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Tian M, Wang T, Wang P. Development and Clinical Validation of a Seven-Gene Prognostic Signature Based on Multiple Machine Learning Algorithms in Kidney Cancer. Cell Transplant 2021; 30:963689720969176. [PMID: 33626918 PMCID: PMC7917425 DOI: 10.1177/0963689720969176] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
About a third of patients with kidney cancer experience recurrence or cancer-related progression. Clinically, kidney cancer prognoses may be quite different, even in patients with kidney cancer at the same clinical stage. Therefore, there is an urgent need to screen for kidney cancer prognosis biomarkers. Differentially expressed genes (DEGs) were identified using kidney cancer RNA sequencing data from the Gene Expression Omnibus (GEO) database. Biomarkers were screened using random forest (RF) and support vector machine (SVM) models, and a multigene signature was constructed using the least absolute shrinkage and selection operator (LASSO) regression analysis. Univariate and multivariate Cox regression analyses were performed to explore the relationships between clinical features and prognosis. Finally, the reliability and clinical applicability of the model were validated, and relationships with biological pathways were identified. Western blots were also performed to evaluate gene expression. A total of 50 DEGs were obtained by intersecting the RF and SVM models. A seven-gene signature (RNASET2, EZH2, FXYD5, KIF18A, NAT8, CDCA7, and WNT7B) was constructed by LASSO regression. Univariate and multivariate Cox regression analyses showed that the seven-gene signature was an independent prognostic factor for kidney cancer. Finally, a predictive nomogram was established in The Cancer Genome Atlas (TCGA) cohort and validated internally. In tumor tissue, RNASET2 and FXYD5 were highly expressed and NAT8 was lowly expressed at the protein and transcription levels. This model could complement the clinicopathological characteristics of kidney cancer and promote the personalized management of patients with kidney cancer.
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Affiliation(s)
- Mi Tian
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tao Wang
- Department of Pathology, Shenyang KingMed Center for Clinical Laboratory Co, Ltd, Shenyang, China
| | - Peng Wang
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, China
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Kalapara AA, Frydenberg M. The role of open radical nephrectomy in contemporary management of renal cell carcinoma. Transl Androl Urol 2020; 9:3123-3139. [PMID: 33457285 PMCID: PMC7807349 DOI: 10.21037/tau-19-327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Radical nephrectomy (RN) remains a cornerstone of the management of localised renal cell carcinoma (RCC). RN involves the en bloc removal of the kidney along with perinephric fat enclosed within Gerota's fascia. Key principles of open RN include appropriate incision for adequate exposure, dissection and visualisation of the renal hilum, and early ligation of the renal artery and subsequently renal vein. Regional lymph node dissection (LND) facilitates local staging but its therapeutic role remains controversial. LND is recommended in patients with high risk clinically localised disease, but its benefit in low risk node-negative and clinically node-positive patients is unclear. Concomitant adrenalectomy should be reserved for patients with large tumours with radiographic evidence of adrenal involvement. Despite a recent downtrend in utilisation of open RN due to nephron-sparing and minimally invasive alternatives, there remains a vital role for open RN in the management of RCC in three domains. Firstly, open RN is important to the management of large, complex tumours which would be at high risk of complications if treated with partial nephrectomy (PN). Secondly, open RN plays a crucial role in cytoreductive nephrectomy (CN) for metastatic RCC, in which the laparoscopic approach achieves similar results but is associated with a high reoperation rate. Finally, open RN is the current standard of care in the management of inferior vena caval (IVC) tumour thrombus. Management of tumour thrombus requires a multidisciplinary approach and varies with cranial extent of thrombus. Higher level thrombus may require hepatic mobilisation and circulatory support, whilst the presence of bland thrombus may warrant post-operative filter insertion or ligation of the IVC.
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Affiliation(s)
| | - Mark Frydenberg
- Department of Surgery, Monash University, Melbourne, Australia.,Cabrini Institute, Cabrini Health, Melbourne, Australia
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Zhao Q, Xue J, Hong B, Qian W, Liu T, Fan B, Cai J, Ji Y, Liu J, Yang Y, Li Q, Guo S, Zhang N. Transcriptomic characterization and innovative molecular classification of clear cell renal cell carcinoma in the Chinese population. Cancer Cell Int 2020; 20:461. [PMID: 32982583 PMCID: PMC7510315 DOI: 10.1186/s12935-020-01552-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/10/2020] [Indexed: 01/03/2023] Open
Abstract
Background Large-scale initiatives like The Cancer Genome Atlas (TCGA) performed genomics studies on predominantly Caucasian kidney cancer. In this study, we aimed to investigate genomics of Chinese clear cell renal cell carcinoma (ccRCC). Methods We performed whole-transcriptomic sequencing on 55 tumor tissues and 11 matched normal tissues from Chinese ccRCC patients. We systematically analyzed the data from our cohort and comprehensively compared with the TCGA ccRCC cohort. Results It found that PBRM1 mutates with a frequency of 11% in our cohort, much lower than that in TCGA Caucasians (33%). Besides, 31 gene fusions including 5 recurrent ones, that associated with apoptosis, tumor suppression and metastasis were identified. We classified our cohort into three classes by gene expression. Class 1 shows significantly elevated gene expression in the VEGF pathway, while Class 3 has comparably suppressed expression of this pathway. Class 2 is characterized by increased expression of extracellular matrix organization genes and is associated with high-grade tumors. Applying the classification to TCGA ccRCC patients revealed better distinction of tumor prognosis than reported classifications. Class 2 shows worst survival and Class 3 is a rare subtype ccRCC in the TCGA cohort. Furthermore, computational analysis on the immune microenvironment of ccRCC identified immune-active and tolerant tumors with significant increased macrophages and depleted CD4 positive T-cells, thus some patients may benefit from immunotherapies. Conclusion In summary, results presented in this study shed light into distinct genomic expression profiles in Chinese population, modified the stratification patterns by new molecular classification, and gave practical guidelines on clinical treatment of ccRCC patients.
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Affiliation(s)
- Qiang Zhao
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Urology, Peking University Cancer Hospital & Institute, 52 Fucheng Road, Haidian District, Beijing, 100142 People's Republic of China
| | - Jia Xue
- Systems Biology, Crown Bioscience Inc., No. 218 Xinghu Street, Suzhou Industrial Park, Suzhou, 215028 People's Republic of China
| | - Baoan Hong
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Urology, Peking University Cancer Hospital & Institute, 52 Fucheng Road, Haidian District, Beijing, 100142 People's Republic of China
| | - Wubin Qian
- Systems Biology, Crown Bioscience Inc., No. 218 Xinghu Street, Suzhou Industrial Park, Suzhou, 215028 People's Republic of China
| | - Tiezhu Liu
- Department of Urology, Daqing Oilfield General Hospital, Heilongjiang, 163316 People's Republic of China
| | - Bin Fan
- Crown Bioscience Inc., No.21 Huoju Street Changping District, Beijing, 102200 People's Republic of China
| | - Jie Cai
- Crown Bioscience Inc., No.21 Huoju Street Changping District, Beijing, 102200 People's Republic of China
| | - Yongpeng Ji
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Urology, Peking University Cancer Hospital & Institute, 52 Fucheng Road, Haidian District, Beijing, 100142 People's Republic of China
| | - Jia Liu
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Urology, Peking University Cancer Hospital & Institute, 52 Fucheng Road, Haidian District, Beijing, 100142 People's Republic of China
| | - Yong Yang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Urology, Peking University Cancer Hospital & Institute, 52 Fucheng Road, Haidian District, Beijing, 100142 People's Republic of China
| | - Qixiang Li
- Crown Bioscience Inc., 3375 Scott Blvd, Suite 108, Santa Clara, CA 95054 USA.,State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191 People's Republic of China
| | - Sheng Guo
- Systems Biology, Crown Bioscience Inc., No. 218 Xinghu Street, Suzhou Industrial Park, Suzhou, 215028 People's Republic of China
| | - Ning Zhang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Urology, Peking University Cancer Hospital & Institute, 52 Fucheng Road, Haidian District, Beijing, 100142 People's Republic of China
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Kato S, Demura S, Murakami H, Tsuchiya H. Surgical metastasectomy for renal cell carcinoma: which patients are the real candidates for surgery? ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:S273. [PMID: 32015992 DOI: 10.21037/atm.2019.11.139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Satoshi Kato
- Department of Orthopaedic Surgery, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Satoru Demura
- Department of Orthopaedic Surgery, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Hideki Murakami
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiroyuki Tsuchiya
- Department of Orthopaedic Surgery, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
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Mehralivand S, van der Poel H, Winter A, Choyke PL, Pinto PA, Turkbey B. Sentinel lymph node imaging in urologic oncology. Transl Androl Urol 2018; 7:887-902. [PMID: 30456192 PMCID: PMC6212622 DOI: 10.21037/tau.2018.08.23] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 08/19/2018] [Indexed: 12/15/2022] Open
Abstract
Lymph node (LN) metastases in urological malignancies correlate with poor oncological outcomes. Accurate LN staging is of great importance since patients can benefit from an optimal staging, accordingly aligned therapy and more radical treatments. Current conventional cross-sectional imaging modalities [e.g., computed tomography (CT) and magnetic resonance imaging (MRI)] are not accurate enough to reliably detect early LN metastases as they rely on size criteria. Radical lymphadenectomy, the surgical removal of regional LNs, is the gold standard of invasive LN staging. The LN dissection is guided by anatomic considerations of lymphatic drainage pathways of the primary tumor. Selection of patients for lymphadenectomy heavily relies on preoperative risk stratification and nomograms and, as a result a considerable number of patients unnecessarily undergo invasive staging with associated morbidity. On the other hand, due to individual variability in lymphatic drainage, LN metastases can occur outside of standard lymphadenectomy templates leading to potential understaging and undertreatment. In theory, metastases from the primary tumor need to pass through the chain of LNs, where the initial node is defined as the sentinel LN. In theory, identifying and removing this LN could lead to accurate assessment of metastatic status. Radiotracers and more recently fluorescent dyes and superparamagnetic iron oxide nanoparticles (SPION) are injected into the primary tumor or peritumoral and the sentinel LNs are identified intraoperatively by a gamma probe, fluorescent camera or a handheld magnetometer. Preoperative imaging [e.g., single-photon emission computed tomography (SPECT)/CT or MRI] after tracer injection can further improve preoperative planning of LN dissection. While sentinel LN biopsy is an accepted and widely used approach in melanoma and breast cancer staging, its use in urological malignancies is still limited. Most data published so far is in penile cancer staging since this cancer has a typical echelon-based lymphatic metastasizing pattern. More recent data is encouraging with low false-negative rates, but its use is limited to centers with high expertise. Current guidelines recommend sentinel LN biopsy as an accepted alternative to modified inguinal lymphadenectomy in patients with pT1G2 disease and non-palpable inguinal LNs. In prostate cancer, a high diagnostic accuracy could be demonstrated for the sentinel approach. Nevertheless, due to lack of data or high false-negative rates in other urological malignancies, sentinel LN biopsy is still considered experimental in other urological malignancies. More high-level evidence and longitudinal data is needed to determine its final value in those malignancies. In this manuscript, we will review sentinel node imaging for urologic malignancies.
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Affiliation(s)
- Sherif Mehralivand
- Department of Urology and Pediatric Urology, University Medical Center, Mainz, Germany
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Henk van der Poel
- Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, the Netherlands
| | - Alexander Winter
- University Hospital for Urology, Oldenburg Hospital, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany
| | - Peter L. Choyke
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Peter A. Pinto
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Baris Turkbey
- Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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Bonsib SM. Urologic Diseases Germane to the Medical Renal Biopsy: Review of a Large Diagnostic Experience in the Context of the Renal Architecture and Its Environs. Adv Anat Pathol 2018; 25:333-352. [PMID: 30036201 PMCID: PMC6086223 DOI: 10.1097/pap.0000000000000199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The kidney is one of the most complicated organs in development and is susceptible to more types of diseases than other organs. The disease spectrum includes developmental and cystic diseases, involvement by systemic diseases, iatrogenic complications, ascending infections and urinary tract obstruction, and neoplastic diseases. The diagnosis of kidney disease is unique involving 2 subspecialties, urologic pathology and renal pathology. Both renal and urologic pathologists employ the renal biopsy as a diagnostic modality. However, urologic pathologists commonly have a generous specimen in the form of a nephrectomy or partial nephrectomy while a renal pathologist requires ancillary modalities of immunofluorescence and electron microscopy. The 2 subspecialties differ in the disease spectrum they diagnose. This separation is not absolute as diseases of one subspecialty not infrequently appear in the diagnostic materials of the other. The presence of medical renal diseases in a nephrectomy specimen is well described and recommendations for reporting these findings have been formalized. However, urologic diseases appearing in a medical renal biopsy have received less attention. This review attempts to fill that gap by first reviewing the perirenal anatomy to illustrate why inadvertent biopsy of adjacent organs occurs and determine its incidence in renal biopsies followed by a discussion of gross anatomic features relevant to the microscopic domain of the medical renal biopsy. Unsuspected neoplasms and renal cysts and cystic kidney diseases will then be discussed as they create a diagnostic challenge for the renal pathologist who often has limited training and experience in these diseases.
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Mahesan T, Coscione A, Ayres B, Watkin N. Sentinel lymph node biopsy in renal malignancy: The past, present and future. World J Nephrol 2016; 5:182-188. [PMID: 26981443 PMCID: PMC4777790 DOI: 10.5527/wjn.v5.i2.182] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Revised: 12/02/2015] [Accepted: 01/11/2016] [Indexed: 02/06/2023] Open
Abstract
Sentinel lymph node biopsy (SLNB) is now an established technique in penile and pelvic cancers, resulting in a lower mortality and morbidity when compared with the traditional lymph node dissection. In renal cancer however, despite some early successes for the SLNB technique, paucity of data remains a problem, thus lymph node dissection and extended lymph node dissection remain the management of choice in clinically node positive patients, with surveillance of lymph nodes in those who are clinically node negative. SLNB is a rapidly evolving technique and the introduction of new techniques such as near infra-red fluorescence optical imaging agents and positron emission tomography/computed tomography scans, may improve sensitivity. Evidence in support of this has already been recorded in bladder and prostate cancer. Although the lack of large multi-centre studies and issues around false negativity currently prevent its widespread use, with evolving techniques improving accuracy and the support of large-scale studies, SLNB does have the potential to become an integral part of staging in renal malignancy.
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Bex A, Larkin J, Voss M. Challenging the treatment paradigm for advanced renal cell carcinoma: a review of systemic and localized therapies. Am Soc Clin Oncol Educ Book 2016:e239-47. [PMID: 25993179 DOI: 10.14694/edbook_am.2015.35.e239] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The current standard of care for the management of advanced renal cell carcinoma (RCC) revolves around systemic therapy with molecularly targeted agents. Over the last decade, a total of seven targeted drugs have been approved but, altogether, only exploit two molecular targets in this disease: the vascular endothelial growth factor (VEGF) axis and the mammalian target of rapamycin (mTOR). Introduction of these agents has markedly improved outcomes compared with those in the cytokine era, yet comparatively little progress has been made since registration of the first targeted therapeutics occurred 10 years ago. In this article, we review efforts to improve on this current treatment paradigm. We discuss novel targets in this disease and corresponding new agents under investigation. The article dedicates particular attention to targeted immunotherapeutics, which are rapidly emerging as a new category of interest in this disease. Last, we review current data supporting the use of surgical interventions to improve outcomes in patients with metastatic disease.
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Affiliation(s)
- Axel Bex
- From the Netherlands Cancer Institute, Amsterdam, Netherlands; The Royal Marsden NHS Foundation Trust, London, United Kingdom; Memorial Sloan Kettering Cancer Center, New York, NY; Weill Cornell Medical College, New York, NY
| | - James Larkin
- From the Netherlands Cancer Institute, Amsterdam, Netherlands; The Royal Marsden NHS Foundation Trust, London, United Kingdom; Memorial Sloan Kettering Cancer Center, New York, NY; Weill Cornell Medical College, New York, NY
| | - Martin Voss
- From the Netherlands Cancer Institute, Amsterdam, Netherlands; The Royal Marsden NHS Foundation Trust, London, United Kingdom; Memorial Sloan Kettering Cancer Center, New York, NY; Weill Cornell Medical College, New York, NY
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Bex A. Integrating metastasectomy and stereotactic radiosurgery in the treatment of metastatic renal cell carcinoma. EJC Suppl 2015. [PMID: 26217128 PMCID: PMC4041303 DOI: 10.1016/j.ejcsup.2013.07.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Axel Bex
- The Netherlands Cancer Institute, Department of Urology, Amsterdam, The Netherlands
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10
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Dabestani S, Bex A. Metastasectomy. KIDNEY CANCER 2015. [DOI: 10.1007/978-3-319-17903-2_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Local treatment of metastases such as metastasectomy or radiotherapy remains controversial in the treatment of metastatic renal cell carcinoma. To investigate the benefits and harms of various local treatments, we did a systematic review of all types of comparative studies on local treatment of metastases from renal cell carcinoma in any organ. Interventions included metastasectomy, radiotherapy modalities, and no local treatment. The results suggest that patients treated with complete metastasectomy have better survival and symptom control (including pain relief in bone metastases) than those treated with either incomplete or no metastasectomy. Nevertheless, the available evidence was marred by high risks of bias and confounding across all studies. Although the findings presented here should be interpreted with caution, they and the identified gaps in knowledge should provide guidance for clinicians and researchers, and directions for further research.
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Karmali RJ, Suami H, Wood CG, Karam JA. Lymphatic drainage in renal cell carcinoma: back to the basics. BJU Int 2014; 114:806-17. [PMID: 24841690 DOI: 10.1111/bju.12814] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Lymphatic drainage in renal cell carcinoma (RCC) is unpredictable, however, basic patterns can be observed in cadaveric and sentinel lymph node mapping studies in patients with RCC. The existence of peripheral lymphovenous communications at the level of the renal vein has been shown in mammals but remains unknown in humans. The sentinel lymph node biopsy technique can be safely applied to map lymphatic drainage patterns in patients with RCC. Further standardisation of sentinel node biopsy techniques is required to improve the clinical significance of mapping studies. Understanding lymphatic drainage in RCC may lead to an evidence-based consensus on the surgical management of retroperitoneal lymph nodes.
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Affiliation(s)
- Riaz J Karmali
- Department of Plastic Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Kates M, Lavery HJ, Brajtbord J, Samadi D, Palese MA. Decreasing rates of lymph node dissection during radical nephrectomy for renal cell carcinoma. Ann Surg Oncol 2012; 19:2693-9. [PMID: 22526899 DOI: 10.1245/s10434-012-2330-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Indexed: 11/18/2022]
Abstract
BACKGROUND The utility of lymph node dissection (LND) during radical nephrectomy for renal cell carcinoma (RCC) continues to be controversial, yet its use by urologists in the United States is unknown. We analyzed the incidence of and trends in LND from a large, nationally representative cancer registry. METHODS Using the Surveillance, Epidemiology, and End Results registry we identified 37,279 patients with RCC who underwent radical nephrectomy from 1988 to 2005. LND was defined as a surgeon removing ≥5 nodes; however, sensitivity tests were performed using cutoffs of ≥3 and ≥1 nodes. We analyzed changes in LND rates over time and used multivariable logistic regression to predict those who underwent LND. RESULTS Of the 37,279 patients with RCC, 2,463 (6.6 %) received a LND. There was a gradual decline in LND beginning in 1988 that accelerated after 1997, with the period of 1998-2005 having significantly decreased odds of LND compared with the period 1988-1997 (odds ratio [OR]: 0.65; 95 % confidence interval [95 % CI]: 0.59-0.71). This decline was driven primarily by a 63 % reduction in LND rates among localized tumors (p < .001). CONCLUSIONS There has been a significant decline in LND rates during radical nephrectomy for localized kidney cancer over the past 7 years. In contrast to prior estimates, very few urologists in the United States are removing ≥5 nodes during lymph node dissection for RCC.
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Affiliation(s)
- Max Kates
- Department of Urology, Mount Sinai Medical Center, New York, NY, USA
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Bex A. Metastasectomy. KIDNEY CANCER 2012. [DOI: 10.1007/978-3-642-21858-3_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Abstract
CONTEXT Although lymphadenectomy (lymph node dissection [LND]) is currently accepted as the most accurate and reliable staging procedure for the detection of lymph node invasion (LNI), its therapeutic benefit in renal cell carcinoma (RCC) still remains controversial. OBJECTIVE Review the available literature concerning the role of LND in RCC staging and outcome. EVIDENCE ACQUISITION A Medline search was conducted to identify original articles, review articles, and editorials addressing the role of LND in RCC. Keywords included kidney neoplasms, renal cell cancer, renal cell carcinoma, kidney cancer, lymphadenectomy, lymph node excision, lymphatic metastases, nephrectomy, imaging, and complications. The articles with the highest level of evidence were identified with the consensus of all of the collaborative authors and were critically reviewed. This review is the result of an interactive peer-reviewing process by an expert panel of co-authors. EVIDENCE SYNTHESIS Renal lymphatic drainage is unpredictable. The newer available imaging techniques are still immature in detecting small lymph node metastases. Results from the European Organization for Research and Treatment of Cancer trial 30881 showed no benefit in performing LND during surgery for clinically node-negative RCC, but the results are limited to patients with the lowest risk of developing LNI. Numerous retrospective series support the hypothesis that LND may be beneficial in high-risk patients (clinical T3-T4, high Fuhrman grade, presence of sarcomatoid features, or coagulative tumor necrosis). If enlarged nodes are evident at imaging or palpable during surgery, LND seems justified at any stage. However, the extent of the LND remains a matter of controversy. CONCLUSIONS To date, the available evidence suggests that an extended LND may be beneficial when technically feasible in patients with locally advanced disease (T3-T4) and/or unfavorable clinical and pathologic characteristics (high Fuhrman grade, larger tumors, presence of sarcomatoid features, and/or coagulative tumor necrosis). Although node-positive patients often harbor distant metastases as well, the majority of retrospective nonrandomized trials seem to suggest a possible benefit of regional LND even for this group of patients. In patients with T1-T2, clinically negative lymph nodes and absence of unfavorable clinical and pathologic characteristics, regional LND offers limited staging information and no benefit in terms of decreasing disease recurrence or improving survival.
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Abaza R, Lowe G. Feasibility and Adequacy of Robot-Assisted Lymphadenectomy for Renal-Cell Carcinoma. J Endourol 2011; 25:1155-9. [DOI: 10.1089/end.2010.0742] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ronney Abaza
- Robotic Urologic Surgery, Department of Urology, Ohio State University Medical Center & James Cancer Hospital, Columbus, Ohio
| | - Gregory Lowe
- Robotic Urologic Surgery, Department of Urology, Ohio State University Medical Center & James Cancer Hospital, Columbus, Ohio
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The current role of lymph node dissection in the management of renal cell carcinoma. Int J Surg Oncol 2011; 2011:816926. [PMID: 22312526 PMCID: PMC3263665 DOI: 10.1155/2011/816926] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 04/03/2011] [Indexed: 12/13/2022] Open
Abstract
The role of lymph node dissection remains controversial in the surgical management of renal cell carcinoma. Incidental renal masses are being diagnosed at increasing rates due to the routine use of CT scans. Despite the increase in incidental diagnosis of renal masses, 20% to 30% of patients present with metastatic disease. Currently, surgeons do not routinely perform lymph node dissection unless there is gross evidence of lymphadenopathy, as patients without clinical evidence of lymphadenopathy rarely have positive nodes at the time of surgery. Patients with metastatic disease to the regional lymph nodes have a poor overall prognosis. However, some evidence supports a therapeutic benefit of lymphadenectomy in these patients. Further, the staging information gained from diagnosing lymph node involvement may allow for the use of new agents to treat metastatic disease and effect outcomes.
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Intraoperative sentinel node identification and sampling in clinically node-negative renal cell carcinoma: initial experience in 20 patients. World J Urol 2010; 29:793-9. [DOI: 10.1007/s00345-010-0615-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 11/08/2010] [Indexed: 10/18/2022] Open
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Whitson JM, Reese AC, Meng MV. Factors associated with surgery in patients with renal cell carcinoma and venous tumor thrombus. BJU Int 2010; 107:729-734. [DOI: 10.1111/j.1464-410x.2010.09593.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bex A, Vermeeren L, de Windt G, Prevoo W, Horenblas S, Olmos RAV. Feasibility of sentinel node detection in renal cell carcinoma: a pilot study. Eur J Nucl Med Mol Imaging 2010; 37:1117-23. [PMID: 20111964 DOI: 10.1007/s00259-009-1359-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Accepted: 12/07/2009] [Indexed: 12/14/2022]
Abstract
PURPOSE Lymphatic drainage from renal cell carcinoma is unpredictable and the therapeutic benefit and extent of lymph node dissection are controversial. We evaluated the feasibility of intratumoural injection of a radiolabelled tracer to image and sample draining lymph nodes in clinically non-metastatic renal cell carcinoma. METHODS Eight patients with cT1-2 cN0 cM0 (<6 cm) renal cell carcinoma prospectively received percutaneous intratumoural injections of (99m)Tc-nanocolloid under ultrasound guidance (0.4 ml, 225 MBq at one to four intratumoural locations depending on tumour size). Lymphoscintigraphy was performed 20 min, 2 h and 4 h after injection. After the delayed images a hybrid SPECT/CT was performed. SPECT was fused with CT to determine the anatomical localization of the sentinel node. Surgery with sampling was performed the following day using a gamma probe and a portable mini gamma camera. RESULTS Eight patients, seven with right-sided renal cell carcinoma, were included with a mean age of 55 years (range: 45-77). The mean tumour size was 4 cm (range: 3.5-6 cm). Six patients had sentinel nodes on scintigraphy (two retrocaval, four interaortocaval, including one hilar) with one extraretroperitoneal location along the internal mammary chain. All nodes could be mapped and sampled. In two patients no drainage was visualized. Renal cell carcinomas were of clear cell subtype with no lymph node metastases. CONCLUSION Sentinel node identification using preoperative and intraoperative imaging to locate and sample the sentinel node at surgery in renal cell carcinoma is feasible. Sentinel node biopsy may clarify the pattern of lymphatic drainage and extent of lymphatic spread which may have diagnostic and therapeutic implications.
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Affiliation(s)
- Axel Bex
- Department of Urology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
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Hadley DA, Stephenson RA, Samlowski WE, Dechet CB. Patterns of enlarged lymph nodes in patients with metastatic renal cell carcinoma. Urol Oncol 2010; 29:751-5. [PMID: 20056460 DOI: 10.1016/j.urolonc.2009.10.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Revised: 10/19/2009] [Accepted: 10/19/2009] [Indexed: 11/16/2022]
Abstract
OBJECTIVE We reviewed the imaging studies of patients with known metastatic renal cell carcinoma (RCC) in order to more accurately assess where retroperitoneal lymphadenopathy occurs. METHODS The database of patients with metastatic RCC was reviewed and 101 patients were found from 2002 to 2006. Each patient's CT scans were then reviewed. Twenty-seven retroperitoneal sections were defined for each patient, with 3 positions in each of the x-, y-, and z-axis. Lymph nodes greater than 1 cm were then counted for each section. RESULTS Of the 101 patients, 31, of whom 28 qualified, were found to have retroperitoneal lymphadenopathy of a least 1 cm or greater. Two-thirds of nodes (87 out of 124) exhibited a suprahilar, intra-aortocaval, and retro-aortocaval trend of lymph node enlargement. Three patients (11%) had isolated infrahilar nodes, while 8 patients (29%) exhibited a skip lesion pattern by imaging criteria. Only 4 patients (14%) were noted to have lymph nodes that were confined to the ipsilateral (paraaortic or paracaval) nodes in the perihilar and infrahilar region, which would be readily accessible during renal surgery. CONCLUSIONS Lymphatic drainage in RCC is ill-defined, likely due to multiple lymphatic outflow channels. However, after a review of retroperitoneal lymphadenopathy imaging in patients with known metastatic RCC, there does seem to be a cephalad, posterior, and medial drainage pattern.
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Affiliation(s)
- David A Hadley
- Division of Urology, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA
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Shahani R, Kwan KG, Kapoor A. Safety and clinical efficacy of everolimus in the treatment of advanced renal cell carcinoma (RCC). DRUG HEALTHCARE AND PATIENT SAFETY 2010; 2:85-91. [PMID: 21701620 PMCID: PMC3108692 DOI: 10.2147/dhps.s6467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Indexed: 12/04/2022]
Abstract
Renal cell carcinoma (RCC) is one of the most lethal genitourinary malignancies. Recently, there has been a paradigm shift in the management of advanced RCC. New targeted therapies including vascular endothelial growth factor (VEGF) and mammalian target of rapamycin (mTOR) inhibitors have been developed which have shown promising results in a patient population who otherwise had very few options for treatment. The first mTOR inhibitor, temsirolimus, an intravenous prodrug, has shown improved overall survival in poor prognosis patients. More recently, an oral mTOR inhibitor, everolimus (RAD 001), has been developed which has been shown to delay disease progression in patients with metastatic RCC who have progressed on other targeted therapies. Although a survival advantage in phase III trials is seen with everolimus, associated systemic toxicities, while generally well tolerated, are not insignificant. These include mucositis, hyperglycemia, hyperlipidemia, and pneumonitis. Despite the side effects, emerging evidence points to everolimus as the optimal second-line treatment for patients with advanced renal cell carcinoma.
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Affiliation(s)
- Rohan Shahani
- Division of Urology, Department of Surgery, St. Joseph's Healthcare Hamilton and McMaster University, Hamilton, Ontario, Canada
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González ER, Lorenzo LMP. [Current role of lymphadenectomy and adrenalectomy in radical surgery for renal cancer]. Actas Urol Esp 2009; 33:562-8. [PMID: 19658310 DOI: 10.1016/s0210-4806(09)74190-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Radical nephrectomy is the only curative treatment for renal cell cancer. Standard treatment includes ipsilateral adrenalectomy and lymph node dissection. In recent years, development of nephron-sparing surgery and early detection of small renal tumors has led to question this approach. The role of lymphadenectomy and adrenalectomy in surgical treatment of renal cancer is reviewed.
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Ogunyemi O, Rojas A, Hematpour K, Rogers D, Head C, Bennett C. Metastasis of genitourinary tumors to the head and neck region. Eur Arch Otorhinolaryngol 2009; 267:273-9. [PMID: 19536555 PMCID: PMC2798081 DOI: 10.1007/s00405-009-1006-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2008] [Accepted: 06/03/2009] [Indexed: 12/30/2022]
Abstract
The objective of the present study is to characterize genitourinary tumors (GU) metastatic to the head and neck and to determine long-term prognoses. Using a retrospective chart review of 734 patients treated between January 1995 and May 2005 with an ICD-9 code pertaining to a metastatic head and neck cancer, we found 37 patients with primary GU tumors. There were 24 cases of prostate cancer, 10 cases of renal cell carcinoma, and 4 cases of transitional cell carcinoma. Sixteen of 24 patients (67%) with prostate cancer had a cranial metastasis while 6 of 9 (67%) patients with renal cell carcinoma had cerebral metastasis. We concluded that prolonged survival is possible in prostate cancer patients treated aggressively with radiation and chemotherapy, indicating that early detection and aggressive screening are important in these patients.
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Affiliation(s)
- Ore Ogunyemi
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Matuschek I, Merseburger AS, Kuczyk MA. [Value of lymph node dissection for renal cell carcinoma]. Urologe A 2008; 48:46-50. [PMID: 19066837 DOI: 10.1007/s00120-008-1759-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There are as yet no common standards regarding lymph node dissection during tumor nephrectomy. In order to assess prognoses and survival rates and ensure early detection of kidney tumors, a pathohistological staging following lymphadenopathy and new adjuvant therapies in metastatic disease have to be established in the future. The aims of lymph node dissection are - as far as the morbidity and performance status of the patient are concerned - accurate staging and a decrease in risk of tumor recurrence, particularly in organ-confined cancer disease.
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Affiliation(s)
- I Matuschek
- Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule, Carl-Neuberg-Strasse 1, 30625 Hannover
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Will TA, Agarwal N, Petruzzelli GJ. Oral cavity metastasis of renal cell carcinoma: a case report. J Med Case Rep 2008; 2:313. [PMID: 18823541 PMCID: PMC2566576 DOI: 10.1186/1752-1947-2-313] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2007] [Accepted: 09/29/2008] [Indexed: 01/19/2023] Open
Abstract
Introduction Despite being reported rarely, renal cell carcinoma is the third most frequent neoplasm to metastasize to the head and neck region preceded only by breast and lung cancer. Little information exists regarding the presentation and work-up of metastatic renal cell carcinoma in the oral cavity. Case presentation We report the case of a 63-year-old Caucasian man presenting with an oral cavity lesion that was painful and that had grown substantially over several months. Biopsy resulted in persistent bleeding requiring cautery and manual pressure. Immunoperoxidase testing was necessary to make the diagnosis of metastatic renal cell carcinoma and rule out other clear cell carcinomas of salivary gland origin. Conclusion Metastatic renal cell carcinoma is part of the differential diagnosis for patients presenting with a new head or neck lesion in the setting of a history of kidney cancer. The physician needs to be prepared for the increased risk of bleeding and understand the importance of immunohistochemical staining to differentiate between metastatic renal cell carcinoma and malignancies of salivary origin. Unfortunately, the prognosis is invariably poor in these patients.
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The importance of histology and cytogenetics in decision making for renal cell carcinoma. World J Urol 2008; 26:155-60. [DOI: 10.1007/s00345-008-0262-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Accepted: 03/24/2008] [Indexed: 10/22/2022] Open
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Godoy G, L. O'malley R, Taneja SS. Lymph node dissection during the surgical treatment of renal cancer in the modern era. Int Braz J Urol 2008; 34:132-42. [DOI: 10.1590/s1677-55382008000200002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2008] [Indexed: 11/22/2022] Open
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Hemal AK, Kumar A, Gupta NP, Kumar R. Oncologic outcome of 132 cases of laparoscopic radical nephrectomy with intact specimen removal for T1-2N0M0 renal cell carcinoma. World J Urol 2007; 25:619-26. [PMID: 17786453 DOI: 10.1007/s00345-007-0210-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2007] [Accepted: 08/04/2007] [Indexed: 10/22/2022] Open
Abstract
We present the short and long-term oncologic outcome of 132 patients with pathologically confirmed T1-T2, N0M0 renal cell carcinoma (RCC), who underwent laparoscopic radical nephrectomy with intact specimen removal at our institution. Beginning January 1998, we prospectively collected data of 132 patients undergoing laparoscopic radical nephrectomy, whose final pathologic stage was T1 or T2, N0M0, RCC. The clinical data of three groups categorized as group (pT1a)--36 patients, group (pT1b)--51 patients and group (pT2)--45 patients were analyzed statistically to assess oncological outcome. The specimens were removed intact without morcellation in all patients in a homemade plastic bag. The total median follow-up was 56 months (range 3-80 months) and there were no local or port-site recurrences or hernia. Patients with pT2 tumors had significantly greater operating time, blood loss and analgesic requirements than pT1a/pT1b tumor patients. The distant metastases were found in 1, 4 and 5 patients in group pT1a, pT1b and pT2, respectively. The 5-year cancer-specific survival was 97.2, 86.3 and 82.2%, respectively, in pT1a, pT1b and pT2 tumor patients (significantly lower in pT2 than pT1a, P = 0.008). The 5-year recurrence-free survival was 97.2, 84.3 and 82.2%, respectively, in pT1a, pT1b and pT2 tumor patients (significantly lower in pT2 than pT1a, P = 0.02). Laparoscopic radical nephrectomy (retroperitoneal and transperitoneal route) with intact specimen removal for localized renal cell carcinoma (T1-2N0M0) provides satisfactory short and long-term oncologic efficacy.
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Affiliation(s)
- Ashok K Hemal
- Department of Urology, All India Institute of Medical Sciences, New Delhi 110029, India.
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Ishikawa Y, Aida S, Tamai S, Akasaka Y, Kiguchi H, Akishima-Fukasawa Y, Hayakawa M, Soh S, Ito K, Kimura-Matsumoto M, Ishiguro S, Nishimura C, Kamata I, Shimokawa R, Ishii T. Significance of lymphatic invasion and proliferation on regional lymph node metastasis in renal cell carcinoma. Am J Clin Pathol 2007; 128:198-207. [PMID: 17638653 DOI: 10.1309/0ft8wtdkrefhhp4p] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
We studied the associations of lymphatic invasion and lymphatic vessel density around tumors with lymph node (LN) status in renal cell carcinoma (RCC) by immunohistochemical analysis using D2-40 antibody as a lymphatic marker. Surgically removed specimens from 76 cases with RCC, including 16 cases with LN metastasis, were used. Lymphatic vessel density around the tumor increased compared with normal kidneys but was not significant by LN status. Tumor size, tumor cell types, patterns of tumor growth, nuclear grade of tumor cells, venous invasion, lymphatic invasion, and primary tumor stage were predictive factors for LN metastasis. Based on multivariate regression analysis, only lymphatic invasion was an independent risk factor for LN metastasis. The immunohistochemical detection of lymphatics was useful for identifying the lymphatic invasion of RCC, and the presence of lymphatic invasion around RCC was an independent predictive factor for LN metastasis.
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Affiliation(s)
- Yukio Ishikawa
- Department of Pathology, Toho University School of Medicine, Tokyo, Japan
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Abstract
Tumor stage, which describes the anatomic extent of disease, is a powerful determinant of prognosis and survival for patients with renal cell carcinoma (RCC). Stratification of patients based on prognostic outcomes derived from staging systems facilitates therapeutic decision-making, disease surveillance, and clinical research. Staging for RCC has evolved from the Robson classification into the TNM system, developed by the International Union Against Cancer and the American Joint Committee on Cancer. The most recent revisions of the TNM system for RCC introduced in 1997 and 2002 further subdivided organ-confined tumors, reclassified tumors with venous involvement, and clarified the staging of tumors that invade the perisinus fat. Most studies suggest that these revisions have substantially improved prognostication for RCC. Nevertheless, additional modifications have been proposed that would alter the subclassification of organ-confined disease, integrate various levels of venous involvement with other aspects of local tumor aggressiveness, and upgrade the classification of adrenal involvement. The data in support of each of these proposals will be discussed, and the current limitations of clinical and radiographic staging for RCC will be reviewed. Finally, a glimpse into the future of staging of RCC will be offered with a discussion of integrated staging and prognostic systems.
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Affiliation(s)
- Carvell T Nguyen
- Glickman Urological Institute, Cleveland Clinic Foundation, OH 44195, USA
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Editorial Comment. J Urol 2006. [DOI: 10.1016/j.juro.2006.07.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mottet N. Place de la néphrectomie dans la prise en charge des cancers du rein métastatiques. ACTA ACUST UNITED AC 2006; 40:273-9. [PMID: 17100164 DOI: 10.1016/j.anuro.2006.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Metastatic kidney cancer is still a devastating disease but it represents a very heterogeneous situation. Some patients will have a median survival limited to some months, while others will live several years. If the initial diagnosis of kidney cancer at metastatic stage is quite uncommon, it raises the question of whether or not performing initial nephrectomy. The point was long debated as it was suggested that initial nephrectomy could result in a spontaneous metastase regression and protect against local complications (hematuria, local pain,...). Today, nephrectomy must not be systematic, as effective alternative treatments are often available. Furthermore spontaneous postoperative metastasis regression is unusual. Two recent prospective randomized trials clarified the impact of initial nephrectomy. It is now accepted that initial surgery prior to systemic immunotherapy results in 30% survival benefit. However this procedure should only be considered for highly selected cases: patients in otherwise good condition (ECOG 0-1), macroscopically complete local resection, no supra-hepatic caval thrombus, and patients suitable for systemic immunotherapy treatment. Several questions remain unanswered, such as lymph node dissection to be performed, and its real survival impact. Furthermore the definition of "suitable" patients for immunotherapy has to be clarified, based on the recent results from the Percy Quatro study. It would probably be more effective to consider only patients with an expected good survival benefit using immunotherapy, such as those classified as "good prognosis" based on the CRECY criteria. Finally the development of new drugs, targeting mainly the angiogenic pathway may lead to different future indications in this setting.
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Affiliation(s)
- N Mottet
- Clinique mutualiste, 3, rue Le Verrier, 42013 Saint-Etienne cedex 2, France.
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