William C. Shiel Jr., MD, FACP, FACR
Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
Dennis Lee, MD
Dr. Lee was born in Shanghai, China, and received his college and medical training in the United States. He is fluent in English and three Chinese dialects. He graduated with chemistry departmental honors from Harvey Mudd College. He was appointed president of AOA society at UCLA School of Medicine. He underwent internal medicine residency and gastroenterology fellowship training at Cedars Sinai Medical Center.
- What is the prostate gland?
- What is prostate cancer?
- Why is prostate cancer important?
- What are prostate cancer causes?
- What are prostate cancer symptoms and signs?
- What are the screening tests for prostate cancer?
- What are false-positive elevations in the PSA test?
- What refinements have been made in the PSA test?
- How is prostate cancer diagnosed?
- How is the staging of prostate cancer done?
- What are the treatment options for prostate cancer?
- What about prostate cancer surgery?
- What about radiation therapy for prostate cancer?
- What about hormonal treatment for prostate cancer?
- What is cryotherapy for prostate cancer?
- What is HIFU for prostate cancer?
- What is chemotherapy for prostate cancer?
- What are the differences between hormonal treatment and chemotherapy?
- What about herbal or other alternative medicine treatments for prostate cancer?
- What is active surveillance for prostate cancer?
- Can prostate cancer be prevented?
- What will be the future treatments for prostate cancer?
- Prostate Cancer At A Glance
- Patient Comments: Prostate Cancer - Symptoms
- Find a local Oncologist in your town
What is the prostate gland?
The prostate gland is an organ that is located at the base or outlet (neck) of the urinary bladder. (See the diagram that follows.) The gland surrounds the first part of the urethra. The urethra is the passage through which urine drains from the bladder to exit from the penis. One function of the prostate gland is to help control urination by pressing directly against the part of the urethra that it surrounds. The main function of the prostate gland is to produce some of the substances that are found in normal semen, such as minerals and sugar. Semen is the fluid that transports the sperm to assist with reproduction. A man can manage quite well, however, without his prostate gland. (See the section on surgical treatment for prostate cancer.)
In a young man, the normal prostate gland is the size of a walnut (<30g). During normal aging, however, the gland usually grows larger. This hormone-related enlargement with aging is called benign prostatic hyperplasia (BPH), but this condition is not associated with prostate cancer. Both BPH and prostate cancer, however, can cause similar problems in older men. For example, an enlarged prostate gland can squeeze or impinge on the outlet of the bladder or the urethra, leading to difficulty with urination. The resulting symptoms commonly include slowing of the urinary stream and urinating more frequently, particularly at night. Patients should seek medical advice from their urologist or primary-care physician if these symptoms are present.
Next: What is prostate cancer?
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