Prostate cancer is a type of cancer that develops in the prostate, a small gland located in the male reproductive system. It is one of the most common types of cancer in men, and typically grows slowly over many years. Symptoms of prostate cancer may include difficulty urinating, blood in the urine, erectile dysfunction, and pain in the hips, back, or pelvis. Treatment options for prostate cancer may include surgery, radiation therapy, hormone therapy, chemotherapy, and immunotherapy. Early detection through screening tests such as the prostate-specific antigen (PSA) test can greatly improve the chances of successful treatment. Research in the field of prostate cancer focuses on developing more effective treatments, improving early detection methods, understanding the causes of the disease, and identifying risk factors.