Benign hyperplasia is a condition in which an organ grows larger than normal due to an increase in the number of its cells, without any cancerous changes. The most well-known example is benign prostatic hyperplasia, or BPH, in which the prostate gland enlarges in older men and can obstruct the flow of urine from the bladder. On ultrasound, an enlarged prostate may appear rounded and bulging into the base of the bladder, and the post-void residual urine volume is often measured to assess how effectively the patient can empty their bladder. Benign hyperplasia can also occur in other organs, such as the endometrium and the thyroid gland.
Sonography Term