The natural history of untreated BPH is variable and
unpredictable. There is little reliable information in the medical literature.
It is clear, however, that BPH is not necessarily a progressive disease.
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Many studies indicate that in up to 30% of patients symptoms may improve or
disappear over time. In ±40% of patients symptoms stay the same and in 30% of
patients symptoms get worse. ±10% of untreated patients will eventually develop
retention of urine. 10-30% of untreated patients eventually need surgery for
their prostatic enlargement.
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