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Multiple Choice

If organ rejection is suspected, what diagnostic procedure is typically performed to confirm?

Diagnosing graft rejection hinges on histologic examination of the transplanted tissue. A biopsy provides a tissue sample that pathologists evaluate for patterns of immune-mediated injury (such as lymphocytic infiltration and vascular inflammation) using established criteria, which confirms rejection and helps guide treatment. Imaging modalities like MRI, ultrasound, or CT can show structural changes or perfusion issues but cannot definitively distinguish rejection from other causes of graft dysfunction. A percutaneous graft biopsy, often guided by ultrasound, is typically performed to obtain the needed tissue, despite risks like bleeding, because it is the definitive test for confirming rejection.

Diagnosing graft rejection hinges on histologic examination of the transplanted tissue. A biopsy provides a tissue sample that pathologists evaluate for patterns of immune-mediated injury (such as lymphocytic infiltration and vascular inflammation) using established criteria, which confirms rejection and helps guide treatment. Imaging modalities like MRI, ultrasound, or CT can show structural changes or perfusion issues but cannot definitively distinguish rejection from other causes of graft dysfunction. A percutaneous graft biopsy, often guided by ultrasound, is typically performed to obtain the needed tissue, despite risks like bleeding, because it is the definitive test for confirming rejection.