European Association of Urology COVID intermediate prioritisation group is poorly predictive of pathological high-risk among patients with renal tumours

ABSTRACT

Introduction & Objectives: The purpose of prioritisation is to minimise harm while safeguarding access to health care in times of reduced clinical resources. The EAU Guideline Office Rapid Reaction Group (GORRG) issued priority recommendations for use during the COVID-19 pandemic. We evaluated if the clinical prioritisation for suspected renal cell carcinoma (RCC) planned for surgery matched final pathological risk. Materials & Methods: From 23 March 2020 at the beginning of the first lock-down in the UK, patients with suspected RCC were prioritised according to GORRG recommendations until 10 October 2020. To increase statistical power, GORRG prioritisation was also retrospectively assigned to pre-lockdown RCC surgical cases, dating back to April 5 2019. Patient and tumour characteristics were assessed, as was priority group according to GORRG, TNM, and postoperative risk according to 2003 Leibovich scores. We assessed concordance between pre-operative GORGG prioritisation group and post-operative risk, and if stratification could be further improved by subgrouping of size. Results: 351 patients with suspected RCC were prioritised and underwent surgery, of which 16 were benign and 335 were RCC after specimen analysis. The intermediate priority group did not match the pathological risk group in 47.7%, with 25.7% and 16.4% of the group being pathological low and high risk, respectively. The low GORRG priority group harboured 14.9% intermediate and 1.06% high risk RCC, and the high GORRG priority group 27.9% intermediate and no low risk RCC respectively. Within the GORRG intermediate group, 34.2% of cT1b tumours were low risk, and 32.3% of cT2a tumours high risk. Analysing at 1 cm increments, 45.1% of 4-5cm tumours were low risk. The area under the receiver operating characteristics curve for priority groups in predicting matched postoperative risk group was 0.60 (95% CI 0.55-0.65). The sankey diagram shows patients categorised according to EAU GORGG guidelines (left) and pathological risk (right).(Figure Presented)Conclusions: The recommended prioritisation system can be error prone and should be prudently applied based on the centre’s needs. Particularly amongst the intermediate group, centres with clinical capacity should not defer intervention of cT2a tumours for longer than absolutely necessary and in severely limited resources may consider intermediate priority tumours <5cm as low priority.