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renal mass, CT

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https://www.readbyqxmd.com/read/28209559/irreversible-electroporation-for-the-ablation-of-renal-cell-carcinoma-a-prospective-human-in-vivo-study-protocol-ideal-phase-2b
#1
Mara Buijs, Krijn P van Lienden, Peter Gk Wagstaff, Matthijs Jv Scheltema, Daniel M de Bruin, Patricia J Zondervan, Otto M van Delden, Ton G van Leeuwen, Jean Jmch de la Rosette, M Pilar Laguna
BACKGROUND: Irreversible electroporation (IRE) is an emerging technique delivering electrical pulses to ablate tissue, with the theoretical advantage to overcome the main shortcomings of conventional thermal ablation. Recent short-term research showed that IRE for the ablation of renal masses is a safe and feasible treatment option. In an ablate and resect design, histopathological analysis 4 weeks after radical nephrectomy demonstrated that IRE-targeted renal tumors were completely covered by ablation zone...
February 16, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28207510/endovascular-repair-of-bilateral-common-iliac-artery-aneurysms-using-gore-excluder-iliac-branch-endoprosthesis-without-aortobi-iliac-stent-graft-conjunction-a-case-report
#2
Vincenzo Ardita, Alessia Giaquinta, Massimiliano Veroux, Angelo Sanfiorenzo, Carla Virgilio, Giuseppe D'Arrigo, Pierfrancesco Veroux
INTRODUCTION: Bilateral common iliac artery (CIA) aneurysm (CIAA) is a rare entity. In the past decade, different endovascular approaches have been adopted for patients with several comorbidities or unfit for open repair (OR). Recently, the use of iliac branch stent graft has been proposed, resulting in satisfactory patency rates and decrease in morbidity. Currently, according to instruction for use, the iliac branch stent graft is to be used with aortobi-iliac stent graft conjunction...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28197683/aorta-lesion-attenuation-difference-alad-on-contrast-enhanced-ct-a-potential-imaging-biomarker-for-differentiating-malignant-from-benign-oncocytic-neoplasms
#3
Manish Dhyani, Joseph R Grajo, Dayron Rodriguez, Zhikui Chen, Adam Feldman, Rosemary Tambouret, Debra A Gervais, Ronald S Arellano, Peter F Hahn, Anthony E Samir
OBJECTIVE: To evaluate whether the Aorta-Lesion-Attenuation-Difference on contrast-enhanced CT can aid in the differentiation of malignant and benign oncocytic renal neoplasms. MATERIALS AND METHODS: Two independent cohorts-an initial (biopsy) dataset and a validation (surgical) dataset-with oncocytomas and chromophobe renal cell carcinomas (chRCC) were included in this IRB-approved retrospective study. A region of interest was placed on the renal mass and abdominal aorta on the same CT image slice to calculate an Aorta-Lesion-Attenuation-Difference (ALAD)...
February 14, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28193644/tumour-thrombus-of-the-inferior-vena-cava-extending-into-the-right-atrium-in-the-setting-of-colon-cancer
#4
Daniel Meyers, Nancy A Nixon, Angela Franko, Danny Ng, Vincent C Tam
Tumour thrombus is seen in renal cell and hepatocellular carcinoma, but is rarely reported in colorectal cancer. A woman aged 46 years, with metastatic colonic adenocarcinoma, was found to have a large mass in the inferior vena cava (IVC) extending into the right atrium. Although this lesion was initially thought to be bland thrombus, imaging with contrast-enhanced CT scan and contrast-enhanced ultrasound supported the diagnosis of tumour thrombus. Despite the large size of the lesion, the patient was asymptomatic...
February 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28177700/ct-guided-biopsy-of-entirely-endophytic-small-renal-masses-diagnostic-rates-and-complications-using-standard-dose-and-reduced-dose-ct-protocols
#5
Mi-Hyun Kim
OBJECTIVE: The objective of this study was to compare diagnostic rates and complications using standard-dose and reduced-dose CT protocols for CT-guided biopsies of entirely endophytic small renal masses. MATERIALS AND METHODS: A total of 73 patients with 74 tumors underwent CT-guided biopsy of entirely endophytic small renal masses (≤ 4 cm). Diagnostic rates, histologic findings, radiation doses, complication rates, and procedure duration were assessed by retrospective review of charts and images and were compared for the standard-dose and reduced-dose groups...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28168075/metastatic-renal-cell-carcinoma-presenting-as-a-paranasal-sinus-mass-the-importance-of-differential-diagnosis
#6
Massimo Ralli, Giancarlo Altissimi, Rosaria Turchetta, Mario Rigante
Metastases in the paranasal sinuses are rare; renal cell carcinoma is the most common cancer that metastasizes to this region. We present the case of a patient with a 4-month history of a rapidly growing mass of the nasal pyramid following a nasal trauma, associated with spontaneous epistaxis and multiple episodes of hematuria. Cranial CT scan and MRI showed an ethmoid mass extending to the choanal region, the right orbit, and the right frontal sinus with an initial intracranial extension. Patient underwent surgery with a trans-sinusal frontal approach using a bicoronal incision combined with an anterior midfacial degloving; histological exam was compatible with a metastasis of clear cell renal cell carcinoma...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28164162/management-of-urinoma-formation-after-laparoscopic-cryoablation-of-renal-cyst
#7
Shawn X Li, Lawrence M Dagrosa, Vernon M Pais
Aim: To describe the presentation and management of a urinoma developing as a complication of laparoscopic cryoablation of a Bosniak III renal cyst. Case: A 74-year-old woman presented with acute onset of severe left lower abdominal pain 1 day after a laparoscopic cryoablation of a 3 cm multilobular left cystic renal mass. CT revealed a perinephric fluid collection adjacent to the lower pole of the left kidney with active urinary extravasation seen on retrograde pyelogram, confirming the presence of an urinoma...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28151880/establishing-a-new-formula-for-estimating-renal-depth-in-a-chinese-adult-population
#8
Jianjun Xue, Huixing Deng, Xi Jia, Yuanbo Wang, Xueni Lu, Xiaoming Ding, Qiang Li, Aimin Yang
We aimed to establish a new formula for estimating renal depth, based on anthropometric variables, and to compare the estimates with actual data from a group of living kidney donors undergoing computed tomography angiography (CTA).Renal depths in 167 living kidney donors were measured by CTA. Regression analysis was used to derive the formulae for estimation of renal depth of both kidneys based on patient age, sex, body height, body weight, and body mass index (BMI). The results of the renal depth estimation from the derived formulae were compared with those using existing formulae...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28138432/spontaneous-nephrocutaneous-fistula-rare-complication-of-xanthogranulomatous-pyelonephritis
#9
Rami Alazab, Hamzeh M Ghawanmeh, Faris Abushamma, Omar Ababneh, Anas I Al-Karasneh
Renocutaneous fistulae may occur as a result of chronic infection, especially in the setting of calculous disease.(1) Spontaneous renocutaneous is rare.(2) Usually nephrocutanous fistula developed in patient with previous renal surgery, trauma, tumors, and chronic urinary tract infection with abscess formation. We report a case of spontaneous nephrocutaneous fistula. A 37-year-old women previously well presented to ER department with purulent discharge and a palpable mass on the left lumbar area. CT scan with IV contrast fistulous tract seen within the subcutaneous plane in Left lumbar region tracking towards retroperitoneal space, and in continuity with of left kidney...
February 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28127178/magnetic-resonance-imaging-and-the-use-in-small-renal-masses
#10
REVIEW
M Vedanayagam, B Bhattacharya, S Sriprasad
The incidence of small renal masses (SRM) has been increasing, and this is mainly attributed to the incidental finding of such masses on imaging performed in asymptomatic patients. Consequently, this calls for careful evaluation and management of these masses to determine their nature and need for treatment. This article reviews current literature regarding the evaluation and management of SRM. It focuses on the specific use of MRI in the diagnosis and management of SRM. A Medline review of the literature was performed from 1996 to the present time...
March 2017: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28127177/prognostic-benefit-of-surgical-management-of-renal-cell-carcinoma-invading-the-inferior-vena-cava
#11
REVIEW
Aikaterini Mastoraki, Sotiria Mastoraki, Maria Tsikala-Vafea, Ioannis S Papanikolaou, Andreas Lazaris, Vassilios Smyrniotis, Nikolaos Arkadopoulos
Renal cell carcinoma (RCC) accounts for approximately 3 % of adult malignancies and 90-95 % of neoplasms arising from the kidney. One of the unique features of RCC is the tumor thrombus formation that migrates into the venous system including renal vein (RV) and inferior vena cava (IVC). Only 10 % of patients with RCC present with the classic triad of flank pain, hematuria and defined mass, while 25-30 % of affected patients are asymptomatic. Signs of para-neoplastic syndrome such as hypercalcemia, hypertension, anemia, cachexia and increased erythrocyte sedimentation rate (ESR) are often apparent...
March 2017: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28126221/dual-energy-computed-tomography-in-genitourinary-imaging
#12
REVIEW
Achille Mileto, Daniele Marin
Reignited by innovations in scanner engineering and software design, dual-energy computed tomography (CT) has come back into the clinical radiology arena in the last decade. Possibilities for noninvasive in vivo characterization of genitourinary disease, especially for renal stones and renal masses, have become the pinnacle offerings of dual-energy CT for body imaging in clinical practice. This article renders a state-of-the-art review on clinical applications of dual-energy CT in genitourinary imaging.
March 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/28121909/urinary-metabolomics-for-noninvasive-detection-of-antibody-mediated-rejection-in-children-after-kidney-transplantation
#13
Tom D Blydt-Hansen, Atul Sharma, Ian W Gibson, David S Wishart, Rupasri Mandal, Julie Ho, Peter Nickerson, David Rush
BACKGROUND: Biomarkers are needed that identify patients with antibody-mediated rejection (ABMR). The goal of this study was to evaluate the utility of urinary metabolomics for early noninvasive detection of ABMR in pediatric kidney transplant recipients. METHODS: Urine samples (n=396) from a prospective, observational cohort of 59 renal transplant patients with surveillance or indication biopsies were assayed for 133 unique metabolites by quantitative mass spectrometry...
January 25, 2017: Transplantation
https://www.readbyqxmd.com/read/28114787/multi-point-thermal-sensors-associated-with-improved-oncological-outcomes-following-cryoablation
#14
Jeremy W Martin, Roshan Patel, Zhamshid Okhunov, Aashay Vyas, Duane Vajgrt, Ralph Clayman
INTRODUCTION: Cryoablation (CA) is a minimally invasive modality for the management of small renal cortical neoplasms (RCN). Successful ablation is dependent on achieving target temperatures during CA that result in tumor cell death. We investigated long-term oncological outcomes following CA using Multi-Point Thermal Sensors (MTS), which allow precise temperature determination at four points along the needle. METHODS: We performed a retrospective review of 20 patients with < 4 cm RCN who underwent de novo CA from 2005 to 2009...
January 23, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28114223/defining-the-added-value-of-99mtc-mibi-spect-ct-to-conventional-cross-sectional-imaging-in-the-characterization-of-enhancing-solid-renal-masses
#15
Sara Sheikhbahaei, Christopher S Jones, Kristin K Porter, Steven P Rowe, Michael A Gorin, Alex S Baras, Phillip M Pierorazio, Mark W Ball, Takahiro Higuchi, Pamela T Johnson, Lilja B Solnes, Jonathan I Epstein, Mohamad E Allaf, Mehrbod S Javadi
PURPOSE: This study investigates whether the addition of preoperative Tc-MIBI SPECT/CT can increase the degree of diagnostic confidence in the differentiation of benign from malignant enhancing renal masses. PATIENTS AND METHODS: Patients were recruited as part of an institutional review board-approved prospective clinical trial. Forty-eight patients with clinical stage T1 solid renal masses who underwent a Tc-MIBI SPECT/CT before partial or radical nephrectomy were evaluated...
January 20, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28104743/active-brown-fat-during-18fdg-pet-ct-imaging-defines-a-patient-group-with-characteristic-traits-and-an-increased-probability-of-brown-fat-redetection
#16
Carlos Gerngroß, Johanna Schretter, Martin Klingenspor, Markus Schwaiger, Tobias Fromme
Brown adipose tissue (BAT) provides a means of non-shivering thermogenesis. In humans, active BAT can be visualized by (18)F-fluoro-desoxyglucose (FDG) uptake as detected by positron emission tomography (PET) combined with computer tomography (CT). The retrospective analysis of clinical scans is a valuable source to identify anthropometric parameters that influence BAT mass and activity and thus the potential efficacy of envisioned drugs targeting this tissue to treat metabolic disease. We analyzed 2854 FDG-PET/CT scans from 1644 patients and identified 98 scans from 81 patients with active BAT...
January 19, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28103657/-a-case-of-primary-hyperparathyroidism-complicated-with-hypercalcemic-crisis-during-treatment-with-cinacalcet-and-improved-by-active-treatment
#17
Tomoki Takeda, Atsushi Okada, Rei Unno, Yukihiro Umemoto, Keiichi Tozawa, Takahiro Yasui
A 77-year-old man was referred to our department for surgical treatment of a right ureteral stone identified on computed tomography (CT) during intensive examination for spondylolisthesis of L4-L5. At the initial visit, performance status was 4, and renal dysfunction was identified (Cr 1.3 mg/dl). Corrected calcium level was 11.8 mg/dl, and intact parathyroid hormone level was 555 pg/ml. A CT scan showed a well-defined mass measuring 22×16×20 mm on the right side of the esophagus, along with 99mTc-MIBI uptake in the lesion...
December 2016: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/28100214/preoperative-lipiodol-marking-and-its-role-on-survival-and-complication-rates-of-ct-guided-cryoablation-for-small-renal-masses
#18
Fumiya Hongo, Yasuhiro Yamada, Takashi Ueda, Terukazu Nakmura, Yoshio Naya, Kazumi Kamoi, Koji Okihara, Yusuke Ichijo, Tsuneharu Miki, Kei Yamada, Osamu Ukimura
BACKGROUND: Partial nephrectomy for small renal masses (SRM) may be useful for preserving renal function, but is technically more difficult than radical nephrectomy. Cryoablation may be performed under local anesthesia. The objective of the present study is to assess the safety and therapeutic efficacy of cryoablation with lipiodol marking for SRM. METHODS: Cryoablation therapy was performed on 42 patients under local anesthesia. Their median age was 74 years (31-91)...
January 18, 2017: BMC Urology
https://www.readbyqxmd.com/read/28095016/renal-masses-detected-on-fdg-pet-ct-in-patients-with-lymphoma-imaging-features-differentiating-primary-renal-cell-carcinomas-from-renal-lymphomatous-involvement
#19
Carlos Nicolau, Evis Sala, Anita Kumar, Debra A Goldman, Heiko Schoder, Hedvig Hricak, Hebert Alberto Vargas
OBJECTIVE: The purpose of this study is to analyze the (18)F-FDG PET/CT features of solid renal masses detected in patients with lymphoma and to evaluate the ability of PET/CT to differentiate renal cell carcinoma (RCC) from renal lymphomatous involvement. MATERIALS AND METHODS: Thirty-six patients with solid renal masses on PET/CT performed for staging or follow-up of lymphoma were evaluated retrospectively. The features recorded for each renal mass included the following standardized uptake values (SUVs) on PET/CT: the maximum SUV (SUVmax), the mean SUV (SUVmean), the ratio of the SUVmax of the tumor to that of the normal kidney cortex, the ratio of the SUVmean of the tumor to that of the normal kidney cortex, the ratio of the SUVmax of the tumor to that of the normal liver, and the ratio of the SUVmean of the tumor to that of the normal liver...
January 17, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28072625/evaluation-of-a-large-renal-mass-using-99mtc-mibi-spect-ct-in-a-patient-with-chronic-kidney-disease
#20
Steven P Rowe, Michael A Gorin, Mehrbod S Javadi, Mohamad E Allaf
The differentiation of benign and indolent renal masses from aggressive tumor histologies cannot be reliably performed by CT or MRI. Additionally, renal mass biopsy risks complications and has a nondiagnostic rate of 10% to 20%. Tc-MIBI SPECT/CT has been shown to allow for the accurate differentiation of benign renal oncocytomas and hybrid oncocytic/chormophobe tumors from other more aggressive renal tumor types. We present the case of an 84-year-old man with chronic kidney disease and an 11.2-cm renal mass...
March 2017: Clinical Nuclear Medicine
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