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Huang W, Peng Y, Zhang Y, Qiu Y, Liu Y, Wang A, Kang L. Multimodality imaging of Xp11.2 translocation/TFE3 gene fusion associated with renal cell carcinoma: a case report. Front Med (Lausanne) 2023; 10:1266630. [PMID: 37795411 PMCID: PMC10546202 DOI: 10.3389/fmed.2023.1266630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 08/31/2023] [Indexed: 10/06/2023] Open
Abstract
Background Xp11.2 translocation/TFE3 gene fusion associated with renal cell carcinoma (Xp11.2 RCC) exhibits unique biological characteristics and is associated with an increased incidence of tumor thrombosis, lymph node metastasis, and advanced disease stages. Multimodality imaging, including US, contrast-enhanced CT, multi-parametric MRI, and 18F-FDG PET/CT plays a crucial role in the preoperative diagnosis and differentiation of renal tumors. Case report A 15-year-old female presented with lumbar pain worsened, and developed persistent painless hematuria. The CT attenuation values of the scan without contrast, corticomedullary phase, nephrographic phase, and delayed phases were 35 HU, 83 HU, 82 HU, and 75 HU, respectively. The solid component of the mass displayed heterogeneous marked enhancement. Furthermore, MRU indicated that the lesion involved the cortical medulla and infringed on the renal sinus fat. The lesion appeared isosignal in T1WI, slightly low signal in T2WI, and slightly high signal in DWI. The degree of enhancement in the three phases of enhancement scan was lower than that in the renal parenchyma, and hemorrhage and necrosis were observed within the internal part of the lesion. To further clarify the staging, the patient underwent 18F-FDG PET/CT. PET/CT images showed multiple irregular occupancies in the right kidney with unclear borders, showing a heterogeneous increase in 18F-FDG uptake, with SUVmax values ranging from 2.3 to 5.2 in the routine imaging phase (60 min post-injection), compared to SUVmax values ranging from 2.8 to 6.9 in the delayed imaging phase (160 min post-injection). Additionally, multiple enlarged and fused lymph nodes were observed in the medial part of the right kidney and the retroperitoneum, exhibiting a heterogeneous increase in 18F-FDG uptake, with SUVmax values ranging from 4.1 to 8.7 in the routine imaging phase, compared to SUVmax values ranging from 4.4 to 9.1 in the delayed imaging phase. The postoperative pathology, immunohistochemistry, and molecular analysis of histiocytes were consistent with a diagnosis of Xp11.2 RCC. One month after surgery, enhanced-CT examination of the patient revealed lung metastasis, peritoneal metastasis, and multiple lymph node metastases throughout the body, with an overall survival of 16 months. Conclusion Xp11.2 RCC exhibits unique biological characteristics and is associated with an increased incidence of tumor thrombosis, lymph node metastasis, and advanced disease stages. Long-term follow-up is essential to monitor the likelihood of recurrence and metastasis. 18F-FDG PET/CT examination can comprehensively visualize the lesion's location and extent, providing a basis for clinical tumor staging and aiding in treatment monitoring and follow-up. To address the limitations of FDG, the utilization of specific tracers designed for RCC or tracers that are not excreted via the urinary system would be ideal. Further advancements in molecular imaging technologies and the development of novel tracers hold great promise in advancing the diagnosis and management of RCC, ultimately contributing to better patient outcomes and overall disease management.
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Affiliation(s)
- Wenpeng Huang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, China
| | - Yushuo Peng
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, China
| | - Yongbai Zhang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, China
| | - Yongkang Qiu
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, China
| | - Yi Liu
- Department of Urology, Peking University First Hospital, Beijing, China
- Institute of Urology, Peking University, Beijing, China
- National Urological Cancer Center, Beijing, China
| | - Aixiang Wang
- Department of Urology, Peking University First Hospital, Beijing, China
- Institute of Urology, Peking University, Beijing, China
- National Urological Cancer Center, Beijing, China
| | - Lei Kang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing, China
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MRI Characteristics of Pediatric and Young-Adult Renal Cell Carcinoma: A Single-Center Retrospective Study and Literature Review. Cancers (Basel) 2023; 15:cancers15051401. [PMID: 36900194 PMCID: PMC10000563 DOI: 10.3390/cancers15051401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/09/2023] [Accepted: 02/17/2023] [Indexed: 02/25/2023] Open
Abstract
Pediatric renal cell carcinoma (RCC) is a rare malignancy. Magnetic resonance imaging (MRI) is the preferred imaging modality for assessment of these tumors. The previous literature has suggested that cross-sectional-imaging findings differ between RCC and other pediatric renal tumors and between RCC subtypes. However, studies focusing on MRI characteristics are limited. Therefore, this study aims to identify MRI characteristics of pediatric and young-adult RCC, through a single-center case series and literature review. Six identified diagnostic MRI scans were retrospectively assessed, and an extensive literature review was conducted. The included patients had a median age of 12 years (63-193 months). Among other subtypes, 2/6 (33%) were translocation-type RCC (MiT-RCC) and 2/6 (33%) were clear-cell RCC. Median tumor volume was 393 cm3 (29-2191 cm3). Five tumors had a hypo-intense appearance on T2-weighted imaging, whereas 4/6 were iso-intense on T1-weighted imaging. Four/six tumors showed well-defined margins. The median apparent diffusion coefficient (ADC) values ranged from 0.70 to 1.20 × 10-3 mm2/s. In thirteen identified articles focusing on MRI characteristics of MiT-RCC, the majority of the patients also showed T2-weighted hypo-intensity. T1-weighted hyper-intensity, irregular growth pattern and limited diffusion-restriction were also often described. Discrimination of RCC subtypes and differentiation from other pediatric renal tumors based on MRI remains difficult. Nevertheless, T2-weighted hypo-intensity of the tumor seems a potential distinctive characteristic.
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Wu Y, Chen S, Zhang M, Liu K, Jing J, Pan K, Zhang L, Xu B, Lu X, Chen M. Factors Associated with Survival From Xp11.2 Translocation Renal Cell Carcinoma Diagnosis-A Systematic Review and Pooled Analysis. Pathol Oncol Res 2021; 27:610360. [PMID: 34257577 PMCID: PMC8262176 DOI: 10.3389/pore.2021.610360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/03/2021] [Indexed: 12/15/2022]
Abstract
Purpose: Xp11.2 translocation renal cell carcinoma (Xp11.2 tRCC) is a rare subtype of renal cell carcinoma (RCC), characterized by translocations of Xp11.2 breakpoints, involving of the transcription factor three gene (TFE3). The aim of our study was to comprehensively characterize the clinical characteristics and outcomes, and to identify risk factors associated with OS and PFS in Xp11.2 tRCC patients. Methods: Literature search on Xp11.2 tRCC was performed using databases such as pubmed EMBASE and Web of Science. Studies were eligible if outcomes data (OS and/or PFS) were reported for patients with a histopathologically confirmed Xp11.2 tRCC. PFS and OS were evaluated using the univariable and multivariable Cox regression model. Results: There were 80 eligible publications, contributing 415 patients. In multivariable analyses, the T stage at presentation was significantly associated with PFS (HR: 3.87; 95% CI: 1.70 to 8.84; p = 0.001). The median time of PFS was 72 months. In the multivariable analyses, age at diagnosis (HR: 2.16; 95% CI: 1.03 to 4.50; p = 0.041), T stage at presentation (HR: 4.44; 95% CI: 2.16 to 9.09; p < 0.001) and metastasis status at presentation (HR: 2.67; 95% CI: 1.12 to 6.41; p = 0.027) were all associated with OS, with a median follow-up time of 198 months. Conclusion: T stage at presentation is the only factor that is associated with both PFS and OS in patients with Xp11.2 tRCC. Also, patients over 45 or with metastases are more likely to have poorer OS.
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Affiliation(s)
- Yuqing Wu
- Surgical Research Center, Institute of Urology, School of Medicine, Southeast University, Nanjing, China.,Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Saisai Chen
- Surgical Research Center, Institute of Urology, School of Medicine, Southeast University, Nanjing, China.,Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Minhao Zhang
- Surgical Research Center, Institute of Urology, School of Medicine, Southeast University, Nanjing, China.,Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Kuangzheng Liu
- Surgical Research Center, Institute of Urology, School of Medicine, Southeast University, Nanjing, China.,Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Jibo Jing
- Surgical Research Center, Institute of Urology, School of Medicine, Southeast University, Nanjing, China.,Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Kehao Pan
- Surgical Research Center, Institute of Urology, School of Medicine, Southeast University, Nanjing, China.,Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Lihua Zhang
- Department of Pathology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Bin Xu
- Surgical Research Center, Institute of Urology, School of Medicine, Southeast University, Nanjing, China.,Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Xiaoming Lu
- Department of Urology, Yancheng Third People's Hospital, Yancheng, China
| | - Ming Chen
- Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,Lishui People's Hospital, Nanjing, China
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van der Beek JN, Geller JI, de Krijger RR, Graf N, Pritchard-Jones K, Drost J, Verschuur AC, Murphy D, Ray S, Spreafico F, Dzhuma K, Littooij AS, Selle B, Tytgat GAM, van den Heuvel-Eibrink MM. Characteristics and Outcome of Children with Renal Cell Carcinoma: A Narrative Review. Cancers (Basel) 2020; 12:E1776. [PMID: 32635225 PMCID: PMC7407101 DOI: 10.3390/cancers12071776] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 12/20/2022] Open
Abstract
Pediatric renal cell carcinoma (RCC) is a rare type of kidney cancer, most commonly occurring in teenagers and young adolescents. Few relatively large series of pediatric RCC have been reported. Knowledge of clinical characteristics, outcome and treatment strategies are often based on the more frequently occurring adult types of RCC. However, published pediatric data suggest that clinical, molecular and histological characteristics of pediatric RCC differ from adult RCC. This paper summarizes reported series consisting of ≥10 RCC pediatric patients in order to create an up-to-date overview of the clinical and histopathological characteristics, treatment and outcome of pediatric RCC patients.
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Affiliation(s)
- Justine N. van der Beek
- Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands; (R.R.d.K.); (J.D.); (A.S.L.); (G.A.M.T.); (M.M.v.d.H.-E.)
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht/Wilhelmina Children’s Hospital, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - James I. Geller
- Division of Oncology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, OH 45229, USA;
| | - Ronald R. de Krijger
- Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands; (R.R.d.K.); (J.D.); (A.S.L.); (G.A.M.T.); (M.M.v.d.H.-E.)
- Department of Pathology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - Norbert Graf
- Department of Pediatric Oncology & Hematology, Saarland University Medical Center and Saarland University Faculty of Medicine, D-66421 Homburg, Germany;
| | - Kathy Pritchard-Jones
- UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK; (K.P.-J.); (K.D.)
| | - Jarno Drost
- Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands; (R.R.d.K.); (J.D.); (A.S.L.); (G.A.M.T.); (M.M.v.d.H.-E.)
- Oncode Institute, 3521 AL Utrecht, The Netherlands
| | - Arnauld C. Verschuur
- Department of Pediatric Oncology, Hôpital d’Enfants de la Timone, APHM, 13005 Marseille, France;
| | - Dermot Murphy
- Department of Paediatric Oncology, Royal Hospital for Children, Glasgow G51 4TF, Scotland; (D.M.); (S.R.)
| | - Satyajit Ray
- Department of Paediatric Oncology, Royal Hospital for Children, Glasgow G51 4TF, Scotland; (D.M.); (S.R.)
| | - Filippo Spreafico
- Pediatric Oncology Unit, Department of Medical Oncology and Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milano, Italy;
| | - Kristina Dzhuma
- UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK; (K.P.-J.); (K.D.)
| | - Annemieke S. Littooij
- Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands; (R.R.d.K.); (J.D.); (A.S.L.); (G.A.M.T.); (M.M.v.d.H.-E.)
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht/Wilhelmina Children’s Hospital, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Barbara Selle
- Department of Pediatric Hematology and Oncology, St. Annastift Children’s Hospital, 67065 Ludwigshafen, Germany;
| | - Godelieve A. M. Tytgat
- Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands; (R.R.d.K.); (J.D.); (A.S.L.); (G.A.M.T.); (M.M.v.d.H.-E.)
| | - Marry M. van den Heuvel-Eibrink
- Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands; (R.R.d.K.); (J.D.); (A.S.L.); (G.A.M.T.); (M.M.v.d.H.-E.)
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Wei S, Tian F, Xia Q, Huang P, Zhang Y, Xia Z, Wu M, Yang B. Contrast-enhanced ultrasound findings of adult renal cell carcinoma associated with Xp11.2 translocation/TFE3 gene fusion: comparison with clear cell renal cell carcinoma and papillary renal cell carcinoma. Cancer Imaging 2019; 20:1. [PMID: 31892340 PMCID: PMC6938633 DOI: 10.1186/s40644-019-0268-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 11/22/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To investigate the contrast-enhanced ultrasound (CEUS) findings of renal cell carcinoma (RCC) associated with Xp11.2 translocation/TFE3 gene fusion (Xp11.2/TFE3) in adult patients by comparison with those of clear cell RCC (ccRCC) and papillary RCC (pRCC). METHODS In total, 110 patients (110 renal masses) who underwent CEUS examinations were enrolled in this study. The cases included 18 Xp11.2/TFE3 RCCs, 60 ccRCCs and 32 pRCCs. All masses were confirmed by operative pathology. The CEUS imaging data of these patients were retrospectively analysed by two readers. The conventional US and CEUS features of Xp11.2/TFE3 RCC were compared with those of ccRCC and pRCC. RESULTS The age of the patients with Xp11.2/TFE3 RCC ranged from 20 to 68 years, with a mean age of 38.3 ± 16.3 years and a slight female predominance. The weighted kappa value that interprets the concordance between the interobserver agreement of the US and CEUS features ranged from 0.61 to 0.89. On conventional US and CEUS imaging of Xp11.2/TFE3 RCCs, the tumours were hypoechoic (6/18, 33.3%), isoechoic (8/18, 44.4%), and hyperechoic (4/18, 22.2%). The cystic component was present in 5 cases (27.8%), calcification was present in 9 cases (50.0%), and colour flow signal was present in 7 cases (38.9%). Most cases showed simultaneous wash-in (11/18, 61.1%); the peak enhancement showed hypoenhancement (6/18, 33.3%), isoenhancement (10/18, 55.6%), and hyperenhancement (2/18, 11.1%); most cases exhibited heterogeneous enhancement (12/18, 66.7%) and fast- or simultaneous-out (16/18, 88.9%); and a pseudocapsule was present in 6 cases (33.3%). In the multivariate logistic regression analysis, calcification and lower peak enhancement were more likely to be present in Xp11.2/TFE3 RCC than in ccRCC (P < 0.05), and younger age and relatively high peak enhancement were more likely to be present in Xp11.2/TFE3 RCC than in pRCC (P < 0.05). The calcification combined peak enhancement model differentiated Xp11.2/TFE3 RCC from ccRCC, and the age combined peak enhancement model differentiated Xp11.2/TFE3 RCC from pRCC with an AUC, a sensitivity and a specificity of 0.896, 94.4% and 73.3% and 0.786, 50.0% and 100.0%, respectively. CONCLUSIONS The specific CEUS features combined with demographic information and clinical symptoms may be helpful for differentiating Xp11.2/TFE3 RCC from ccRCC and pRCC.
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Affiliation(s)
- Shuping Wei
- Department of Ultrasound, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, China
| | - Fuli Tian
- Department of Ultrasound, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, Jiangsu, China
| | - Qiuyuan Xia
- Department of Pathology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Pengfei Huang
- Department of Ultrasound, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, Jiangsu, China
| | - Yidan Zhang
- Department of Ultrasound, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, China
| | - Zhichao Xia
- Department of Domestic clinical application, Mindray Bio-Medical Electronics Co. Ltd, Shenzhen, Guangdong, China
| | - Min Wu
- Department of Ultrasound, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, China.
| | - Bin Yang
- Department of Ultrasound, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, Jiangsu, China.
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Chung EM, Lattin GE, Fagen KE, Kim AM, Pavio MA, Fehringer AJ, Conran RM. Renal Tumors of Childhood: Radiologic-Pathologic Correlation Part 2. The 2nd Decade: From the Radiologic Pathology Archives. Radiographics 2017; 37:1538-1558. [PMID: 28898190 DOI: 10.1148/rg.2017160189] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Malignant renal tumors account for 7% of childhood cancers, and Wilms tumors are by far the most common-but not in older children and adolescents. Among individuals in the latter half of their 2nd decade of life, renal cell carcinoma (RCC) is more common than Wilms tumor. The histopathologic spectrum of RCCs in children differs from that in adults. The most common subtype of RCC in children and adolescents is Xp11.2 translocation RCC, which is distinguished by hyperattenuation at nonenhanced computed tomography, a defined capsule, and associated retroperitoneal lymphadenopathy. Papillary RCC is the second most common histologic subtype. It enhances less intensely compared with the adjacent renal parenchyma and has a propensity for calcification. Clear cell RCC is seen in patients with von Hippel-Lindau disease and is distinguished by its relatively hypervascular nature. Medullary carcinoma affects adolescents with the sickle cell trait and is characterized by an infiltrative growth pattern and extensive metastasis at presentation. Angiomyolipoma is seen in children with tuberous sclerosis complex and is often multifocal and hypervascular, with macroscopic fat. Metanephric tumors are central, circumscribed, and typically calcified. Lymphoma usually manifests as multifocal masses, but it may involve a solitary mass or infiltrative pattern. Extensive adenopathy and involvement of the gastrointestinal tract or other organs also may be seen. Primitive neuroectodermal tumor is an aggressive neoplasm that is typically quite large at diagnosis. Knowledge of the clinical, biologic, and histopathologic features of renal tumors in older children and adolescents and their effects on the imaging appearance can help the radiologist offer a useful preoperative differential diagnosis.
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Affiliation(s)
- Ellen M Chung
- From the Department of Radiology and Radiological Sciences, F. Edward Hébert School of Medicine (A.J.F.), Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 (E.M.C., G.E.L.); Pediatric Radiology Section (E.M.C.) and Genitourinary Radiology Section (G.E.L.), American Institute for Radiologic Pathology, Silver Spring, Md; Department of Radiology (K.E.F.) and Office of Graduate Medical Education (A.M.K., M.A.P.), Walter Reed National Military Medical Center, Bethesda, Md; and Department of Pathology, Eastern Virginia Medical School, Norfolk, Va (R.M.C.)
| | - Grant E Lattin
- From the Department of Radiology and Radiological Sciences, F. Edward Hébert School of Medicine (A.J.F.), Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 (E.M.C., G.E.L.); Pediatric Radiology Section (E.M.C.) and Genitourinary Radiology Section (G.E.L.), American Institute for Radiologic Pathology, Silver Spring, Md; Department of Radiology (K.E.F.) and Office of Graduate Medical Education (A.M.K., M.A.P.), Walter Reed National Military Medical Center, Bethesda, Md; and Department of Pathology, Eastern Virginia Medical School, Norfolk, Va (R.M.C.)
| | - Kimberly E Fagen
- From the Department of Radiology and Radiological Sciences, F. Edward Hébert School of Medicine (A.J.F.), Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 (E.M.C., G.E.L.); Pediatric Radiology Section (E.M.C.) and Genitourinary Radiology Section (G.E.L.), American Institute for Radiologic Pathology, Silver Spring, Md; Department of Radiology (K.E.F.) and Office of Graduate Medical Education (A.M.K., M.A.P.), Walter Reed National Military Medical Center, Bethesda, Md; and Department of Pathology, Eastern Virginia Medical School, Norfolk, Va (R.M.C.)
| | - Andrew M Kim
- From the Department of Radiology and Radiological Sciences, F. Edward Hébert School of Medicine (A.J.F.), Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 (E.M.C., G.E.L.); Pediatric Radiology Section (E.M.C.) and Genitourinary Radiology Section (G.E.L.), American Institute for Radiologic Pathology, Silver Spring, Md; Department of Radiology (K.E.F.) and Office of Graduate Medical Education (A.M.K., M.A.P.), Walter Reed National Military Medical Center, Bethesda, Md; and Department of Pathology, Eastern Virginia Medical School, Norfolk, Va (R.M.C.)
| | - Michael A Pavio
- From the Department of Radiology and Radiological Sciences, F. Edward Hébert School of Medicine (A.J.F.), Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 (E.M.C., G.E.L.); Pediatric Radiology Section (E.M.C.) and Genitourinary Radiology Section (G.E.L.), American Institute for Radiologic Pathology, Silver Spring, Md; Department of Radiology (K.E.F.) and Office of Graduate Medical Education (A.M.K., M.A.P.), Walter Reed National Military Medical Center, Bethesda, Md; and Department of Pathology, Eastern Virginia Medical School, Norfolk, Va (R.M.C.)
| | - Adam J Fehringer
- From the Department of Radiology and Radiological Sciences, F. Edward Hébert School of Medicine (A.J.F.), Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 (E.M.C., G.E.L.); Pediatric Radiology Section (E.M.C.) and Genitourinary Radiology Section (G.E.L.), American Institute for Radiologic Pathology, Silver Spring, Md; Department of Radiology (K.E.F.) and Office of Graduate Medical Education (A.M.K., M.A.P.), Walter Reed National Military Medical Center, Bethesda, Md; and Department of Pathology, Eastern Virginia Medical School, Norfolk, Va (R.M.C.)
| | - Richard M Conran
- From the Department of Radiology and Radiological Sciences, F. Edward Hébert School of Medicine (A.J.F.), Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 (E.M.C., G.E.L.); Pediatric Radiology Section (E.M.C.) and Genitourinary Radiology Section (G.E.L.), American Institute for Radiologic Pathology, Silver Spring, Md; Department of Radiology (K.E.F.) and Office of Graduate Medical Education (A.M.K., M.A.P.), Walter Reed National Military Medical Center, Bethesda, Md; and Department of Pathology, Eastern Virginia Medical School, Norfolk, Va (R.M.C.)
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Chen X, Zhu Q, Li B, Cui W, Zhou H, Duan N, Liu Y, Kundra V, Wang Z. Renal cell carcinoma associated with Xp11.2 translocation/TFE gene fusion: imaging findings in 21 patients. Eur Radiol 2016; 27:543-552. [DOI: 10.1007/s00330-016-4421-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 02/29/2016] [Accepted: 05/19/2016] [Indexed: 02/03/2023]
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Ananthakrishnan L, Kapur P, Leyendecker JR. The spectrum of renal cell carcinoma in adults. Abdom Radiol (NY) 2016; 41:1052-65. [PMID: 27108133 DOI: 10.1007/s00261-016-0737-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The spectrum of renal cell carcinoma (RCC) includes many neoplasms with distinct cytogenetics, biologic behaviors, and imaging appearances. The advent of molecular therapies targeting different tumor types, new insights into the relative roles of biopsy and surveillance for small incidental tumors, and a growing array of nephron-sparing interventions have altered management of RCC. Similarly, the role of the radiologist is changing, and it is becoming increasingly important for radiologists to familiarize themselves with the various types of RCC. This article introduces the reader to the common and uncommon recognized types of renal cell carcinoma and discusses how these neoplasms differ in imaging appearance and behavior.
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Arnold CW, Wallace WD, Chen S, Oh A, Abtin F, Genshaft S, Binder S, Aberle D, Enzmann D. RadPath: A Web-based System for Integrating and Correlating Radiology and Pathology Findings During Cancer Diagnosis. Acad Radiol 2016; 23:90-100. [PMID: 26521686 DOI: 10.1016/j.acra.2015.09.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 09/21/2015] [Accepted: 09/27/2015] [Indexed: 10/22/2022]
Abstract
RATIONALE AND OBJECTIVES The current paradigm of cancer diagnosis involves uncoordinated communication of findings from radiology and pathology to downstream physicians. Discordance between these findings can require additional time from downstream users to resolve, or given incorrect resolution, may adversely impact treatment decisions. To mitigate this problem, we developed a web-based system, called RadPath, for correlating and integrating radiology and pathology reporting. MATERIALS AND METHODS RadPath includes interfaces to our institution's clinical information systems, which are used to retrieve reports, images, and test results that are structured into an interactive compendium for a diagnostic patient case. The system includes an editing interface for physicians, allowing for the inclusion of additional clinical data, as well as the ability to retrospectively correlate and contextualize imaging findings following pathology diagnosis. RESULTS During pilot deployment and testing over the course of 1 year, physicians at our institution have completed 60 RadPath cases, requiring an average of 128 seconds from a radiologist and an average of 93 seconds from a pathologist per case. Several technical and workflow challenges were encountered during development, including interfacing with diverse clinical information systems, automatically structuring report contents, and determining the appropriate physicians to create RadPath summaries. Reaction to RadPath has been positive, with users valuing the system's ability to consolidate diagnostic information. CONCLUSIONS With the increasing complexity of medicine and the movement toward team-based disease management, there is a need for improved clinical communication and information exchange. RadPath provides a platform for generating coherent and correlated diagnostic summaries in cancer diagnosis with minimal additional effort from physicians.
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Dynamic Computed Tomographic Features of Adult Renal Cell Carcinoma Associated With Xp11.2 Translocation/TFE3 Gene Fusions: Comparison With Clear Cell Renal Cell Carcinoma. J Comput Assist Tomogr 2015; 39:730-6. [PMID: 25955396 DOI: 10.1097/rct.0000000000000263] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate the dynamic contrast-enhanced computed tomography (CT) characteristics of renal cell carcinoma associated with Xp11.2 translocation and TFE gene fusion (Xp11.2 RCC) by comparison with clear cell renal cell carcinoma (CCRCC). METHODS Dynamic contrast-enhanced CT images and clinical and pathological records of 20 adult patients with Xp11.2 RCC confirmed by TFE3 immunohistochemical and fluorescence in situ hybridization assay were retrospectively analyzed and compared with the findings of 21 contemporary CCRCCs. RESULTS Renal cell carcinoma associated with Xp11.2 translocation and TFE gene fusions often occurred in young (30.6 ± 8.6 years) patients with hematuria (9/20). They presented as well-defined (17/20) cystic-solid (17/20) mass with hemorrhage (8/20) and circular/rim calcifications (6/20). Dynamic contrast-enhanced CT showed heterogeneous moderate prolonged enhancement. A tumor-to-cortex attenuation ratio in corticomedullary phase less than 0.62 gave a sensitivity of 90.0% and a specificity of 92.9% in differentiating Xp11.2 RCC from CCRCC (area under the receiver operating characteristic curve = 0.957, P < 0.001). CONCLUSIONS Computed tomographic characteristics and dynamic contrast-enhanced patterns and index can differentiate Xp11.2 RCC from CCRCC.
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Dynamic Contrast-Enhanced CT Characterization of Xp11.2 Translocation/TFE3 Gene Fusions versus Papillary Renal Cell Carcinomas. BIOMED RESEARCH INTERNATIONAL 2015; 2015:298679. [PMID: 26636097 PMCID: PMC4655261 DOI: 10.1155/2015/298679] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/15/2015] [Accepted: 10/20/2015] [Indexed: 01/01/2023]
Abstract
PURPOSE To compare the differences of CT characteristics between renal cell carcinomas (RCCs) associated with Xp11.2 translocation/TFE3 gene fusions (Xp11.2 RCCs) and papillary cell renal cell carcinomas (PRCCs). METHODS CT images and clinical records of 64 patients (25 Xp11.2 RCCs, 15 type 1 and 24 type 2 PRCCs) were analyzed and compared retrospectively. RESULTS Xp11.2 RCC more frequently affected young (30.7 ± 8.7 years) women (16/25, 64%) with gross hematuria (12/25, 48%), while PRCC more frequently involved middle-aged (54.8 ± 11.1 years) men (28/39, 71.8%) asymptomatically. Xp11.2 RCC tended to be heterogeneous density with some showing circular calcification. Lesion sizes of Xp11.2 RCC (5.4 ± 2.2 cm) and type 2 PRCC (5.7 ± 2.5 cm) were significantly larger than that of type 1 PRCC (3.8 ± 1.8 cm). Xp11.2 RCC contained more cystic components (22/25, 88%) than type 1 PRCC (all solid) and type 2 PRCC (9/24, 36.0%). Type 1 PRCC (13/15, 86.7%) and Xp11.2 RCC (21/25, 84.0%) showed more clear boundary than type 2 PRCC (12/24, 50.0%). CONCLUSION CT features including diameter, boundary, attenuation, nature, and circular calcification of the tumor, combined with demographic information and symptoms, may be useful to differentiate Xp11.2 RCC from different subtypes of PRCC.
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Liang W, Xu S. Xp11.2 translocation renal cell carcinoma with egg-shell calcification mimicking a benign renal tumour: A case report. Oncol Lett 2015; 10:3191-3194. [PMID: 26722310 DOI: 10.3892/ol.2015.3718] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 08/20/2015] [Indexed: 01/12/2023] Open
Abstract
The present study reports the case of a 20-year-old female who was identified to have a left renal angiomyolipoma (AML) with hemorrhage. Following temporary conservative observation, the patient received continuous ultrasonic follow-up. Due to the rapid growth of the lesion, further examinations were performed. Computed tomography (CT) plain scans revealed a partly high-density mass with marginal egg-shell calcification. Enhanced CT revealed a solid tumor with a rich blood supply. Since no fats were detected, the possibility of a typical AML was excluded, but the diagnoses of epithelioid AML or renal cancer were considered. Finally, the left kidney was partially excised laparoscopically. The intraoperative frozen section indicated a diagnosis of renal cell carcinoma (RCC). The left kidney was subsequently radically excised. Routine histopathological and immunohistochemical tests confirmed that the lesion was an RCC with an Xp11.2 translocation. The present study introduces the pitfalls in the diagnosis of Xp11.2 translocation RCC, which is a rare RCC subtype accompanied with uncommon imaging manifestations. The study suggests that when a rapidly-growing AML is detected by ultrasound, renal cancer with marginal calcification should be considered. Moreover, although egg-shell calcification mostly occurs in benign renal lesions, further examinations, such as enhanced CT, are recommended for identifying the nature of the masses and excluding the possibility of malignant tumors.
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Affiliation(s)
- Wenjie Liang
- Department of Radiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Shunliang Xu
- Department of Radiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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Muglia VF, Prando A. Renal cell carcinoma: histological classification and correlation with imaging findings. Radiol Bras 2015; 48:166-74. [PMID: 26185343 PMCID: PMC4492569 DOI: 10.1590/0100-3984.2013.1927] [Citation(s) in RCA: 248] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 04/10/2014] [Indexed: 12/24/2022] Open
Abstract
Renal cell carcinoma (RCC) is the seventh most common histological type of cancer in
the Western world and has shown a sustained increase in its prevalence. The
histological classification of RCCs is of utmost importance, considering the
significant prognostic and therapeutic implications of its histological subtypes.
Imaging methods play an outstanding role in the diagnosis, staging and follow-up of
RCC. Clear cell, papillary and chromophobe are the most common histological subtypes
of RCC, and their preoperative radiological characterization, either followed or not
by confirmatory percutaneous biopsy, may be particularly useful in cases of poor
surgical condition, metastatic disease, central mass in a solitary kidney, and in
patients eligible for molecular targeted therapy. New strategies recently developed
for treating renal cancer, such as cryo and radiofrequency ablation, molecularly
targeted therapy and active surveillance also require appropriate preoperative
characterization of renal masses. Less common histological types, although sharing
nonspecific imaging features, may be suspected on the basis of clinical and
epidemiological data. The present study is aimed at reviewing the main clinical and
imaging findings of histological RCC subtypes.
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Affiliation(s)
- Valdair F Muglia
- Postdoctoral Scholar, Associate Professor at Centro de Ciências das Imagens e Física Médica (CCIFM) - Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil
| | - Adilson Prando
- Guest Professor at Universidade Estadual de Campinas (Unicamp), Head of Department of Imaginology at Hospital Vera Cruz, Campinas, SP, Brazil
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Imaging-histologic discordance at percutaneous biopsy of the lung. Acad Radiol 2015; 22:481-7. [PMID: 25601302 DOI: 10.1016/j.acra.2014.11.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 11/13/2014] [Accepted: 11/25/2014] [Indexed: 12/30/2022]
Abstract
RATIONALE AND OBJECTIVES The purpose of this study was to quantify the degree of imaging-histologic discordance in a cohort of patients undergoing computed tomography (CT)-guided lung biopsy for focal lung disease. MATERIALS AND METHODS A retrospective review was performed of 186 patients who underwent percutaneous lung biopsy of a parenchymal lesion at our institution between January and December 2009. Diagnostic radiology reports of CT or positron emission tomography-CTs performed before biopsy were used to classify the lesion as malignant or benign by five readers. Pathology reports of the biopsied lesions were classified by three readers. Inter-reader agreement and imaging-histologic concordance were quantified using kappa statistics. Discordant benign cases were then revisited to determine downstream effects. RESULTS Inter-reader agreement on report content was substantial or almost perfect with kappas >0.783. Kappas for concordance were as follows: malignant (0.448), primary lung cancer (0.517), metastatic disease to lung (0.449), benign (0.510), and overall agreement (0.381). Of the twelve discordant benign cases that were revisited, four were found to be false negatives, resulting in a delay in diagnosis. CONCLUSIONS Our study of imaging-histologic discordance in percutaneous biopsy of lung lesions supports the need for imaging report standardization and improved integration and communication between the fields of radiology and pathology.
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MDCT Findings of Renal Cell Carcinoma Associated With Xp11.2 Translocation and TFE3 Gene Fusion and Papillary Renal Cell Carcinoma. AJR Am J Roentgenol 2015; 204:542-9. [DOI: 10.2214/ajr.14.12950] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Magnetic resonance imaging and computed tomography characteristics of renal cell carcinoma associated with Xp11.2 translocation/TFE3 gene fusion. PLoS One 2014; 9:e99990. [PMID: 24926688 PMCID: PMC4057389 DOI: 10.1371/journal.pone.0099990] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 05/20/2014] [Indexed: 11/19/2022] Open
Abstract
PURPOSE To characterize Xp11.2 translocation renal cell carcinoma (RCC) using magnetic resonance imaging (MRI) and computed tomography (CT). METHODS This study retrospectively collected the MRI and CT data of twelve patients with Xp11.2 translocation RCC confirmed by pathology. Nine cases underwent dynamic contrast-enhanced MRI (DCE-MRI) and 6 cases underwent CT, of which 3 cases underwent MRI and CT simultaneously. The MRI and CT findings were analyzed in regard to tumor position, size, hemorrhagic, cystic or necrotic components, calcification, tumor density, signal intensity and enhancement features. RESULTS The age of the 12 patients ranged from 13 to 46 years (mean age: 23 years). T2WI revealed heterogeneous intensity, hyper-intensity, and slight hypo-intensity in 6 cases, 2 cases, and 1 case, respectively. On DCE-MR images, mild, moderate, and marked rim enhancement of the tumor in the corticomedullary phase (CMP) were observed in 1, 6, and 2 cases, respectively. The tumor parenchyma showed iso-attenuation (n = 4) or slight hyper-attenuation (n = 1) compared to the normal renal cortex on non-contrast CT images. Imaging findings were suggestive of hemorrhage (n = 4) or necrosis (n = 8) in the tumors, and there was evidence of calcification in 8 cases by CT (n = 3) and pathology (n = 8). On dynamic contrast-enhanced CT images, 3 cases and 1 case manifested moderate and strong CMP enhancement, respectively. Nine tumors by MRI and 4 tumors by CT showed prolonged enhancement. Three neoplasms presented at stage I, 2 at stage II, 3 at stage III, and 4 at stage IV according the 2010 AJCC staging criteria. CONCLUSIONS XP11.2 translocation RCC should be considered when a child or young adult patient presents with a renal tumor with heterogeneous features such as hemorrhage, necrosis, cystic changes, and calcification on CT and MRI and/or is accompanied by metastatic evidence.
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Hora M, Urge T, Trávníček I, Ferda J, Chudáček Z, Vaněček T, Michal M, Petersson F, Kuroda N, Hes O. MiT translocation renal cell carcinomas: two subgroups of tumours with translocations involving 6p21 [t (6; 11)] and Xp11.2 [t (X;1 or X or 17)]. SPRINGERPLUS 2014; 3:245. [PMID: 24877033 PMCID: PMC4032393 DOI: 10.1186/2193-1801-3-245] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 04/30/2014] [Indexed: 02/03/2023]
Abstract
INTRODUCTION MiT translocation renal cell carcinomas (TRCC) predominantly occur in younger patients with only 25% of patients being over 40 years. TRCC contains two main subgroups with translocations involving 6p21 or Xp11.2. Herein we present 10 cases. MATERIALS Eight cases were treated at main author's institution (identified among 1653 (0.48%) cases of kidney tumours in adults). Two cases were retrieved from the Pilsen (CZ) Tumour Registry. RESULTS Six cases were type Xp11.2 and four 6p21; 7 female, 3 male patients; Xp11.2 4:2, 6p21 3:1. The mean age 49 years (range: 21-80), 5 patients (50%) over 40 years. The mean age of the group with Xp11.2 TRCCs was 55 (median 51) and 6p21 41 (32) years. One female with a 6p21 tumour (24 years) underwent nephrectomy at 4 months of pregnancy. Stage (UICC, 7th ed. 2009) was 5xI, 3xIII, 2xIV. The mean size of tumour was 80 (40-165) mm. The mean follow-up was 33.2 (1-92) months. In patients with 6p21 tumours, one (25%) died after 3 months due to widely metastatic disease. In patients with Xp11.2 tumours, 3 (50%) succumbed due to metastatic disease (range 1-8 months). Three patients with Xp11.2 are alive at 7, 52 and 92 months of follow-up, were diagnosed at early stage (T1a). CONCLUSION TRCCs were more common in females. Patient with 6p21 tumours were younger than those with Xp11.2. Both types have definitive malignant potential Type Xp11.2 seems to be a more aggressive neoplasm than 6p21. The case with metastatic 6p21 tumour is the 4th case described in the English literature.
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Affiliation(s)
- Milan Hora
- Department of Urology Faculty Hospital, E. Beneše 13, Pilsen, 305 99 Czech Republic ; Faculty of Medicine in Pilsen, Charles University in Prague, Prague, Czech Republic
| | - Tomáš Urge
- Department of Urology Faculty Hospital, E. Beneše 13, Pilsen, 305 99 Czech Republic ; Faculty of Medicine in Pilsen, Charles University in Prague, Prague, Czech Republic
| | - Ivan Trávníček
- Department of Urology Faculty Hospital, E. Beneše 13, Pilsen, 305 99 Czech Republic ; Faculty of Medicine in Pilsen, Charles University in Prague, Prague, Czech Republic
| | - Jiří Ferda
- Department of Radiology, Pilsen, Czech Republic ; Faculty of Medicine in Pilsen, Charles University in Prague, Prague, Czech Republic
| | | | - Tomáš Vaněček
- Department of Pathology, Faculty Hospital in Pilsen, Pilsen, Czech Republic
| | - Michal Michal
- Department of Pathology, Faculty Hospital in Pilsen, Pilsen, Czech Republic ; Faculty of Medicine in Pilsen, Charles University in Prague, Prague, Czech Republic
| | - Fredrik Petersson
- Department of Pathology, National University Health System, Singapore, Singapore
| | - Naoto Kuroda
- Department of Diagnostic Pathology, Kochi Red Cross Hospital, Kochi, Japan
| | - Ondřej Hes
- Department of Pathology, Faculty Hospital in Pilsen, Pilsen, Czech Republic ; Faculty of Medicine in Pilsen, Charles University in Prague, Prague, Czech Republic
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Su HH, Sung MT, Chiang PH, Cheng YT, Chen YT. The preliminary experiences of translocation renal cell carcinoma and literature review. Kaohsiung J Med Sci 2014; 30:402-8. [PMID: 25002378 DOI: 10.1016/j.kjms.2014.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 12/13/2013] [Accepted: 01/07/2014] [Indexed: 11/24/2022] Open
Abstract
Xp11.2 translocation renal cell carcinoma (RCC) is rare and predominantly found in children and young adults. Because of the property of overexpressed transcription factor E3 (TFE3) fusion protein, immunohistochemical (IHC) staining with TFE3 antibody makes an excellent diagnostic tool. This study analyzed preliminary experiences of eight Xp11.2 translocation RCCs in our institution between 2007 and 2012. In four males and four females with a mean age of 28.4 years. Xp11.2 translocation RCCs were diagnosed. TFE3 IHC stain was positive in all tumor specimens. As the initial presentation, four patients suffered from abdominal pain, three cases had gross hematuria, and one case had hemoptysis caused by existing lung metastasis. The tumor was located in the right kidney (75%) with mean diameter of 5.85 ± 2.64 cm. Three cases (38%, 3/8) presented with lymph node metastasis at the time of diagnosis. In five cases (63%, 5/8), the initial diagnosis was Stage III and IV. Treatment included open surgery (one partial nephrectomy and five radical nephrectomies), cryoablation, immunotherapy, and target therapy. The mean follow-up time was 32 months. One patient died after 23.4 months of follow-up. The application of TFE3 IHC stain will improve the diagnostic accuracy for detecting XP11.2 translocation renal cell carcinoma. Surgery or cryoablation both had excellent prognosis in early stages. Although the disease is believed to be indolent, an increasingly aggressive clinical course should be kept in mind, especially for children and young adults.
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Affiliation(s)
- Hsin-Hao Su
- Department of Urology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ming-Tse Sung
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Po-Hui Chiang
- Department of Urology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
| | - Yunan-Tso Cheng
- Department of Urology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yen-Ta Chen
- Department of Urology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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