Lyon, Timothy D

Objectives: To characterize 30-day morbidity of upper ureteral reconstruction (UUR) and lower ureteral reconstruction (LUR) surgery by comparing open and minimally invasive surgery (MIS) approaches using a national surgical outcomes registry. Methods: The American College of Surgeons National Surgical Quality Improvement Program database was reviewed for patients who underwent UUR and LUR between 2007 and 2017. Primary endpoints included 30-day complications, transfusion, readmission, return to operating room (ROR), and prolonged postoperative length of stay (LOS). Multivariable logistic regression was performed to observe the association of MIS approach on 30-day outcomes. Results: Three thousand forty-two patients were identified with 2116 undergoing UUR and 926 undergoing LUR. Of 2116 patients undergoing UUR, 1733 (82%) were performed through an MIS approach. On multivariable analysis, open approach for UUR was associated with increased odds of any 30-day complication (odds ratio (OR) 1.6 [1.1–2.4]; p = 0.014), major complication (OR 1.8 [1.04–3.0]; p = 0.034), transfusion (OR 3.7 [1.2–11.5]; p = 0.025), ROR (OR 2.0 [1.0–3.9]; p = 0.047), and prolonged LOS (OR 5.4 [3.9–7.6]; p < 0.001). Of the 926 patients undergoing LUR, 458 (49%) were performed through an MIS approach. On multivariable analysis, open approach for LUR was associated with increased odds of any 30-day complication (OR 1.5 [1.1–2.1]; p = 0.028), minor complication (OR 1.7 [1.1–2.6]; p = 0.02), transfusion (OR 8.1 [2.7–23.7]; p < 0.001), and prolonged LOS (OR 4.2 [2.4–7.3]; p < 0.001). Conclusion: Utilization of a national surgical database revealed an open approach was associated with increased 30-day morbidity across multiple postoperative outcome measures. These findings suggest an MIS approach should be considered, when feasible, for upper and lower ureteral reconstruction.

Objective To investigate the prognostic significance of various patterns of extrarenal extension that comprise pathological stage T3a clear‐cell renal cell carcinoma (ccRCC) amongst patients undergoing nephrectomy for non‐metastatic disease. Patients and Methods A retrospective review of 563 patients who underwent radical nephrectomy for pathologically confirmed T3aN0/NxM0 ccRCC between 1970 and 2011 was performed. All pathological slides were re‐reviewed by one urological pathologist. Associations of patterns of extrarenal extension (perinephric fat [PF], renal sinus fat [SF], and renal vein [RV], in isolation or in any combination) with disease progression, cancer‐specific mortality (CSM), and all‐cause mortality were evaluated on multivariable analyses. Results Overall, PF invasion, renal SF invasion, and RV tumour thrombus were present in 144 (26%), 51 (9%), and 163 (29%) patients, respectively, with multiple patterns of extrarenal extension identified in 205 (36%) patients. There were no significant differences in survival outcomes for isolated involvement of PF, renal SF, or RV. However, patients with multiple patterns of extrarenal extension were at significantly increased risk of disease progression (hazard ratio [HR] 1.31, 95% confidence interval [CI] 1.04–1.65; P = 0.020), CSM (HR 1.64, 95% CI 1.27–2.12; P < 0.001), and all‐cause mortality (HR 1.32, 95% CI 1.08–1.61; P = 0.008). Conclusions The presence of multiple patterns of extrarenal extension is associated with a higher risk of disease progression and cancer‐related death after radical nephrectomy compared to isolated involvement of the PF, renal SF, or RV, which carry similar prognostic weight. If validated, these findings may help refine risk stratification of non‐metastatic T3a RCC by distinguishing patients with multiple vs one pattern of extrarenal extension.