I. What is the prostate gland? The prostate gland is a male-specific gonadal organ, shaped like a chestnut, generally divided into five lobes: the anterior lobe, the middle lobe, the posterior lobe and the two lateral lobes, with the urethra running through the middle. What are the common diseases of prostate? Common diseases include prostatitis, prostate hyperplasia and prostate cancer. What are prostate hyperplasia and prostate cancer? 1. Prostate hyperplasia is the hypertrophy of prostate gland especially caused by overgrowth of the middle lobe. After the age of 40, the incidence of prostate hyperplasia tends to rise gradually with the increase of age. At present, it is believed that it is caused by the imbalance of the balance of androgen and estrogen in the body, and according to statistics, 80% of the patients above the age of 80 can be affected. Prostate cancer is a malignant tumor that occurs in the prostate gland, the cause of which is unknown and often occurs insidiously, making it difficult to be detected at an early stage. Common clinical manifestations of prostate hyperplasia and prostate cancer Prostate hyperplasia is a benign disease, but when the lesion develops to a certain degree, it can also cause corresponding clinical symptoms, such as frequent urination, urinary urgency, urinary pain, difficulty in urination, hematuria, urinary incontinence, urinary waiting, perineum, perineum, lumbosacral discomfort, etc. Even hypogonadism and generalized weakness can occur. In some patients, when the difficulty in urination is serious, complete obstruction of the urinary tract may occur, which seriously affects the quality of life of patients. Prostate cancer: early stage may not have any clinical manifestations, middle and late stage may appear similar to prostate hyperplasia related manifestations as well as tumor invasion of surrounding tissues and distant metastasis manifestations, such as hematuria, bone metastasis and so on. V. Diagnostic methods of prostate disease: At present, there are many methods used for auxiliary diagnosis, such as blood biochemical examination, anal fingerprinting, rectal and pelvic ultrasound, magnetic resonance imaging (MRI), cystourethroscopy, prostate biopsy, isotope nephrography, etc. Biopsy pathology is the most common method for diagnosis. Biopsy pathology is currently the commonly used gold standard for diagnosis. The combination of multiple methods helps to determine the extent of the lesion.