The actual fact is that the number of cells that make up the prostate gland has increased, not the size of the cells, so it should be named “prostate hyperplasia”. The actual fact is that the actual number of cells in the prostate gland has increased, so there is still the term “prostate hypertrophy”. The term “prostate enlargement” is a pathological term, while “prostate enlargement” is an anatomical concept. In the past, it was thought that the symptoms of prostate enlargement were caused by the enlarged prostate pressing on the urethra, but it is now known that this concept was too simplistic. In addition to the enlargement of the prostate, dynamic changes in the bladder outlet, degenerative changes in the forced urinary muscles (aging) due to aging, and bladder neuropathy due to obstruction are all closely related to urinary symptoms.