The adrenal gland is an organ responsible for hormone secretion, and most adrenal tumors are benign. If the tumor does not affect the endocrine function of the adrenal gland, that is to say, the patient does not have any symptoms and the tumor is not harmful to human health, there is no need to remove it surgically. Some people worry about the sudden growth or malignancy of the tumor and want to take precautionary measures and operate while the tumor is still small, which is also unnecessary. Because benign adrenal tumor progresses very slowly and rarely appears to increase and deteriorate suddenly, at the same time, surgery itself will cause some damage to the body, so on balance, for relatively small (within 4 cm) and non-functional benign tumors, it is better not to operate and have regular review. Regular checkups do not need to be too frequent, but can be done during the annual physical examination. Of course, the adrenal gland examination is not included in the regular physical examination, so you can remind your doctor to do an additional ultrasound of the adrenal gland, or to observe the adrenal gland when doing CT or MRI of other organs. During the observation period, if there are symptoms such as uncontrollable increase in blood pressure, decrease in blood potassium, and obvious change in body shape and obesity, you should go to the hospital for a timely review to see if the tumor is starting to affect the endocrine function.