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Cholesterol embolization in renal allografts.

M G Ripple¹, D Charney, T Nadasdy

¹Department of Pathology, The Johns Hopkins Hospital, Baltimore, Maryland 21287, USA.

Transplantation

|June 14, 2000

Summary

Renal cholesterol embolization (RCE) in kidney transplants is rare. If RCE originates from the recipient, graft survival is typically good; however, donor-origin RCE often leads to graft failure.

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Area of Science:

Nephrology
Transplantation Immunology
Vascular Pathology

Background:

Renal cholesterol embolization (RCE) in native kidneys has a poor prognosis.
RCE is an uncommon complication in renal allografts, often linked to recipient or donor atherosclerosis.

Observation:

A review of 1500 renal transplant biopsies identified 7 cases of RCE (0.47%).
In most cases, RCE originated from the recipient (6/7), with one case originating from the donor.
Literature review identified an additional 14 cases, totaling 21 cases for analysis.

Findings:

RCE of recipient origin was associated with good graft survival (9/11 functioning).
RCE of donor origin frequently resulted in graft dysfunction and failure (7/10 failed).
Donor-origin RCE complications included rejection and cytomegalovirus infection.

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Implications:

The origin of RCE significantly impacts renal allograft outcomes.
Donor-origin RCE may be more severe due to extensive embolization during procurement.
Understanding RCE origin is crucial for predicting graft survival in renal transplant recipients.