-a-single-tertiary-center
#16
Maria Rosaria Raspollini, Ilaria Montagnani, Rodolfo Montironi, Liang Cheng, Guido Martignoni, Andrea Minervini, Sergio Serni, Giulio Nicita, Marco Carini, Antonio Lopez-Beltran
INTRODUCTION: A number of new renal tumor entities have been recognized by the 2016 World Health Organization classification of urologic tumors. The classification includes tumors with different behavior and introduces one tumor with low malignant potential, the multilocular cystic clear cell renal cell neoplasm of low malignant potential (mcCCRCNLMP). However, some categories still labeled as "carcinoma", such as clear cell papillary renal cell carcinoma (CCPRCC), renal angioleiomyomatous tumor (RAT), and tubulocystic carcinoma (TCRCC), all with a particularly good prognosis when diagnosed as low stage, show no malignant behavior: in fact, no metastases have been reported in these categories when surgically excised...
March 12, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28551608/papillary-renal-cell-carcinoma-with-synchronous-ovarian-metastasis-a-rare-entity
#17
Ved Bhaskar, Manoj Kumar, Sunny Goel, Satyanarayan Sankhwar
No abstract text is available yet for this article.
May 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28546525/pazopanib-for-the-treatment-of-non-clear-cell-renal-cell-carcinoma-a-single-arm-open-label-multicenter-phase-ii-study
#18
Ki Sun Jung, Su Jin Lee, Se Hoon Park, Jae-Lyun Lee, Se-Hoon Lee, Jae Yun Lim, Jung Hun Kang, Suee Lee, Sun Young Rha, Kyung Hee Lee, Ho Young Kim, Ho Yeong Lim
Purpose: The optimal treatment strategy for patients with metastatic non-clear cell type renal cell carcinoma (nccRCC) remains unclear. Although several inhibitors of vascular endothelial growth factor have recently shown efficacy against nccRCC, the clinical benefit of pazopanib in nccRCC has not been analyzed. We therefore designed a single-arm, open-label, phase II study to determine the efficacy and safety of pazopanib in patients with nccRCC. Materials and Methods: Patients with locally advanced or metastatic nccRCC, except for collecting duct or sarcomatoid type, received 800mg/day of pazopanib daily until progression of disease or intolerable toxicity...
May 22, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28544435/solid-renal-masses-in-transplanted-allograft-kidneys-a-closer-look-at-the-epidemiology-and-management
#19
John J Griffith, Katherine A Amin, Nikhil Waingankar, Susan M Lerner, Veronica Delaney, Scott A Ames, Ketan Badani, Michael A Palese, Reza Mehrazin
The objective of this review is to explore the available literature on solid renal masses (SRM) in transplant allograft kidneys to better understand the epidemiology and management of these tumors. A literature review using PubMed was performed according to the PRISMA methodology. Fifty-six relevant studies were identified from 1988-2015. A total of 174 SRMs in 163 patients, were identified with a mean tumor size of 2.75 cm (0.5-9.0cm). Tumor histology was available in 164 (94.3%) tumors: clear cell renal cell carcinoma (RCC) (45...
May 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28539333/endothelial-markers-expressing-stromal-cells-are-critical-for-kidney-formation
#20
Elina Mukherjee, Katherine Virginia Maringer, Emily Papke, Daniel S Bushnell, Caitlin M Schaefer, Rafael Kramann, Jacqueline Ho, Benjamin D Humphreys, Carlton M Bates, Sunder Sims-Lucas
Kidneys are highly vascularized and contain many distinct vascular beds. However, the origins and roles of developing renal endothelial cells in the formation of the kidney are unclear. We have shown that the Foxd1-positive renal stroma gives rise to endothelial marker expressing progenitors that are incorporated within a subset of peritubular capillaries; however, the significance of these cells is unclear. The purpose of this study was to determine whether deletion of Flk1 in the Foxd1 stroma was important for renal development...
May 24, 2017: American Journal of Physiology. Renal Physiology
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