Assessment of renal size and its correlates in patients without known renal disease determined using Ultrasound at SPHMMC, Addis Ababa.

Abstract

Abstract Background: Many renal diseases can manifest with unilateral or bilateral changes in kidney size. To evaluate abnormalities in renal size, knowledge of standardized values for normal renal dimensions is essential as it shows variability in the values of normal renal size depending on body size, age. Ultrasound, being an easily available, noninvasive, safe and less expensive modality, is widely used for evaluation of renal dimensions and repeated follow-ups. Objective: - Our primary aim was to determine a normal range of values for renal dimensions in patients who came for abdominal ultrasound, having normal abdominal ultrasound study, no known renal disease and to correlate other parameters Methods: Facility based cross sectional Study was conducted at St. Paul Hospital Millennium Medical College, radiology department from Jun 2019 July 2019 in adult subjects with normal abdominal ultrasound and without any known renal disease. Renal length, width, depth and volume were obtained. Mean renal length, width, depth and volume were correlated with body mass index and other factors like age, gender, weight and height of the subjects. Result:- Total number of subjects included in this study was 438. Out of them 14 subjects had abnormal creatinine value and left the study. There were 240 females (56.6 %) and 184 were males (43.4%). The average renal length for the study group was 11.7 ± 1.5 cm and 11.7 ± 1.4 cm for right and left kidney respectively. The mean width of the right kidney was 3.8 ± 0.58 cm and left kidney was 3.8 ± 0.6 cm. The average right renal depth was 3.7 ± 0.47 cm and left renal depth was 3.81± 0.52 cm. Mean right kidney volume was 89.7 ± 30.5 cm³ and left kidney volume was 91.2 ± 31.8 cm³. Conclusion:- we can concluded that renal length, width, depth and volume has direct association with individuals’ height, weight and BMI as seen in most other studies. Left kidney is slightly larger than Right and larger renal sizes are seen bilaterally in males as compared to females as seen in most other studies.