Abstract               Background: Fetal kidney length has been studied and shown strongly to correlate with the gestational age in late trimester even in IUGR fetuses. Establishment of gestational age is crucial for obstetricians to plan further treatment of the antenatal patient. Estimation of gestational age of fetus is of great medicolegal Importance. Objectives: The aim of the study was to determine the morphometric development of renal parameters like length, width, and circumference during the fetal period. Material and Methods: The present study was conducted in the Department of Anatomy Kakatiya Medical College, Warangal, having sample size of 100. Foetuses utilized for the study are of gestation period ranging from 20 weeks to 40 weeks. Kidney length, width, and circumference were measured and recorded. Result: A significant and strong positive correlation was found between the crown rump length and gestational age with renal dimensions including length, width and circumference. Conclusion: Growth of kidney was seen to be proportional to gestational age and crown rump length. This will also contribute to imaging of fetal kidneys and detection of kidney abnormalities in intrauterine period and early interventions.

Key Words: Gestational age, Biperietal diameter, Correlation, Fetal kidney length.