Prostate cancer and symptoms

Prostate is a small walnut size gland, which situated below bladder and in front of rectum. It is a male reproductive organ. The main function of prostate gland is forming and storing seminal fluid.
What is prostate cancer?
When cell of prostate gland multiplied uncontrollably, prostate cancer develops.
Prostate cancer is the second leading cause of death of males in the U.S.
It causes difficulty in urination, like frequent urination, increased urination at night, pain full urination, blood in urine, difficulties during sexual intercourse and causes erectile dysfunction.
As prostate gland situated just in front of rectum so when the tumour enlarges it put pressure on the urethra, thus flow of urine diminishes and urination becomes more difficult. Patients may also experience burning with urination or blood in the urine. As the tumor continues to grow, it can completely block the flow of urine, resulting in a painfully obstructed and enlarged urinary bladder.
It develops generally in men after age of fifty. In case of young men, it is rare but with advancing of age, the risk of prostate cancer becomes higher. The average age of diagnosis of prostate cancer is 70.
The exact reason of prostate cancer is still unknown, but it depends on age, race genetics, diet, lifestyle, medication.
Generally prostate cancer cant be detected in early stage because it has no symptom. Usually, the doctor first feels the nodule during a routine digital (done with the finger) rectal examination.