Double kidney hypodense shadow is a descriptive term of imaging examination, usually refers to double kidney cysts, double kidney tumors and so on, once found need to seek medical treatment in time to determine the nature of hypodense shadow. Through the imaging examination found that the kidneys appear lower than the normal density of the kidneys of the occupation, usually can be called double kidney hypodensity shadow, which may be due to the two sides of the kidneys of cysts or tumors and other factors, so if the detection of double renal hypodensity shadow should go to the hospital to find out the cause as early as possible, and if necessary, can carry out enhanced CT examination or MRI examination to help determine the cause. In order to exclude the cause of tumor, pathological biopsy should be carried out, and the most easily manifested hypodense shadow in renal tumors, usually choose surgical resection treatment. Low-density shadow of both kidneys is recommended to consult regular hospitals in time and standardize the treatment under the guidance of physicians.