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In bladder cancer (BC), the evaluation of lymph node (LN) involvement at preoperative imaging lacks specificity. Since neoangiogenesis is paired with lymphatic involvement, this study aims to evaluate the presence of perivesical venous ectasia as an indirect sign of LN involvement, together with other conventional CT findings. All the patients who underwent radical cystectomy (RC) for BC between January 2017 and December 2019 with available preoperative contrast-enhanced CT (CECT) within 1 month before surgery were included. Patients without available pathological reports (and pTNM stage) or who underwent neoadjuvant treatments and palliative RC were excluded. Two readers in blind assessed the nodal shape and hilum, the short axis, and the contrast enhancement of suspicious pelvic LNs, the Largest Venous Diameter (LVD) efferent to the lesion, and the extravesical tumor invasion. In total, 38 patients (33 males) were included: 17 pT2, 17 pT3, 4 pT4; pN+: 20/38. LN short axis > 5 mm, LN enhancement, and LVD > 3 mm were significantly correlated with N+ at pathology. LVD > 3 mm had a significantly higher sensitivity and specificity (≥90%, AUC = 0.949) and was an independent predictor ( p = 0.0016).

Introduction: Uretero-iliac artery fistulae (UIAF) are the consequence of chronic inflammatory events that create a fibrous and poorly vascularized uretero-vascular adhesion. They often occur in patients with a history of surgery, pelvic radiotherapy, and chronic ureteral stenting. The presentation is usually massive gross hematuria with acute anemia unto to hemorrhagic shock, representing a life-threatening condition. High mortality rate is reported (7-23%)., Materials and Methods: We present four cases in three patients, treated in our Institution from 2013 to 2018, and reviewed the published literature. UIAF was defined as the ratified presence of an abnormal communication between the ureter and any artery. In all patients, the UIAF was initially evaluated by contrast-enhanced computed tomography (CT) angiography. The management strategy was defined individually based on the specific risk profile of each patient., Results: In all cases, ureteral-iliac artery fistula occurred in female patients with previous surgery or radiation and with presence of indwelling ureteral stent. In every case the hematuria was massive and life-threatening. Diagnosis was delayed because of the poor diagnostic accuracy of CT scan, leading to over-treatment. Angiography resulted the best diagnostic tool. The endovascular treatment proved good outcomes in terms of early complications, with no case of mortality., Conclusions: In case of gross hematuria during ureteral stent change in female patients with history of previous pelvic surgery and radiation, UIAF must be suspected and immediately treated, since it represents a urological emergency. Angiography can be useful to confirm the diagnosis and endovascular treatment with vascular endoprosthesis is the best therapeutic option.