Acquired cystic disease of the kidney in patients on hemodialysis.

Twelve adult patients undergoing hemodialysis for chronic renal failure due to noncystic causes were examined with ultrasonography to assess renal size and cystic changes. Seven of these were examined again one year later. Acquired cystic disease of the kidney was found to be present in ten patients and showed a direct relationship with duration of dialysis. This disease is not a static condition and may show progression or regression over time.