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Updated: Mar 2, 2026

Non-invasive Imaging of Acute Allograft Rejection after Rat Renal Transplantation Using 18F-FDG PET
Published on: April 28, 2013
Gram-negative sepsis following biopsy of a transplant recipient with asymptomatic allograft pyelonephritis
Hassan Al-Khayyat1, Nigel Toussaint2,3, Steve Holt2,3
1Department of Nephrology, The Royal Melbourne Hospital, Grattan Street, Parkville, VIC, 3052, Australia. Hassan.Al-Khayyat@mh.org.au.
Abstract:
Pyelonephritis post-renal transplantation is common and in up to 50% of cases can be asymptomatic. Transplant pyelonephritis shares a lot of histopathological features with acute cellular rejection. We present a case of asymptomatic acute graft pyelonephritis where a renal biopsy was complicated by sepsis, and discuss the difficulties in interpretation of renal histology in the setting of transplant pyelonephritis where rejection may also be a possibility, but differentiation is challenging.
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