Whether the reduction of the length of both kidneys to 6cm is serious or not needs to be clarified by the cause of the disease and cannot be generalized. If it is congenital cause of bilateral kidney shrinkage, if the renal function is normal, it is usually not serious; if it is caused by chronic kidney disease and other pathologic causes of bilateral kidney shrinkage, with the development of the disease, it may progress to uremia, which is more serious at this time.
Normally, the length of adult is 10.5~11.5cm, width is 5~7.2cm, thickness is 2~3cm. therefore, the length of both kidneys 6cm suggests that the volume of both kidneys is reduced.
If the difference in the length of the kidneys on both sides of the patient is not more than 1.5cm, and even in some patients, the unilateral kidney is only about 6cm, this may be congenital renal atrophy. When doing ultrasonography, it is found that although the volume of the kidney is reduced, the overall structure of the renal cortex and medulla is clear, and there is no increased density of the renal cortex or unclear demarcation of the cortex and medulla, and other functions are normal, and this situation is usually not serious.
Reduced volume of both kidneys may also be caused by chronic kidney diseases, such as chronic renal failure, bilateral renal artery stenosis, etc. may cause the volume of the kidneys to shrink, and with the development of the disease, it may develop into uremia. This condition is more serious.
If you find that your kidneys are shrinking in size, it is recommended that you go to a regular hospital in time, complete the examination to clarify the cause of the disease, and then give targeted treatment under the guidance of the doctor.