Renal dromedary hump
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Ultrasonography of the left kidney showing a "Dromedary hump".
Dromedary hump and Bertini columns are two of the renal pseudotumours.
The term “dromedary hump” or “splenic hump” refers to a bulge in the middle of the lateral surface of the left renal cortex. It is usually created by the pressure of surrounding organs to the cortex of the kidney during development. Although it may resemble to a mass, thorough examination reveals that its echogenicity is similar to that of the rest of the renal parenchyma and calyces extend normally into it.
Color Doppler ultrasonography demonstrates a normal blood flow within this structure 1-5. The same finding can also be shown with e-FLOW and Contrast-enhanced Ultrasonography 4. As dromedary humps represents normal renal tissue, its imaging findings are the same with the rest of the renal cortex in all imaging modalities 5.
- 1. Siegel MJ. Pediatric sonography 4th Ed. Philadelphia, Lippincott Williams & Wilkins 2011 p390
- 2. Meire H, Cosgrove D, Dewbury K, Farrant P. Clinical ultrasound a comprehensive text. Abdominal and General Ultrasound. 2nd Ed. Vol. 2 London, Edimburg, New York, St Luis, Sydney, Toronto Churchill Livingstone 2001, p 522
- 3. McGahan JP, Goldberg BB. Diagnostic Ultrasound 2nd Ed. p.835 - 836
- 4. Quaia E. Radiological Imaging of the Kidney. Berlin, Heidelberg Springer 2011, P 38-41
- 5. Dyer RB, Chen MY, Zagoria RJ. Classic signs in uroradiology. Radiographics. 2004 Oct;24 Suppl 1:S247-80.