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https://www.readbyqxmd.com/read/29325432/risk-factors-for-primary-failure-of-metallic-ureteral-stents-experience-from-a-tertiary-center
#1
Jui-Shan Hsu, Chao-Yuan Huang, Kao-Lang Liu, Po-Ming Chow
INTRODUCTION: We provide primary patency rate of metallic ureteral stents in cancer patients and investigate the factors affecting primary patency. METHODS: All cancer patients who had received metallic stents for malignant ureteral obstruction between July 2009 and November 2012 in our institute were included. No patients were excluded. Patient profiles, imaging studies, and lab data were collected. Patient profiles included age, gender, body height, body weight, body mass index, cancer types, treatment for cancer, response to cancer treatment, methods of stent insertion, and prior ordinary stents...
January 12, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29319547/the-role-of-molecular-imaging-in-the-characterization-of-renal-masses
#2
Alexa R Meyer, Mohamad E Allaf, Steven P Rowe, Michael A Gorin
PURPOSE OF REVIEW: To explore the role of molecular imaging in the characterization of renal masses. RECENT FINDINGS: Incidentally detected renal masses exhibit variable malignant potential related to their underlying histology. Patients presenting with a renal mass should undergo individual risk stratification including characterization of their tumor histology. At the present time, anatomical imaging techniques are unable to reliably distinguish between the various renal tumor subtypes...
January 11, 2018: Current Opinion in Urology
https://www.readbyqxmd.com/read/29310387/renal-hybrid-oncocytic-chromophobe-tumor-associated-with-multiple-schwannomas-case-report-and-literature-review
#3
Guanghua Liu, Yatong Li, Zhuoran Li, Jingmin Zhou, Zhen Huo, Zhigang Ji
RATIONALE: Renal hybrid oncocytic/chromophobe tumors (HOCTs) are benign tumors containing a mixture of cells with features of chromophobe renal cell carcinoma (CHRCC) and renal oncocytoma (RO). Sporadic HOCT, which means HOCT occurs in patients without Birt-Hogg-Dubé syndrome (BHDS) or renal oncocytosis, is extremely rare. In this article, we would report a new case of a patient with both sporadic HOCT and multiple Schwannomas, which is even rarer than simplex sporadic HOCT. PATIENT CONCERNS: A 48-year-old female was noted with multiple left-kidney masses and a history of multiple Schwannomas...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29305199/quantitative-contour-analysis-as-an-image-based-discriminator-between-benign-and-malignant-renal-tumors
#4
Felix Y Yap, Darryl H Hwang, Steven Y Cen, Bino A Varghese, Bhushan Desai, Brian D Quinn, Megha Nayyar Gupta, Nieroshan Rajarubendra, Mihir M Desai, Manju Aron, Gangning Liang, Monish Aron, Inderbir S Gill, Vinay A Duddalwar
OBJECTIVES: To investigate whether morphologic analysis can differentiate benign versus malignant renal tumors on clinically acquired imaging. METHODS: Between 2009 and 2014, 3D tumor volumes were manually segmented from contrast-enhanced computerized tomography (CT) images from 150 patients with predominantly solid, non-macroscopic fat-containing renal tumors: 100 renal cell carcinomas (RCC) and 50 benign lesions (e.g. oncocytoma, lipid-poor angiomyolipoma). Tessellated 3D tumor models were created from segmented voxels using MATLAB code...
January 2, 2018: Urology
https://www.readbyqxmd.com/read/29299091/oncocytoma-a-differential-consideration-for-an-incidentally-detected-fdg-avid-renal-mass-on-pet-ct
#5
Christopher J Smith, Mindy X Wang, Michael Feely, Brandon Otto, Joseph R Grajo
Renal oncocytoma is a benign renal neoplasm that is often discovered incidentally and closely mimics renal cell carcinoma on common imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI). Due to the inability to reliably distinguish between these benign and malignant lesions with imaging, both are typically treated as if they are malignant. Hypermetabolic activity of renal oncocytomas is not frequently encountered because positron emission tomography (PET) is not a standard modality for imaging primary renal tumors...
May 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29296167/renal-myxoma-in-a-pediatric-transplant-recipient
#6
Jeffrey J Tutman, Anil G Rao, Jeanne G Hill, Connor D Crowley
Renal myxoma is a very rare benign neoplasm seen almost exclusively in adults with only 16 reported cases in the literature. All of these cases have been reported in native kidneys with none being reported in a transplant kidney. We report the case of a renal myxoma in a 17-year-old boy's transplant kidney that was found as an incidental mass on ultrasonography and further evaluated with CT and PET scans. PET findings of a renal myxoma are reported here for the first time, and imaging findings from previous cases are briefly reviewed...
November 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29290085/extra-renal-transplanted-kidney-stone-case-presentation-and-literature-review
#7
Abbas Basiri, Mohammad Nadjafi Semnani, Hamed Mohseni Rad
Soft tissue calcification is common in uremic patients. Wound calcification or ossification is not so prevalent except in specific conditions like inflammation and ischemia or wound tension. We present a 40-year-old transplanted patient, not only perirenal ossification but also with multiple perirenal stones. The presentation was severe pain on the site of transplantation. Pre-op CT scan revealed perirenal calcified mass. Intraoperative finding was verythick tissue accompanied with a lot of stones around the transplanted kidney...
December 30, 2017: Urology Journal
https://www.readbyqxmd.com/read/29287893/-tumoral-calcinoses-in-a-chronic-hemodialysis-patient-the-role-of-spect-ct-hybrid-imaging
#8
Aboubakr Matrane, Soufiane Hiroual, Mohamed Aziz Bsiss, Safa Bennani Doubli
INTRODUCTION: Tumoral calcinosis is a rare benign disease, defined by the presence of calcified deposits in periarticular tissues. It can be hereditary or secondary at chronic renal failure at the stage of dialysis. This work illustrates the contribution of single-photon emission computed tomography (SPECT/CT) in the diagnosis and management of tumoral calcinoses in a chronic hemodialysis patient, based on a clinical case. CASE REPORT: A 62-year-old patient, chronic hemodialysis since 24 years, presented a mechanical pain shoulders, knees and hips with limitation of joint mobility...
December 26, 2017: Néphrologie & Thérapeutique
https://www.readbyqxmd.com/read/29279887/regional-variation-of-computed-tomographic-imaging-in-the-united-states-and-the-risk-of-nephrectomy
#9
H Gilbert Welch, Jonathan S Skinner, Florian R Schroeck, Weiping Zhou, William C Black
Importance: While computed tomography (CT) represents a tremendous advance in diagnostic imaging, it also creates the problem of incidental detection-the identification of tumors unrelated to the clinical symptoms that initiate the test. Objective: To determine the geographic variation in the United States in CT imaging and the corresponding association with one of the most consequential sequelae of incidental detection: nephrectomy. Design, Setting, and Participants: This study is a cross-sectional analysis of age-, sex-, and race-adjusted Medicare data (January 2010-December 2014) from 306 hospital referral regions (HRRs) in the United States and includes information from 15 million fee-for-service Medicare beneficiaries age 65 to 85 years...
December 26, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/29279872/massive-dilation-of-the-ureter-an-endoscopic-management-of-persistent-urinary-leak-after-partial-nephrectomy
#10
Panagiotis Pardalidis, Nick Andriopoulos, Eleni Kosmaoglou, Nick Pardalidis
Introduction: The incidence of urinary leakage is increased as nephron sparing surgery becomes more used for the management of small renal masses. We present an endourologic approach in a patient with a persistent urinary leak after partial nephrectomy by placing two synchronous ureteral stents to improve drainage and avoid further potential surgery. Patients and Method: A 39-year-old patient presented with a urine leak on the fifth postoperative day after an open partial nephrectomy. Initially, the leakage was managed with a placement of a 6F Double-J stent...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/29274599/bowel-obstruction-in-obturator-hernia-a-challenging-diagnosis
#11
L Conti, E Baldini, P Capelli, C Capelli
INTRODUCTION: The obturator hernia is a rare pelvic hernia that often comes in the shape of bowel obstruction caused by the presence of an intestinal segment, more often ileum, passing trough the obturator foramen of the pelvic wall (Fig. 1). This type of hernia accounts for 0.5-1.4% of all hernias. CASE PRESENTATION: We report the clinical case of a 84-year-old woman with no previous surgical interventions, who went to the emergency room complaining of vomit and nausea, bowels closed to gas and stool, which she had experienced for three previous days...
December 7, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29247259/effect-of-sarcopenia-on-clinical-and-surgical-outcome-in-elderly-patients-with-proximal-femur-fractures
#12
Ching-Di Chang, Jim S Wu, Jennifer Ni Mhuircheartaigh, Marry G Hochman, Edward K Rodriguez, Paul T Appleton, Colm J Mcmahon
PURPOSE: To investigate the relationship between sarcopenia with short-term surgical outcome in elderly patients with proximal femur fractures. METHODS AND MATERIALS: Following Institutional Review Board approval, a database of patients receiving a pelvis CT scan for acute trauma between January 2000-August 2016 was screened for an isolated proximal femur fracture. Patients were excluded if they were: < 50 years old, had conditions predisposing to sarcopenia (renal failure, congestive heart failure, muscular dystrophies), had undergone no surgical treatment, had other major traumatic injuries, or had a pathologic femur fracture...
December 15, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29245241/inflammatory-myofibroblastic-tumor-of-kidney-together-with-ipsilateral-perinephric-and-periureteric-fibrosis-a-case-report-and-literature-review
#13
Zhuolun Sun, Hanbo Wang, Xudong Guo, Shaobo Jiang, Changying Jing
RATIONALE: Both inflammatory myofibroblastic tumor (IMT) and retroperitoneal fibrosis are rare lesions, but kidney involvement is more rare. It is the first study about IMT of the kidney in a patient with perinephric and periureteric fibrosis and we hold that fibroblast proliferation may be an intermediate status in oncogenesis of IMT. But further investigation is necessary in order to better clarify the relationship between fibroblast proliferation and IMT. PATIENT CONCERNS: A 54-year-old female presented no positive signs except dull back pain after overwork...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29236066/avid-18f-fdg-uptake-in-idiopathic-tumoral-calcinosis-mimicking-lymph-node-metastasis
#14
Jesper Strandberg, Helle D Zacho
Tumoral calcinosis is a benign condition characterized by periarticular calcified lesions that is frequently observed in patients with chronic renal failure. Tumoral calcinosis often presents with subcutaneous masses and joint swelling. We present a case of tumoral calcinosis with dramatically increased 18F-fluoro-2-deoxy-d-glucose (18F-FDG) uptake on positron emission tomography/computed tomography (PET/CT) that mimicked lymphoma or lymph node metastases.
December 13, 2017: Diagnostics
https://www.readbyqxmd.com/read/29233628/xanthogranulomatous-pyelonephritis-in-a-paediatric-cohort-1963-2016-outcomes-from-a-large-single-center-series
#15
I Stoica, F O'Kelly, M B McDermott, F M J Quinn
BACKGROUND: Xanthogranulomatous pyelonephritis (XGP) is an uncommon chronic destructive granulomatous inflammation of the kidney. It was first described in 1916, and is thought to affect 6/1000 cases of pyelonephritis. Its manifestations are varied, and with a limited number of cases in the literature, the optimal diagnosis and management of XGP in the paediatric cohort is still unknown. MATERIAL AND METHODS: The medical records of children who were diagnosed and treated for XGP at the current unit during the period 1963-2016, inclusive, were retrospectively reviewed...
November 24, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29223882/recurrent-renal-cancer-in-birt-hogg-dub%C3%A3-syndrome-a-case-report
#16
Hammad Ather, Nida Zahid
INTRODUCTION: Birt-Hogg-Dubé syndrome (BHDS) is a rare autosomal dominant disease. It is caused by constitutional mutations in the FLCN gene. Since BHDS is a rare syndrome therefore it is unknown to many physicians. However, it is important to identify this rare syndrome at early stages because incidence of renal cancer in BHD patients is very high and its detection at early stages can prevent its metastasis. Hence, we want to present a case of BHDS and draw the attention of the treating physician to this rare inherited disorder and discuss its appropriate diagnosis and management...
November 28, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29218489/contrast-enhanced-ultrasound-of-the-kidney-a-single-institution-experience
#17
Sheng F Oon, Robert W Foley, Deirdre Quinn, David M Quinlan, Robert G Gibney
BACKGROUND: Focal renal masses are typically evaluated by means of triphasic contrast-enhanced CT or MRI scan but use of iodinated contrast or gadolinium is unsuitable for some patients. Contrast-enhanced ultrasound (CEUS) is an imaging alternative in this scenario but has limited availability in Ireland. AIM: The aim of the study was to retrospectively evaluate experience with selective use of CEUS for non-invasive characterization of focal renal masses in a tertiary referral institution in Ireland, with a particular focus on cystic renal lesions and the influence of CEUS on final Bosniak classification and treatment outcomes...
December 7, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/29214562/use-of-quantitative-spect-ct-reconstruction-in-99mtc-sestamibi-imaging-of-patients-with-renal-masses
#18
Krystyna M Jones, Lilja B Solnes, Steven P Rowe, Michael A Gorin, Sara Sheikhbahaei, George Fung, Eric C Frey, Mohamad E Allaf, Yong Du, Mehrbod S Javadi
OBJECTIVE: Technetium-99m (99mTc)-sestamibi single-photon emission computed tomography/computed tomography (SPECT/CT) has previously been shown to allow for the accurate differentiation of benign renal oncocytomas and hybrid oncocytic/chromophobe tumors (HOCTs) apart from other malignant renal tumor histologies, with oncocytomas/HOCTs showing high uptake and renal cell carcinoma (RCC) showing low uptake based on uptake ratios from non-quantitative single-photon emission computed tomography (SPECT) reconstructions...
December 6, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/29212363/laparoscopic-versus-percutaneous-cryotherapy-for-renal-tumours-a-systematic-review-and-meta-analysis
#19
Omar M Aboumarzouk, Mohamed Ismail, David Breen, Marco Van Strijen, Julein Garnon, Brunolf Lagerveld, Tommy Nielsen, Francis Keeley
BACKGROUND: Cryoablation has emerged as an alternative to the more invasive partial nephrectomy for small renal masses. The approach can be carried out by two techniques, either laparoscopic (LCA) or percutaneous with CT guidance (PCA). We aimed to compare between the two procedures. MATERIAL & METHODS: A systematic review and meta-analysis was conducted including studies comparing the two techniques. Outcomes included incomplete ablation, late local recurrence, cancer specific survival, procedure time, transfusion rates, hospital stay, and complications...
December 6, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/29202667/percutaneous-microwave-ablation-of-renal-cell-carcinoma-using-a-high-power-microwave-system-focus-upon-safety-and-efficacy
#20
D K Filippiadis, C Gkizas, M Chrysofos, A Siatelis, G Velonakis, E Alexopoulou, A Kelekis, E Brountzos, N Kelekis
OBJECTIVES: Percutaneous ablation is an expanding, minimally invasive approach for small- to medium-sized renal masses. The purpose of this study is to review safety, and mid-term efficacy of percutaneous microwave ablation (MWA) for Renal Cell Carcinoma (RCC) treatment using a high power microwave system. METHODS AND MATERIALS: Institutional database research identified 50 consecutive patients with a single lesion resembling renal cell carcinoma in CT and MRI who underwent percutaneous microwave ablation using a high power microwave system...
December 4, 2017: International Journal of Hyperthermia
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