Patient's question:
June 7, 2013 BC showed biparietal diameter 92mm, fetal heart rate 144 times per minute. The left kidney of the fetus was approximately 4718mm, with dilated renal pelvis and calyces, anterior-posterior diameter of about 10mm, showing a mottled change, with the thinner cortex about 5mm posteriorly. The right kidney of the fetus was approximately 4220mm, with dilated renal pelvis and calyces, anterior-posterior diameter of about 9mm, with the thinner cortex about 4mm posteriorly. A tubular anechoic area of approximately 5611 was observed in the abdomen, ,,,, Visited the Maternal and Child Health Hospital in our county.Doctor's answer:
The collecting system of a normal fetal kidney can be classified as mildly separated, with a separation diameter of up to six millimeters. After 30 weeks of gestation, hydronephrosis is diagnosed if the renal pelvis dilation is greater than or equal to 10 millimeters or if there is dilatation of the calyces. Hydronephrosis is divided into two types: one is reversible, with an accumulation width of 1.01-1.63 centimeters, relatively thick renal parenchyma (1.02-0.58 centimeters), and the hydronephrosis disappears after the fetus is born due to changes in the external environment. It is commonly associated with a large amount of urine filling the fetal bladder or ureteral dysrhythmia caused by certain reasons.