Cyst infection in acquired renal cystic diseaseCystic degeneration of the kidney in patients with advanced renal failure is common'; whether cysts can harbour infection remains to be shown.2 We report on three cases of infected cysts in acquired renal cystic disease.
Case reportsCase I-A 60 year old man was admitted to hospital because of uraemia, hypertension, recurrent fever, and leucocytosis. The plasma concentration of creatinine was 821 !umol/l, and a urine culture was positive for Escherichia coli. Ultrasonography showed normal sized hyperechogenic kidneys with more than three 1-2 cm cysts in each. There was a 6 cm cyst that was hyperechogenic at the upper pole of the left kidney. Renal computed tomography confirmed the presence of bilateral multiple cysts. A thick wall, enhanced by contrast infusion, was seen around a slightly dense cyst on the upper pole of the left kidney (figure).
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