PD07-10 TUMOUR SEEDING IN THE TRACT OF PERCUTANEOUS RENAL TUMOUR BIOPSY. A REPORT OF SEVEN CASES FROM A UK TERTIARY REFERRAL CENTRE

INTRODUCTION AND OBJECTIVES:The role of percutaneous renal tumour biopsy (RTB) in the management of radiological indeterminate renal masses is long established. Patients with small renal masses with biopsy proven renal cell cancer (RCC) may be offered active surveillance, ablation or partial nephrectomy and RTB can provide diagnostic tissue for patients with metastatic disease who may be candidates for systemic therapy. Current guidelines suggest that tumour seeding of the tract of RTB is anecdotal and a coaxial technique should be used to avoid potential seeding of the biopsy tract.METHODS:Between January 2014 and September 2017 we have performed 585 renal tumour resections within our tertiary referral institution and 196 RTB have been performed. The renal tumour biopsy tract was carefully examined for macroscopically in the resection specimen and where found targeted when taking the histological blocks for microscopic assessment.RESULTS:We report seven cases in this series in whom RTB tract seeding has ...