Renal Pelvis & Ureter
A Novel Technique of Traction Pre-Bladder Suturing in Single-Position Robot-Assisted Nephroureterectomy: Simplifying the Management of the Intramural Ureter.
Xu J, et al
A novel four-step traction pre-bladder suturing technique for robot-assisted laparoscopic nephroureterectomy (RALNU) proved feasible and safe in all 10 consecutive patients with early-stage upper tract urothelial carcinoma (UTUC) treated between October 2022 and August 2023. The procedure achieved a…
Source →Urothelial carcinoma of the renal pelvis and ureter with shadow cell morphology: report of a case
Chen SM, et al
A case report published in the Chinese Journal of Pathology describes an unusual presentation of urothelial carcinoma of the renal pelvis and ureter exhibiting shadow cell morphology, a histological feature rarely documented in tumours of the upper urinary tract. Shadow cell differentiation, more co…
Source →Perioperative and survival outcomes of synchronous vs. metachronous upper tract urothelial carcinoma among bladder cancer patients treated with radical cystectomy and nephroureterectomy: Results from an International Multicenter Collaborative Study-On behalf of the Young Academic Urology (YAU) Urothelial Working Group.
Corvino R, et al
A multicenter retrospective study of 177 bladder cancer patients requiring both radical cystectomy (RC) and radical nephroureterectomy (RNU) found that synchronous upper tract urothelial carcinoma (UTUC) is associated with significantly worse perioperative and survival outcomes compared to metachron…
Source →Spatial atlas of upper tract urothelial carcinoma identifies SLC14A1 + and S100A8/9+ tumor cells as key determinants of malignant progression.
Liu J, et al
A new spatial atlas of upper tract urothelial carcinoma (UTUC) has identified two opposing tumor cell subpopulations — SLC14A1⁺ cells linked to favorable clinical prognosis and S100A8/9⁺ cells associated with poor outcomes — as central regulators of disease progression. Using integrated single-cell …
Source →Intraoperative indocyanine green fluorescence guidance to reduce ureteroenteric anastomotic strictures during robot-assisted radical cystectomy. A systematic review and meta-analysis.
Nominato EO, et al
A systematic review and meta-analysis of four observational studies enrolling 886 patients (1,739 ureters) found no statistically significant reduction in ureteroenteric anastomotic strictures with indocyanine green (ICG) fluorescence guidance during robot-assisted radical cystectomy, yielding a poo…
Source →Lynch syndrome-associated urothelial carcinoma: clinical and molecular findings from a single-institution cohort.
Rametta A, et al
A retrospective single-center study of 27 patients with Lynch syndrome-associated urothelial carcinoma (LS-UC) found that FGFR3 mutations were present in 67% of evaluable tumor samples, with the specific hotspot mutation p.Arg248Cys identified in 55% of cases — a notably high prevalence compared to …
Source →Immune-Checkpoint-Inhibitor-Related Bullous Pemphigoid During Avelumab Maintenance Therapy in a Patient With Metastatic Renal Pelvic Carcinoma: A Case Report.
Nara T, et al
A 76-year-old man undergoing avelumab maintenance therapy for recurrent renal pelvic carcinoma developed bullous pemphigoid — a rare immune-related skin adverse event — just 20 days after the first dose, marked by pruritic erythema, tense blisters, eosinophilia, elevated IgE, and markedly raised ant…
Source →Renal Pelvis Epidermoid Cyst Mimicking Staghorn Calculus: Successful Treatment with Percutaneous Approach (PCN).
Pakmanesh H, et al
A renal pelvis epidermoid cyst — an extremely rare benign lesion — was successfully diagnosed and treated in a 67-year-old diabetic woman using percutaneous nephrolithotomy (PCNL), representing only the second reported case worldwide managed with this minimally invasive percutaneous approach. Pre-op…
Source →Influence of Anatomical Variations due to Horseshoe Kidney on Colorectal Cancer Surgery.
Urashima T, et al
A retrospective study of 13 colorectal cancer patients with horseshoe kidney found that aberrant renal arteries were present in 69.2% of cases and aberrant renal veins in 84.6%, with 38.5% of patients having aberrant renal veins coursing near the inferior mesenteric artery — a critical anatomical ha…
Source →Upper tract urothelial carcinoma arising in a horseshoe kidney with ureteropelvic junction obstruction: a case report.
Chaabouni A, et al
A 66-year-old man was diagnosed with upper tract urothelial carcinoma (UTUC) arising in a horseshoe kidney complicated by longstanding ureteropelvic junction obstruction, producing a massive hydronephrosis measuring 50 × 46 × 28 cm — an exceptionally rare clinical constellation. Computed tomography …
Source →AI-powered semantic segmentation model for enhanced ureteral mapping and real-time instrument feedback in robotic colorectal surgery.
Bader JM, et al
Researchers developed a deep learning model for real-time ureter identification and instrument-proximity warnings during robotic colorectal surgery without the use of contrast agents such as indocyanine green, achieving a mean average precision (mAP) of 0.8821—well above the typical real-world range…
Source →Incidence of Germline Genetic Variants in Patients with a Urinary Tract Cancer and Association with Outcomes.
Kamau K, et al
A new study found that 9.3–9.5% of unselected patients with urinary tract cancer (UTC) harbor pathogenic or likely pathogenic germline variants in cancer predisposition genes, and current clinical guidelines miss more than one-third of these carriers. The retrospective study analyzed 273 patients an…
Source →Case Report: Dose-escalated volumetric modulated arc therapy achieving bowel and renal protection for large retroperitoneal inflammatory myofibroblastic tumor invading ureter and inferior vena cava.
Zhang J, et al
Dose-escalated volumetric modulated arc therapy (VMAT) achieved a complete radiographic response at one month in a 59-year-old woman with a large, unresectable 9.2 cm retroperitoneal inflammatory myofibroblastic tumor (IMT) invading the right ureter and inferior vena cava, with the patient remaining…
Source →Optimal bladder cuff management in radical nephroureterectomy: A multicenter retrospective cohort study comparing one-position excision versus ureteral pluck technique.
Li J, et al
A multicenter retrospective study of 169 patients with upper urinary tract urothelial carcinoma found that a novel one-position bladder cuff resection technique (nRNU) significantly outperformed the conventional ureteral pluck technique (UPT) in both surgical efficiency and oncological outcomes. Pat…
Source →Primary adult renal pelvic soft tissue giant cell tumor: A rare case report.
Ou Y, et al
Clinicians are urged to consider renal pelvis soft tissue giant cell tumor in differential diagnoses following a rare case report of a 72-year-old male who died of aggressive disease progression 15 months after radical nephroureterectomy. The patient initially presented with right-sided low back pai…
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