Overview
The prostate is a gland in the male reproductive system. About the size of a walnut, it sits below the bladder, in front of the rectum, and surrounds the urethra. It releases prostatic fluid, which contributes to the formation of semen. Prostate cancer forms in tissues of the prostate.
Men who are at normal risk should have an annual prostate exam starting at age 50. Men with higher risk (family history or African American) should start around age 40.
Causes of Prostate Cancer
Exact causes of prostate cancer are unknown, though genetics, inflammation and environmental factors such as diet and smoking likely play a role. Men older than 65 and/or with an immediate family history of prostate cancer are at greater risk, as are African American men. Obesity also increases the risk of prostate cancer.
Symptoms of Prostate Cancer
Prostate cancer usually causes no symptoms unless it has spread outside the prostate, but some patients may experience:
- Difficulty starting or stopping urine flow
- Increased urinary frequency, particularly at night
- Weak urine flow
- Blood in the urine or semen
- Pain in the lower back, hips or upper thighs
Diagnosing Prostate Cancer
A urologist performs a detailed history and physical exam, including a variety of tests:
- Digital rectal exam: To get a general idea of the size and condition of the gland, the doctor inserts a lubricated, gloved finger into the patient’s rectum and feels the prostate through the rectal wall.
- Blood test: Blood sample reveals the level of prostate-specific antigens (PSA) in the blood.
- MRI: A magnetic resonance imaging (MRI) scan is a common procedure that uses a strong magnetic field and radio waves to create detailed images of the organs and tissues within the body.
- PSMA PET/CT Scan: A prostate-specific membrane antigen (PSMA) PET/CT scan is an imaging test used to detect and locate prostate cancer. It is particularly useful for:
- Detecting prostate cancer that has spread to other parts of the body (metastasis)
- Monitoring the effectiveness of treatments for prostate cancer
- Planning treatment for newly diagnosed or recurrent prostate cancer
Early detection means more options for treatment and an increased chance of survival:
- A recent study from the University of Gothenburg concludes that PSA tests reduce prostate cancer deaths by about 30%.
If test results are abnormal, the urologist may advise:
- Transrectal ultrasound: A rectal probe identifies abnormal areas of the prostate.
- Transrectal biopsy: A biopsy needle passed through the rectum gathers a tissue sample to detect cancer cells.
- MRI fusion biopsy: MRI/ultrasound fusion technology uses MRI images and targets abnormal areas that have been identified on those images. While performing the biopsy, the urologist will then have the annotated images of the MRI with the suspicious areas marked on these images available on his/her monitor. These images will then be fused with the real-time transrectal ultrasound image of the prostate. This subsequently allows an MRI-targeted sampling of suspicious areas, under ultrasound guidance.
Learn more about a prostate biopsy. Download Prostate Biopsy What it Means and What to Expect: A Guide for Patients.
Stages of Prostate Cancer
The Gleason score and tumor stage are used together to predict prognosis and help guide therapy.
The Gleason score is a description of the aggressiveness of the cancer cells and is assigned based on the microscopic appearance of the cancer cells. The Gleason score ranges from 2 (least aggressive) to 10 (most aggressive) and is based on prostate cancer cells’ microscopic appearance.
The tumor stage, however, describes how the cancer was detected and the extent of the cancer in the body. The tumor stage will not be indicated on a prostate biopsy report, but will be described by your doctor.
- Stage I: Cancer is limited to the prostate.
- Stage II: The tumor is more advanced but has not spread outside the prostate.
- Stage III: The tumor has been detected in organs next to the prostate, extending into the seminal vesicles (a gland behind it that helps produce semen), sphincter (muscles that control urine flow), bladder, rectum or wall of the pelvis.
- Stage IV: The tumor has spread beyond the prostate into the lymph nodes or other organs including bones.
Treating Prostate Cancer
Every prostate cancer patient is different. That’s why we take the time to carefully consider each patient’s situation before determining the approach that is best.
Treatment Options for Local Growth – Stages I and II
Active Surveillance
This approach is considered if your cancer is small, expected to grow very slowly, confined to one area of your prostate, and isn’t causing symptoms. It involves frequent urological exams to monitor the cancer, and may include regular PSA tests, digital rectal exams, and repeat biopsies of prostate tissue.
Radiation
There are several types of radiation to consider:
- Stereotactic body radiation therapy (SBRT): Delivers high doses of radiation in a small number of treatment sessions – five outpatient sessions on consecutive days or over a two-week period.
- External or image-guided radiation (IMRT or IGRT): Uses two- and three-dimensional imaging to direct radiation to the precise location of the cancer.
- Brachytherapy: Seeds containing radioactive material are inserted directly into the prostate. Learn more about radiation.
Extra Protection During Radiation.
We take these extra steps during radiation to ensure your safety and prevent damage to tissue surrounding the cancer:
- Ethos™ Adaptive Radiation Therapy: This new technology allows your oncology team to make adjustments to your radiation plan before each session begins. Adaptive Radiation Therapy ensures the most accurate placement of radiation while protecting nearby healthy tissue. It takes a personalized approach to each patient’s situation to more effectively treat the cancerous tumor while ensuring less risk to adjacent tissue. Learn more.
- Rectal Spacers: Since the prostate and rectum are nearly touching each other, a rectal spacer is often used to create a physical separation. This reduces the chance of radiation exposure to the rectum and other normal tissues. The spacers minimize short-term side effects such as bowel urgency, bleeding, or irritation. After radiation the spacer naturally dissolves or is absorbed by the body. Your doctor will discuss whether one of these types of rectal spacers is right for you: SpaceOAR™ Hydrogel, Barrigel®, BioProtect™ Rectal Balloon Spacer.
Surgery
Robotic surgery: Minimally invasive surgery using the da Vinci® Surgery System which is the most common surgical treatment for prostate cancer.
Open surgery: Prostate removal through a cut in the abdomen or an incision between the prostate and the anus.
Treatments for metastatic growth (stages III and IV):
Hormone therapy: Blocks the patient’s production of testosterone to slow the cancer’s growth or cause it to shrink.
Immunotherapy: Stimulates the patient’s immune system to fight the cancer cells. This includes chemotherapy, radiation, surgical removal of the tumor, and more recently developed immunotherapies that use your body’s own immune system to attack cancer cells.
Chemotherapy: Medication or a combination of medications given to patients whose cancer has spread and no longer responds to hormone therapy.
Advanced Prostate Cancer Clinic
For men whose cancer has progressed, the Advanced Prostate Cancer Clinic provides additional alternatives and support.

