Dimindra Karki^*, Ghizlane Yaakoubi, Beth Edelblute, Ahmed Aboumohamed^*

Canadian Journal of Urology, Vol.32, No.5, pp. 501-507, 2025, DOI:10.32604/cju.2025.063294 - 30 October 2025

Abstract Background: Epithelioid angiomyolipoma (EAML) is an uncommon renal tumor variant with histologic and radiologic features that can mimic renal cell carcinoma (RCC) on imaging due to the paucity of fat compared to the classic AML. EAML may exhibit aggressive behavior, including local invasion, recurrence, and distant metastases to the liver, lungs, and lymph nodes. Although recent reports suggest that up to one-third of EAML cases may behave malignantly, variability in diagnostic criteria and limited case series contribute to uncertainty regarding its true clinical course. Case Description: This case report describes a 19-year-old female presenting with an… More >

Shiyue Zhang¹, Xue Song^1,2, Jingying Wang^1,*, Wen Huang^3,*, Yue Zhou⁴, Mingrui Li¹

Molecular & Cellular Biomechanics, Vol.20, No.2, pp. 81-94, 2023, DOI:10.32604/mcb.2023.044445 - 01 November 2023

Abstract Pulmonary embolism (PE), caused by deep venous thrombosis (DVT), is a disease with high morbidity and mortality. Implantation of inferior vena cava filters is an important method for the clinical prevention of PE. The hemodynamic characteristics of filters implanted in the inferior vena cava (IVC) have a significant impact on their performance. However, IVC diameters vary among patients. This may have a direct impact on the hemodynamic properties of the filter. At present, there is no research on this kind of problem to be investigated. In this paper, the hemodynamic properties of the VenaTech convertible… More > Graphic Abstract

Adam M. Daily¹, Ryan P. Donahue^1,2, Semra Olgac³, Christian S. Kuhr¹, Paul M. Kozlowski¹

Canadian Journal of Urology, Vol.29, No.3, pp. 11187-11189, 2022

Abstract A 71-year-old woman with history of asthma presented with 2 months history of shortness of breath; on imaging an incidental left renal mass was noted. Subsequent renal protocol CT was obtained that showed a 4.5 cm left upper pole exophytic mass with renal vein thrombus extending into the inferior vena cava to the level of the caudate lobe concerning for renal cell carcinoma. She underwent an open left radical nephrectomy and IVC thrombectomy with subsequent postoperative pathology demonstrating xanthogranulomatous pyelonephritis without renal cell carcinoma. More >

Christopher P. Dall¹, Bradley R. Webster², Michael W. Helbig³, Mark W. Ball²

Canadian Journal of Urology, Vol.29, No.6, pp. 11394-11398, 2022

Abstract Abnormal inferior vena cava (IVC) anatomy may present unique challenges for urologists when performing retroperitoneal surgery. Duplication of the IVC is one such anomalous variation and can be found in up to 3% of the population. Misunderstanding of the implications of this aberrant anatomy may lead to intraoperative or postoperative complications. Here, we present two cases of patients undergoing renal surgeries with duplicate IVC. We then review the embryologic origin and anatomic findings in those with abnormal IVC anatomy as well as discuss the surgical implications and considerations for urologists. More >

Ling Sun^1,#, Chengcheng Pang^1,#, Xiaoyan Wang^2,#, Mingguo Xu³, Zhiwei Zhang^1,*, Shushui Wang^1,*

Congenital Heart Disease, Vol.17, No.2, pp. 201-214, 2022, DOI:10.32604/chd.2022.018453 - 26 January 2022

Abstract Background: Partial anomalous pulmonary venous connection (PAPVC) is frequently associated with atrial septal defect (ASD), especially sinus venosus defect (SVD). Although Waggstaffe described the pathology of SVDs in 1868, the exact anatomic features and the nature of SVD remains controversial. SVDs with no posterior atrial rim were observed in recent years. However, no studies suggested that absence of the residual posterior atrial septal tissue might be the key feature of SVD. The aims of this study were to investigate if absence of posterior rim of atrial septum played a crucial role in patients with SVD. Methods:… More >

Shi-Joon Yoo^1,2,*, Sanga Lee³, Regina de la Mora⁴, Ankavipar Saprungruang², Christoph Haller⁵, Lee N. Benson², Vladimiro Vida⁶, Alvise Guariento⁶, Christopher Z. Lam¹

Congenital Heart Disease, Vol.17, No.1, pp. 5-23, 2022, DOI:10.32604/CHD.2022.018728 - 26 October 2021

Abstract Sinus venosus defects include two varieties, superior and inferior sinus venosus defects. The superior sinus venosus defect is characterized by abnormal communication between two closely related venoatrial structures: 1) the normally positioned superior vena cava-right atrium complex and 2) the right pulmonary vein-left atrium complex that is displaced leftward, forward and upward. Inferior sinus venosus defects primarily involve the inferior vena cava-right atrial junction while the right pulmonary vein-left atrial junction can also be affected. Because of the rarity and wide variation of the defects, the morphological characterization of sinus venosus defects is inconsistent among More >

Yajuan Zhang, Jun Yan^*, Qiang Wang, Shoujun Li, Jing Sun, Shuo Dong, Jiachen Li

Congenital Heart Disease, Vol.16, No.4, pp. 383-392, 2021, DOI:10.32604/CHD.2021.015479 - 19 April 2021

Abstract Background: The long-term outcomes of patients treated with a Kawashima procedure and keeping the antegrade pulmonary blood flow (AnPBF) in single-ventricle (SV) and interrupted inferior vena cava (IVC) heart disease is still uncertain as yet. Methods: We investigated 18 patients who underwent the Kawashima procedure with SV physiology and an interrupted IVC between January 2009 and June 2018, perioperative, operative and postoperative characteristics were recorded. Results: A total of 18 patients underwent the Kawashima procedure at a median age of 2.7 years (range 0.5–24.7 years), of which 12 (66.7%) were male and 6 (33.3%) were female. The… More >

Kristen McAlpine¹, Stephen E. Ryan², Matthew Roberts¹, Humberto R. Vigil¹

Canadian Journal of Urology, Vol.27, No.2, pp. 10195-10198, 2020

Abstract Emphysematous pyelonephritis is a life-threatening, urologic emergency. We present the case of a 54-year-old female who was found to have a large volume of air in her renal vein and inferior vena cava from severe emphysematous pyelonephritis. In this case report, the medical and operative management of this patient are reviewed, and the literature on the management of emphysematous pyelonephritis is summarized. More >

Mark W. Ball, Michael A. Gorin, Gautam Jayram, Phillip M. Pierorazio, Mohamad E. Allaf

Canadian Journal of Urology, Vol.22, No.1, pp. 7666-7670, 2015

Abstract Introduction: To describe our technique for robot-assisted radical nephrectomy (RARN) with inferior vena cava (IVC) tumor thrombectomy and to present initial results for our first two patients.
Materials and methods: Two patients with renal masses with infrahepatic IVC extension underwent RARN with IVC tumor thrombectomy using a four-arm configuration. Both cases were right-sided tumors. Vascular control was obtained with complete cross-clamping of the vena cava with robotic bulldog clamps. Intraoperative ultrasound was used to delineate extent of tumor extension. Specimens were removed en-bloc, and the IVC was closed with 2-layers of 4-0 Prolene. The specimen is extracted… More >

Christopher M. Sherman¹, Sandhya R. Rao¹, Sriharsha Talluri¹, Amit J. Dwivedi², Murali K. Ankem¹

Canadian Journal of Urology, Vol.21, No.1, pp. 7160-7162, 2014

Abstract Inferior vena cava (IVC) filter penetration into the renal collecting system is an infrequent event. We report a case of IVC filter penetration into the right proximal ureter resulting in gross hematuria, hydronephrosis and stone formation. More >