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renal mass, CT

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https://www.readbyqxmd.com/read/28801336/isolated-clival-metastasis-a-rare-presentation-of-renal-cell-carcinoma
#1
Anil Mani, Priyank Yadav, Vimal Kumar Paliwal, Hira Lal
Renal cell carcinoma accounts for 3% of all adult malignancies. Usual sites of metastasis are lymph nodes, lungs, bone, liver and brain. We describe a patient who presented with complaints of holocranial headache and diplopia. MRI of the head showed a clival-based lesion with associated bony erosion. With suspicion of a metastatic lesion, an ultrasonogram of the abdomen was done which showed a left renal mass that enhanced on contrast-enhanced CT. There were no other metastatic foci. Patient underwent radiotherapy for the clival lesion...
August 11, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28799884/differences-in-renal-tumor-size-measurements-for-computed-tomography-versus-magnetic-resonance-imaging-implications-for-patients-on-active-surveillance
#2
Irtaza Khan, Alp Tuna Beksac, David J Paulucci, Ronney Abaza, Daniel D Eun, Akshay Bhandari, Ketan K Badani
PURPOSE: To evaluate and compare the accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) in predicting the final pathologic tumor size of partial nephrectomy specimens. MATERIALS AND METHODS: We analyzed a multi-institutional database of 807 patients who underwent robotic partial nephrectomy for a cT1a renal mass from 2006 to 2016. Patients who had a solitary tumor with complete data on the baseline imaging modality and the tumor size (baseline and pathologic) (n = 349) were included for analysis...
August 11, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28799639/paraganglioma-of-the-renal-pelvis-a-case-report-and-review-of-literature
#3
Cheng Yi, Lin Han, Rui Yang, Junfeng Yu
PURPOSE: Paraganglioma, a kind of pheochromocytoma originating from embryonic neural crest, is a rare neuroendocrine neoplasm commonly located at extra-adrenal areas such as head, neck, and abdomen. There are a few reports on renal paragangliomas; fewer than 5 reported cases are renal pelvic paragangliomas, including our case. METHODS: Our patient, who had not experienced headache, hypertension, or palpitation, was founded to have a fixed mass in the left renal pelvis incidentally...
August 7, 2017: Tumori
https://www.readbyqxmd.com/read/28797586/obesity-as-defined-by-waist-circumference-but-not-body-mass-index-is-associated-with-higher-renal-mass-complexity
#4
Laura A Bertrand, Lewis J Thomas, Peng Li, Claire M Buchta, Shannon K Boi, Rachael M Orlandella, James A Brown, Kenneth G Nepple, Lyse A Norian
OBJECTIVES: Obesity, typically defined as a body mass index (BMI)≥30kg/m(2), is an established risk factor for renal cell carcinoma (RCC) but is paradoxically linked to less advanced disease at diagnosis and improved outcomes. However, BMI has inherent flaws, and alternate obesity-defining metrics that emphasize abdominal fat are available. We investigated 3 obesity-defining metrics, to better examine the associations of abdominal fat vs. generalized obesity with renal tumor stage, grade, or R...
August 7, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28794588/renal-cell-carcinomas-mass-of-4-cm-are-not-always-indolent
#5
Nessn H Azawi, Lars Lund, Mikkel Fode
CONTEXT: The rate of progression to metastatic disease in patients undergoing active surveillance for small renal tumors varies in the literature between 1% and 8%. AIMS: This study aims to examine the incidence of metastasis in small renal tumors of <4 cm in a Danish cohort. SETTINGS AND DESIGN: Retrospective. MATERIALS AND METHODS: Data on 106 patients who were diagnosed with renal cancer (RCC) of <4 cm by CT scan from January 2005 to December 2013 were collected retrospectively in January 2016 from patient charts and analyzed...
July 2017: Urology Annals
https://www.readbyqxmd.com/read/28777164/mr-imaging-of-mediastinal-masses
#6
Brett W Carter, Sonia L Betancourt, Marcelo F Benveniste
The mediastinum contains vital vascular and nonvascular structures and organs, and a wide variety of abnormalities may arise from this region of the thorax. Although mediastinal masses may be initially detected on chest radiography, cross-sectional imaging plays an important role in the identification and evaluation of mediastinal lesions, enabling the formulation of focused differential diagnoses and ultimately guiding management. Computed tomography (CT) is considered the imaging modality of choice for evaluating most mediastinal masses; however, the role of magnetic resonance (MR) imaging continues to expand, as it is superior to CT in differentiating between cystic and solid masses, identifying cystic and solid components within complex lesions, and distinguishing thymic hyperplasia and normal thymus from thymic epithelial neoplasms and other neoplasms...
August 2017: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/28764242/page-kidney-in-wunderlich-syndrome-causing-acute-renal-failure-and-urosepsis-successful-timely-minimally-invasive-management-of-a-devastating-clinical-entity
#7
Sundaramoorthy Vijayganapathy, Vilvapathy Senguttuvan Karthikeyan, Ashwin Mallya, Jayaram Sreenivas
Wunderlich Syndrome (WS) is an uncommon condition where acute onset of spontaneous bleeding occurs into the subcapsular and perirenal spaces. It can prove fatal if not recognized and treated aggressively at the appropriate time. A 32-year-old male diagnosed elsewhere as acute renal failure presented with tender left loin mass, fever and hypovolemic shock with serum creatinine 8.4 mg/dl. He was started on higher antibiotics and initiated on haemodialysis. Ultrasonogram (USG), Non-Contrast Computed Tomography (NCCT) and Magnetic Resonance Imaging (MRI) showed bilateral perirenal subcapsular haematomas - right 3...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28762684/-the-retroperitoneal-space
#8
Andrea Mancini, Mario Meola, Giuseppe Tarantino, Ilaria Petrucci, Giovanna Berardi, Cristoforo Cuzzola
We describe the case of a 45-year-old woman with a clinical history of breast cancer presenting with anuric renal failure, metabolic acidosis and bilateral grade 2-3 hydronephrosis. Following insertion of bilateral ureteral stents, urinary output was 5000 ml in the subsequent 24 hours with frankly bloody urine, after which anuria recurred. A new ultrasound examination showed hydronephrotic kidneys with properly positioned stents, a distended bladder free of clots and a hypo-anechoic, well-demarcated mass enveloping the aorta...
August 1, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28756359/post-transplant-lymphoproliferative-disorder-and-management-of-residual-mass-post-chemotherapy-case-report
#9
Troy D Schultz, Nubia Zepeda, Ronald B Moore
INTRODUCTION: Post-transplant lymphoproliferative disorder (PTLD) is a rare complication. It represents a spectrum of lymphoid proliferations which occur in the setting of immunosuppression and organ transplantation. There are no reported cases or recommendations for the treatment of residual masses post rituximab of PTLD. PRESENTATION OF CASE: A patient with a long standing history of immunosuppression due to multiple kidney transplants starting in 1979, presented with a very large palpable hard abdominal mass (2004) after a fourth renal transplant...
July 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28753814/functional-comparison-of-renal-tumor-enucleation-versus-standard-partial-nephrectomy
#10
Wen Dong, Gopal N Gupta, Robert H Blackwell, Jitao Wu, Chalairat Suk-Ouichai, Arpeet Shah, Sarah E Capodice, Marcus L Quek, Elvis Caraballo Antonio, Diego Aguilar Palacios, Erick M Remer, Jianbo Li, Joseph Zabell, Sudhir Isharwal, Steven C Campbell
BACKGROUND: Tumor enucleation (TE) optimizes parenchymal preservation and could yield better function than standard partial nephrectomy (SPN), although data on this are conflicting. OBJECTIVE: To compare functional outcomes for TE and SPN strategies. DESIGN, SETTING, AND PARTICIPANTS: Patients managed with partial nephrectomy (PN) with necessary data for analysis of preservation of ipsilateral parenchymal mass (IPM) and global glomerular filtration rate (GFR) from two centers were included...
June 16, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28705554/atrial-function-atrial-volume-and-cardiovascular-clinical-outcomes-in-patients-with-end-stage-renal-disease-a-study-of-cardiac-computed-tomography
#11
Laust Dupont, Simon Winther, Hanne Skou Jørgensen, Peter Bomholt, Hans Erik Bøtker, Morten Bøttcher, Per Ivarsen, My Svensson
BACKGROUND: Patients with chronic kidney disease (CKD) have an increased risk of cardiovascular events. Previous studies using 2-dimensional echocardiography show that left atrial end-diastolic volume (LAEDV) predicts cardiovascular outcomes and mortality in patients with CKD. However, contrast-enhanced cardiac CT may offers a more precise measure of atrial dimensions and function than 2-dimensional echocardiography and may provide improved predictionof patient outcome. AIM: The aim of the present study was to examine the association of LAEDV and left atrial ejection fraction (LAEF) assessed by CT with left ventricle end-diastolic volume (LVEDV), left ventricular mass, left ventricular ejection fraction and N-terminal plasma-pro-brain natriuretic peptide (NT-PRO-BNP)...
July 4, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28705069/characterization-of-incidental-renal-mass-with-dual-energy-ct-diagnostic-accuracy-of-effective-atomic-number-maps-for-discriminating-nonenhancing-cysts-from-enhancing-masses
#12
Achille Mileto, Brian C Allen, Jason A Pietryga, Alfredo E Farjat, Jessica G Zarzour, Davide Bellini, Lukas Ebner, Desiree E Morgan
OBJECTIVE: The purpose of this study was to assess the diagnostic accuracy of effective atomic number maps reconstructed from dual-energy contrast-enhanced data for discriminating between nonenhancing renal cysts and enhancing masses. MATERIALS AND METHODS: Two hundred six patients (128 men, 78 women; mean age, 64 years) underwent a CT renal mass protocol (single-energy unenhanced and dual-energy contrast-enhanced nephrographic imaging) at two different hospitals...
July 13, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28702269/marker-negative-pheochromocytoma-associated-with-inferior-vena-cava-thrombosis
#13
S Poudyal, M Pradhan, S Chapagain, B R Luitel, P R Chalise, U K Sharma, P R Gyawali
Pheochromocytoma associated with inferior vena cava (IVC) thrombosis is very rare. A 27-year-old female presented with right flank pain and hypertensive urgency. Contrast-enhanced CT abdomen and gadolinium-contrast MRI abdomen revealed right adrenal mass suspicious of malignancy with invasion and compression to the right IVC wall along with IVC thrombus extending from the level of renal veins to the level of confluence with hepatic veins. Her routine laboratory investigations including 24-hour urine fractionated metanephrines, vanillylmandelic acid, and cortisol were normal...
2017: Case Reports in Urology
https://www.readbyqxmd.com/read/28694416/-a-case-of-epithelioid-angiomyolipoma-of-the-kidney-with-tumor-thrombus-extending-into-the-renal-vein-case-report
#14
Takuya Ito, Masahiro Shiba, Yosuke Sekii, Ken Takeda, Satoru Munakata, Hitoshi Takayama
A 31-year-old man was referred to our hospital for macroscopic hematuria. An abdominal computed tomography (CT) scan showed a 36×30 mm enhancing left renal tumor with tumor thrombus extending into the left renal vein. Therefore,we diagnosed the tumor as a clinically classified cT3aN0M0 left renal cell carcinoma. Retroperitoneal laparoscopic radical left nephrectomy with renal vein thrombectomy was performed,with removal of the left kidney with the mass and tumor thrombus en bloc. The pathological diagnosis was epithelioid angiomyolipoma (EAML) of the left kidney...
June 2017: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/28690522/small-cell-cancer-of-the-genitourinary-tract-a-case-report-and-review-of-the-literature
#15
Ho Man Yeung, Chetan Jeurkar, Tiffany Pompa, Michael Styler
Small cell carcinoma of the urinary tract is an extremely rare disease with very few cases reported in the literature. Its clinical course is aggressive, and the prognosis is poor. Here, we present a case of metastatic extrapulmonary small cell carcinoma of the upper urinary tract in a 74-year-old African-American male. He initially presented with gross hematuria, 20-pound weight loss, and abdominal pain for 2 months. CT imaging showed a 14.0 × 7.0 × 16.0 cm retroperitoneal mass within the left renal fossa; biopsy revealed a carcinoma which was positive for synaptophysin and chromogranin...
May 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28683358/distinctive-inflammatory-profile-between-acute-focal-bacterial-nephritis-and-acute-pyelonephritis-in-children
#16
Makoto Mizutani, Shunji Hasegawa, Takeshi Matsushige, Naoki Ohta, Setsuaki Kittaka, Madoka Hoshide, Takeshi Kusuda, Kazumasa Takahashi, Kiyoshi Ichihara, Shouichi Ohga
BACKGROUND: Acute focal bacterial nephritis (AFBN) is a severe form of upper urinary tract infection (UTI) with neurological manifestations and focal renal mass lesions on computed tomography (CT). Prolonged antibiotic therapy may improve the renal outcome, but the early differential diagnosis of AFBN from acute pyelonephritis (APN) is challenging. We searched for effective biomarkers of AFBN based on the pathophysiology of upper UTIs. METHODS: Of 52 upper UTI cases treated at Yamaguchi University between 2009 and 2016, 38 pediatric patients with AFBN (n=17) or APN (n=21) who underwent ultrasonography and/or CT were enrolled...
July 3, 2017: Cytokine
https://www.readbyqxmd.com/read/28678574/active-surveillance-of-nonfatty-renal-masses-in-patients-with-lymphangioleiomyomatosis-use-of-ct-features-and-patterns-of-growth-to-differentiate-angiomyolipoma-from-renal-cancer
#17
Nilo A Avila, Andrew J Dwyer, Joel Moss
OBJECTIVE: The objective of this study was to report our experience with active surveillance of nonfatty renal masses in a large cohort of patients with lymphangioleiomyomatosis (LAM), correlate their CT features and patterns of growth with histopathology results, and provide guidelines for management. SUBJECTS AND METHODS: Yearly CT examinations were performed of 367 women (age range, 21-75 years; mean age, 47 years). For the 31 patients with 37 nonfatty renal masses that were biopsied, excised, or followed for ≥ 5 years, CT enhancement characteristics and patterns of growth were compared with the histopathology results...
July 5, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28678573/is-ultrasound-useful-for-further-evaluation-of-homogeneously-hyperattenuating-renal-lesions-detected-on-ct
#18
Mahadevaswamy Siddaiah, Satheesh Krishna, Matthew D F McInnes, Jeffrey S Quon, Wael M Shabana, Demetri Papadatos, Nicola Schieda
OBJECTIVE: The purpose of this study was to evaluate the ability of ultrasound (US) to characterize hyperattenuating cysts detected as indeterminate hyperattenuating renal lesions on unenhanced and single phase enhanced CT. MATERIALS AND METHODS: A total of 107 consecutive homogeneously hyperattenuating renal lesions underwent gray-scale and Doppler US at our institution between 2010 and 2013. Two radiologists who were unaware of the final diagnosis retrospectively evaluated US images for visibility and diagnosis (simple cyst, intermediate complexity cyst, cystic or solid mass showing internal flow on Doppler US, or indeterminate)...
July 5, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28678572/percutaneous-image-guided-thermal-ablation-for-multifocal-renal-cell-carcinoma-10-year-experience-at-a-single-center
#19
Wenhui Zhou, Raul N Uppot, Adam S Feldman, Ronald S Arellano
OBJECTIVE: The objective of our study was to assess the technical success, safety, and oncologic and renal function outcomes of CT-guided percutaneous thermal ablation for synchronous multiple renal masses in a single session. MATERIALS AND METHODS: A retrospective analysis of 23 patients (16 men and 7 women; median age, 70 years) with biopsy-proven multifocal renal cell carcinoma (RCC) masses treated with radiofrequency ablation (RFA), cryoablation, or microwave ablation (MWA) was performed...
July 5, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28677004/morphologic-analysis-with-computed-tomography-may-help-differentiate-fat-poor-angiomyolipoma-from-renal-cell-carcinoma-a-retrospective-study-with-602-patients
#20
Yong Hee Kim, Kyunghwa Han, Young Taik Oh, Dae Chul Jung, Nam Hoon Cho, Sung Yoon Park
PURPOSE: To assess whether morphologic analysis using computed tomography (CT) could differentiate between fat-poor angiomyolipoma (fpAML) and renal cell carcinoma (RCC). METHODS: A total of 602 patients with a histologically confirmed fpAML (n = 49) or RCC (n = 553) were evaluated. All renal lesions were less than 4 cm in size and had no gross fat on contrast-enhanced CT. For morphologic analysis, overflowing beer sign and angular interface were evaluated...
July 4, 2017: Abdominal Radiology
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