hiperplazia

Hiperplazia is a medical term referring to the enlargement of an organ or tissue due to an increase in the number of cells. This is a cellular response to a stimulus and is considered a reversible adaptation. Unlike hypertrophy, which is an increase in cell size, hiperplazia involves an increase in the actual number of cells. This process is typically stimulated by hormonal changes or chronic irritation.

A common example of hiperplazia is seen in the prostate gland of older men, known as benign prostatic hiperplazia (BPH). This condition can lead to urinary symptoms due to the enlarged prostate pressing on the urethra. Another example is the thickening of the uterine lining (endometrium) during the menstrual cycle, which is a normal physiological process. However, sustained or excessive hiperplazia, particularly in hormone-sensitive tissues, can sometimes be a precursor to cancer, although hiperplazia itself is not cancerous.

The diagnosis of hiperplazia is usually made through physical examination, imaging techniques like ultrasound or MRI, and sometimes biopsy to examine the cells. Treatment depends on the underlying cause and the affected organ. In cases like BPH, medications or surgery may be used to manage symptoms. In cases where hiperplazia is associated with precancerous changes, more aggressive management might be necessary. Understanding the distinction between hiperplazia and other cellular changes like dysplasia or neoplasia is crucial in clinical practice.