Urinary retention can sometimes becaused by prostate cancer. This is because the cancer can press on the urethra, the passage that moves urine from the bladder to the penis. It can also grow in such a way that urine cannot leave the bladder.
This page explains urinary retention in more detail and possible treatments.
Urinary retention is not just uncomfortable. It can cause a backflow of urine to the kidneys which can make them swollen. This can be uncomfortable and concerning.
In this situation, a urinary catheter (drainage tube) will be inserted into your bladder using the penis for access. The catheter will drain the urine off. Sometimes the catheter can be inserted through your abdomen (your middle) which is called a supra-pubic catheter. You can read more about how to care for a catheter here.
Your medical team may recommend an operation called a Trans Urethral Resection of the Prostate (TURP). This is performed by inserting a special surgical instrument through the urethra. The surgeon removes prostate tissue and this can make it easier to pass urine.
For more information on a TURP please see the following information from NHS Choices
