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Risks of prostate surgery are similar to those with any major surgery:
Reactions to anesthesia
Bleeding from the surgery
Blood clots in the legs or lungs
Damage to nearby organs
Infections at the surgery site
If lymph nodes are removed, there is a risk of a condition called lymphedema which is a pooling of lymphatic fluid in the arms or legs.
The main side effects related to prostate removal surgery are urine leakage and loss of erections. Urinary continence usually returns with several weeks. Erections may take up to 2 years to return, but there are medications and other options to help.