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Citation:
Kecler-Pietrzyk A, Kearns C, Bell D, et al. Normal kidney size in adults. Reference article, Radiopaedia.org (Accessed on 13 Mar 2025) https://doi.org/10.53347/rID-53064
Normal kidney size in adults is closely related to height, but weight, body mass index (BMI), age, and ethnicity can also influence this 4.
Kidney dimensions are typically measured sonographically and used to calculate estimated volume. MRI and CT measurements have been shown to generally correlate well with ultrasonography 5,6.
The mean average pole-to-pole length of an adult human kidney is 10-13 cm. In general, the left kidney is slightly longer than the right.
When one kidney has reduced function or is absent, the other may undergo compensatory enlargement 7.
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5. Braconnier P, Piskunowicz M, Vakilzadeh N et al. How Reliable is Renal Ultrasound to Measure Renal Length and Volume in Patients with Chronic Kidney Disease Compared with Magnetic Resonance Imaging? Acta Radiol. 2019;61(1):117-27. doi:10.1177/0284185119847680 - Pubmed
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6. Cheong B, Muthupillai R, Rubin M, Flamm S. Normal Values for Renal Length and Volume as Measured by Magnetic Resonance Imaging. CJASN. 2006;2(1):38-45. doi:10.2215/cjn.00930306 - Pubmed
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7. van Vuuren S, van der Doef R, Cohen-Overbeek T, Goldschmeding R, Pistorius L, de Jong T. Compensatory Enlargement of a Solitary Functioning Kidney During Fetal Development. Ultrasound Obstet Gynecol. 2012;40(6):665-8. doi:10.1002/uog.11168 - Pubmed
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