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renal mass, CT

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https://www.readbyqxmd.com/read/28331942/contrast-enhanced-ultrasound-for-differentiating-benign-from-malignant-solid-small-renal-masses-comparison-with-contrast-enhanced-ct
#1
Shu-Ping Wei, Chao-Li Xu, Qing Zhang, Qi-Rui Zhang, Yan-E Zhao, Peng-Fei Huang, Ying-Dong Xie, Chang-Sheng Zhou, Fu-Li Tian, Bin Yang
PURPOSE: The study aimed to compare the diagnostic efficiency of contrast-enhanced ultrasound (CEUS) with that of contrast-enhanced computed tomography (CECT) in the evaluation of benign and malignant small renal masses (SRMs) (<4 cm) confirmed by pathology. METHODS: A total of 118 patients with 118 renal masses smaller than 4 cm diagnosed by both CEUS and CECT were enrolled in this study, including 25 benign lesions and 93 malignant lesions. All lesions were confirmed by histopathologic diagnosis after surgical resection...
March 22, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28328257/differentiating-renal-neoplasms-from-simple-cysts-on-contrast-enhanced-ct-on-the-basis-of-attenuation-and-homogeneity
#2
Nnenaya Agochukwu, Steffen Huber, Michael Spektor, Alexander Goehler, Gary M Israel
OBJECTIVE: The purpose of this study is to compare the attenuation and homogeneity of renal neoplasms with those of cysts on contrast-enhanced CT. MATERIALS AND METHODS: A total of 129 renal neoplasms and 24 simple cysts were evaluated. Two readers determined whether each mass was qualitatively heterogeneous or homogeneous. Mean, minimum, and maximum attenuation values were measured. Statistical analysis was performed. RESULTS: A total of 116 heterogeneous renal cell carcinomas (RCCs) (99 clear cell, four papillary, four oncocytic, seven chromophobe, and two unclassified RCCs), 13 homogeneous RCCs (10 papillary, two oncocytic, and one chromophobe RCC), and 24 cysts (all of which were homogeneous) were evaluated...
April 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28321331/ct-patterns-of-organizing-pneumonia-in-patients-treated-with-vegf-mtor-inhibitors-for-metastatic-renal-cell-cancer-an-observational-study
#3
Sabine Dettmer, Viktor Grünwald, Thomas Fuehner, Arnold Ganser, Frank Wacker, Philipp Ivanyi, Thomas Rodt
BACKGROUND: Targeted therapies are the standard treatment in patients with metastatic renal cell carcinoma (mRCC) and are known to cause adverse pulmonary events. Organizing pneumonia (OP) with its various manifestations in computed tomography (CT) has therefore lately received more attention. PURPOSE: To describe the spectrum of CT patterns of OP in patients with mRCC receiving targeted therapies. MATERIAL AND METHODS: Seventeen patients with known therapy-related OP were analyzed retrospectively by two blinded radiologists in consensus...
February 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28318517/-intracardiac-myxoma-complicated-by-acute-aortic-occlusion-case-report
#4
O Zizi, B Benfor, H Jiber, A Bouarhroum, S Benlamkaddem, N Kanjaa
We report the case for a 44-year-old patient without medical history, admitted in our department for bilateral acute limb ischemia (H6). The patient was hemodynamically stable and the physical examination shows limb sever ischemia (no femoral arterial pulses, coldness, cyanosis and paralysis). Abdominal CT angiography showed a complete occlusion of the infra renal abdominal aorta compatible with embolus. An embolectomy with Fogarty catheters was performed. Echocardiography showed a mass in the left atrium. Pathological examination of the material embolic confirmed the diagnosis of the cardiac myxoma...
March 16, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28315919/a-rare-adult-renal-neuroblastoma-better-imaged-by-18-f-fdg-than-by-68-ga-dotanoc-in-the-pet-ct-scan
#5
Tarun Kumar Jain, Sharwan Kumar Singh, Ashwani Sood, Abhiram Gj Ashwathanarayama, Rajender Kumar Basher, Jaya Shukla, Bhagwant Rai Mittal
Primary renal neuroblastoma is an uncommon tumor in children and extremely rare in adults. We present a case of a middle aged female having a large retroperitoneal mass involving the right kidney with features of neuroblastoma on pre-operative histopathology. Whole-body fluorine-18-fluoro-deoxyglucose positron emission tomography ((18)F-FDG PET/CT) and (68)Ga-dotanoc PET/CT scans performed for staging and therapeutic potential revealed a tracer avid mass replacing the right kidney and also pelvic lymph nodes...
March 20, 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28315498/primitive-neuroectodermal-tumour-of-kidney-with-thrombosis-of-the-inferior-vena-cava-and-good-responsive-to-surgical-and-medical-treatment-description-of-a-case-and-revision-of-literature
#6
Giovanni L Giliberto, Carmelo A Di Franco, Bruno Rovereto
Primitive neuroectodermal tumour (PNET) of kidney is a rare cancer typical of young adults with few cases described in the literature. We report a case of renal PNET in a 31-year-old man who presented to our department with a computed tomographic (CT)-scan revealing a large renal mass of 20 cm, massive thrombosis of the inferior vena cava (IVC). The patient underwent radical nephrectomy with contextual retroperitoneal lymphadenectomy and resection of IVC needing Dacron prosthesis substitution. Definitive histopathological examination showed PNET of kidney infiltrating ipsilateral adrenal gland, massive cava thrombosis with infiltration of vena cava wall and one lymph nodal metastasis...
March 15, 2017: Urologia
https://www.readbyqxmd.com/read/28306331/intraoperative-radiographic-determination-of-ureteral-length-as-a-method-of-determining-ideal-stent-length
#7
Keith Barrett, Daniela Ghiculete, Robert J Sowerby, Monica Farcas, Kenneth T Pace, Richardson John D'Arcy Honey
INTRODUCTION: Accurate determination of ureteral length (UL) and appropriate stent length remains a challenge. The objective of this study was to describe an intraoperative technique to measure UL and determine appropriate stent length, and to compare this technique with other methods of determining appropriate stent length. METHODS: Patients undergoing ureteroscopy requiring postoperative stenting and who had a preoperative CT were prospectively identified. Gender, age, height, body mass index, L1 to L5 lumbar height on CT, and surgeon's estimate of UL were recorded...
March 17, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28301210/update-of-dual-energy-ct-applications-in-the-genitourinary-tract
#8
Ravi K Kaza, Lakshmi Ananthakrishnan, Avinash Kambadakone, Joel F Platt
OBJECTIVE: Dual-energy CT (DECT) is being increasingly used for abdominal imaging because it provides incremental benefit of material characterization without significant increase in radiation dose. This article provides an overview of current DECT techniques and use of DECT in urinary tract imaging for assessment of renal masses and urinary calculi characterization and in CT urography. CONCLUSION: Incorporation of DECT into clinical practice and use of its material characterization capabilities in urinary tract imaging enable characterization of urinary calculi and incidental renal lesions and can reduce radiation dose by allowing generation of virtual unenhanced images...
March 16, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28299237/asymptomatic-urolithiasis-complicated-by-nephrocutaneous-fistula
#9
Marion Hamard, Gaël Amzalag, Christoph D Becker, Pierre-Alexandre Poletti
Asymptomatic spontaneous nephrocutaneous fistula is a rare and severe complication of chronic urolithiasis. We report a case of 56-year-old woman with a nephrocutaneous fistula (NFC) which developed from a superinfected urinoma following calyceal rupture due to an obstructing calculus in the left ureter. The patient was clinically asymptomatic and came to the emergency department for a painless left flank fluctuating mass. This urinoma was superinfected, with a delayed development of renal abscesses and perirenal phlegmon found on contrast-enhanced uro-computed tomography (CT), responsible for left renal vein thrombophlebitis and left psoas abscess...
2017: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/28291714/analysis-of-the-renal-and-mrenal-scores-and-the-relative-importance-of-their-components-in-the-prediction-of-complications-and-local-progression-after-percutaneous-renal-cryoablation
#10
Samdeep K Mouli, Joseph L McDevitt, Yu-Kai Su, Ann B Ragin, Yi Gao, Albert A Nemcek, Robert J Lewandowski, Riad Salem, Kent T Sato
PURPOSE: To determine if modified RENAL (mRENAL) score and its individual components have superior predictive value relative to the RENAL nephrometry score in prediction of complications and recurrence after percutaneous renal cryoablation. MATERIALS AND METHODS: Primary masses treated with CT-guided percutaneous renal cryoablation between June 2007 and May 2016 were retrospectively reviewed. RENAL and mRENAL scores were used to stratify masses into low, medium, and high complexity tertiles...
March 10, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28273978/renal-clear-cell-sarcoma-anaplastic-variant-a-rare-entity
#11
Vaishali Atmaram Walke, Nitin Y Shende, D T Kumbhalkar
Clear Cell Sarcoma of Kidney (CCSK) is known for its morphologic diversity, aggressive behaviour, tendency to recur and metastasis to bone. Amongst the various morphologic subtypes, anaplastic CCSK is associated with worse prognosis. Here, we report a case of this rare variant of CCSK. A five-year-old boy presented with history of lump and pain in abdomen since one week. The Computed Tomography (CT) scan revealed a large mass occupying the middle and inferior pole of right kidney. The clinical impression was Wilms tumour...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28256497/a-retroperitoneal-extra-renal-wilms-tumour-a-case-report
#12
S Wabada, A S Abubakar, A I Adamu, A Kabir, L B Gana
Wilms' tumour originates predominantly in the renal tissue; in rare cases it can also arise from extra-renal sites accounting for 0.5-1% of cases of Wilms' tumours seen. A diagnosis of extra-renal Wilms' cannot be easily established with clinical and radiological features except when the histological facts are provided. Wilms' tumours arising from extra-renal sites may not be different in clinical features, protocol of treatment and outcome from a typical intra renal Wilms' tumour. A 2-year-old boy presented with an asymptomatic abdominal swelling for 3 months...
March 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28255734/robot-assisted-laparoscopic-transperitoneal-infrarenal-lymphadenectomy-in-patients-with-locally-advanced-cervical-cancer-by-single-docking-do-we-need-a-backup-procedure
#13
Fatih Gucer, Selim Misirlioglu, Nuri Ceydeli, Cagatay Taskiran
To present our initial experience on the feasibility of robotic transperitoneal para-aortic lymphadenectomy up to left renal vein via single docking approach by high port insertion technique followed by left shoulder docking as a rescue backup procedure in surgically obstructed patients undergoing surgical staging because of locally advanced cervical cancer (LACC). Prospective observational preliminary study. Canadian Task Force classification II-3. Tertiary-care academic affiliated private hospital. Ten patients with LACC who underwent robotic transperitoneal infrarenal para-aortic lymphadenectomy between January 2012 and December 2014...
March 2, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28249616/tumor-to-tumor-metastases-papillary-thyroid-carcinoma-into-a-clear-cell-renal-cell-carcinoma
#14
Jin Soo Andy Song, S Mark Taylor, Jonathan Trites, Matthew H Rigby, Martin Joseph Bullock, Jennifer Merrimen, Ricardo Rendon, Robert D Hart
BACKGROUND: Thyroid metastases to distant sites are uncommon incidents, most often metastasizing to the lungs and bones. Rates of metastasis to the kidney are particularly low, ranging from 2.8-3.8% for papillary and 6-20% for follicular variants of well-differentiated thyroid cancers (WDTCs). In rare instances, tumor-to-tumor metastasis between two true primary neoplasms can occurs. This medical phenomenon has previously occurred as a clear cell renal cell carcinoma (CCRCC) spreading to a WDTC...
March 1, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28242987/renal-metastasis-and-dual-18-f-fluorodeoxyglucose-and-131-i-avid-skeletal-metastasis-in-a-patient-with-papillary-thyroid-cancer
#15
Prashanth Kulkarni, Pobbi Setty Radhakrishna Gupta Rekha, Meghana Prabhu, Sunil Hejjaji Venkataramarao, Nalini Raju, Naveen Hedne Chandrasekhar, Subramanian Kannan
Differentiated thyroid carcinoma (DTC) though usually behaves in an indolent manner, can have unusual metastatic presentation. Initial presentation of metastatic disease has been reported in 1-12% of DTC being less frequent in papillary (~2%) than in follicular (~10%) thyroid carcinoma. Renal metastasis from DTC is very rare. To our knowledge, only about 30 cases have been reported in the English literature to date. To make clinicians aware that management of such high-risk thyroid cancer frequently requires novel multimodality imaging and therapeutic techniques...
January 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28242092/-cutaneous-involvement-in-t-lymphoblastic-lymphoma
#16
C Nascimbeni, S Chantepie, C Brugiere, F Comoz, V Salaun, L Verneuil
BACKGROUND: Lymphoblastic lymphoma (LBL) is a rare form of non-Hodgkin's lymphoma (NHL). Cutaneous LBL is seen in less than 20% of patients. PATIENTS AND METHODS: Herein, we report the case of a 66-year-old male patient without any previous disease history of note and who was presenting a gradually spreading tumoral lesion of the scalp, several purplish macules and nodules on the trunk, and a single spinal adenopathy. A thoracic-abdominal-pelvic CT scan performed for acute renal failure, revealed extensive infiltration of retroperitoneal tissue...
February 24, 2017: Annales de Dermatologie et de Vénéréologie
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
#17
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
#18
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
#19
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
#20
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
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