Pediatric renal mass or xanthogranulomatous pyelonephritis?

A pediatric case of xanthogranulomatous pyelonephritis in the setting of Covid-19 and multi-system inflammatory syndrome (MIS-C)

“…Drainage of extrarenal abscesses prior to definitive surgical therapy may be used to reduce acute inflammation and potentially create a cleaner surgical field for nephrectomy as an attempt to mitigate post-surgical complications [ 36 , [77] , [78] , [79] , [80] ]. Biopsy prior to nephrectomy is generally avoided in the United States, based on the concern for Wilms tumor and the risk of upstaging in that setting [ 81 ].…”