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renal mass, CT

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
https://www.readbyqxmd.com/read/28673886/newly-diagnosed-sellar-tumors-in-cancer-patients-a-diagnostic-challenge-and-management-dilemma
#11
Carlos R Goulart, Smita Upadhyay, Leo F S Ditzel Filho, Andre Beer-Furlan, Ricardo L Carrau, Luciano M Prevedello, Daniel M Prevedello
OBJECTIVE: The use of PET CT for staging in cancer patients and the widespread use of MRI led to an increased incidence of incidental sellar mass detection. The imaging findings can be suggestive of a benign pituitary tumor but metastasis can never be completely ruled out with non-invasive work-up. Appropriate diagnosis of these sellar masses is critical as the treatment paradigm might change in the presence of a pituitary metastasis. Moreover, definitive tissue diagnosis might prevent unnecessary radiotherapy to the skull base or even the need for systemic treatment when benign pituitary disease is confirmed...
June 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28673603/abdominal-applications-of-a-novel-detector-based-spectral-ct
#12
REVIEW
Nicholas Fulton, Prabhakar Rajiah
Detector-based spectral computed tomography (SDCT) is a recently introduced technology that uses a single x-ray tube and 2 layers of detectors to simultaneously collect low- and high-energy data. In this article, we provide an overview of this novel SDCT technology in abdominal imaging. Several applications of SDCT in abdominal imaging are discussed and illustrated, along with a brief description of current literature on the status of dual-energy computed tomography in these applications. This includes urinary calculus composition, characterization of masses (renal, adrenal, hepatic, and others), tumor perfusion, improving vascular contrast, improving lesion conspicuity, decreasing artifacts, and reducing radiation dose...
May 17, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28651987/management-of-the-incidental-renal-mass%C3%A2-on-ct-a-white-paper-of-the-acr%C3%A2-incidental-findings-committee
#13
Brian R Herts, Stuart G Silverman, Nicole M Hindman, Robert G Uzzo, Robert P Hartman, Gary M Israel, Deborah A Baumgarten, Lincoln L Berland, Pari V Pandharipande
The ACR Incidental Findings Committee (IFC) presents recommendations for renal masses that are incidentally detected on CT. These recommendations represent an update from the renal component of the JACR 2010 white paper on managing incidental findings in the adrenal glands, kidneys, liver, and pancreas. The Renal Subcommittee, consisting of six abdominal radiologists and one urologist, developed this algorithm. The recommendations draw from published evidence and expert opinion and were finalized by informal iterative consensus...
June 22, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28611143/retroperitoneal-haemangiopericytoma
#14
Mustafa Resorlu, Canan Akgun Toprak, Muhsin Ozgun Ozturk, Muhammet Arslan
A 55-year-old woman, diagnosed with a renal mass by abdominal ultrasonography (USG) in an external medical centre, presented to our hospital. The medical history was unremarkable except for diabetes mellitus and hypertension. The haemogram and urine tests were normal. The only pathology revealed in routine biochemistry tests was increased glucose level (164 mg/dL). The repeat USG performed in our hospital revealed a solid hypoechoic mass lesion approximately 4 cm in diameter closely adjacent to the right kidney...
June 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28604513/severe-sarcopenia-and-increased-fat-stores-in-pediatric-patients-with-liver-kidney-or-intestine-failure
#15
Richard S Mangus, Weston J Bush, Chandrashekhar A Kubal, Christina Miller
OBJECTIVES: Malnutrition and wasting predict clinical outcomes in children with severe chronic illness. Objectively calculated malnutrition in children with end-stage organ failure has not been well studied. This analysis compares children with kidney, liver or intestine failure to healthy controls to quantitate the disparity in muscle and fat stores. METHODS: Children younger than age 19 with end stage liver, kidney or intestine failure and with pre-transplant computed tomography (CT) imaging were selected from the transplant database...
June 9, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28601782/neuropraxia-following-resection-of-a-retroperitoneal-liposarcoma
#16
Stevenson Tsiao, Nail Aydin, Subhasis Misra
BACKGROUND: This is a unique case of neuropraxia of femoral nerve seen after resection of retroperitoneal liposarcoma which has not been reported before in the literature. INTRODUCTION: Neuropraxia, a transient paralysis due to blockage of nerve conduction, commonly associated with athletes and orthopedic procedures, has not been previously reported as a complication following resection of retroperitoneal sarcoma. CASE: This is an 81-year-old female who, on CT for evaluation of her atherosclerosis, was found to have an incidental right-sided retroperitoneal mass extending from the right renal capsule inferiorly through the inguinal canal...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28592361/ct-imaging-of-solid-renal-masses-pitfalls-and-solutions
#17
REVIEW
S Krishna, C A Murray, M D McInnes, R Chatelain, M Siddaiah, O Al-Dandan, S Narayanasamy, N Schieda
Computed tomography (CT) remains the first-line imaging test for the characterisation of renal masses; however, CT has inherent limitations, which if unrecognised, may result in errors. The purpose of this manuscript is to present 10 pitfalls in the CT evaluation of solid renal masses. Thin section non-contrast enhanced CT (NECT) is required to confirm the presence of macroscopic fat and diagnosis of angiomyolipoma (AML). Renal cell carcinoma (RCC) can mimic renal cysts at NECT when measuring <20 HU, but are usually heterogeneous with irregular margins...
June 4, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28592028/-analysis-of-12-cases-of-exogenous-lipoid-pneumonia-confirmed-by-pathology
#18
Y X Wang, F Fang, Y F Guo, Y M Li, T Y Sun, M Zhang, J Chen, B M Fang
Objective: To study the etiological, clinical, radiological, diagnostic, therapeutic, and prognostic manifestations of exogenous lipoid pneumonia (ELP), and therefore to improve the diagnosis and treatment of this disease. Methods: The clinical data of 12 cases of ELP confirmed by pathology were retrospectively analyzed. Results: The patients consisted of 9 males and 3 females, with an average age of 73.8 years (range, 44 to 100 years). The underlying diseases were variable, including diseases affecting the general condition (multiple organ failure, chronic heart and renal insufficiency, pemphigoid, etc) and conditions with increased risk of aspiration (sequelae of cerebrovascular disease, Alzheimer's disease, advanced stage of nasopharyngeal carcinoma, paralytic ileus, etc)...
June 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28583563/impact-of-the-ratio-of-visceral-to-subcutaneous-adipose-tissue-in-donor-nephrectomy-patients
#19
H H Lee, S K Kang, Y E Yoon, K H Huh, M S Kim, S I Kim, Y S Kim, W K Han
OBJECTIVE: It was reported that a metabolic syndrome affected the remaining renal function after living donor nephrectomy. However, the measurement of waist circumference is unclear because it cannot distinguish between visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT). We investigate the clinical correlation between body adipose tissue and renal function recovery after living donor nephrectomy. METHODS: From July 2013 to February 2015, 75 living kidney donors were enrolled...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28580537/ct-imaging-spectrum-of-infiltrative-renal-diseases
#20
REVIEW
David H Ballard, Luis De Alba, Matias Migliaro, Carlos H Previgliano, Guillermo P Sangster
Most renal lesions replace the renal parenchyma as a focal space-occupying mass with borders distinguishing the mass from normal parenchyma. However, some renal lesions exhibit interstitial infiltration-a process that permeates the renal parenchyma by using the normal renal architecture for growth. These infiltrative lesions frequently show nonspecific patterns that lead to little or no contour deformity and have ill-defined borders on CT, making detection and diagnosis challenging. The purpose of this pictorial essay is to describe the CT imaging findings of various conditions that may manifest as infiltrative renal lesions...
June 3, 2017: Abdominal Radiology
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