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Case report of a ureteral obstruction by Candida albicans fungus balls detected by magnetic resonance imaging in kidney transplant recipient.

In kidney transplant recipients, acute renal failure resulting from a ureteral obstruction by fungus balls is uncommon. We report a 60-year-old man diagnosed with ureteral obstruction caused by Candida albicans fungus balls early after transplant. Diagnosis was made by a T2-weighted magnetic resonance image, which demonstrated fungus balls as a low-intensity mass in the pelvis and microscopic examination findings in the urine. The patient was treated successfully with an antifungal agent and direct irrigation. It should be noted that fungus balls may cause ureteral obstruction of transplanted kidneys, possibly resulting in graft failure. Imaging of the kidneys and collecting system and aggressive debridement that adds to systemic therapy are necessary for early diagnosis and are central to a successful outcome.