Kidney hump, no need to jump!
Diagnosis?
Diagnosis?
A 58-year-old man with a history of hypertension, obstructive sleep apnea, and mildly elevated serum creatinine
👉underwent renal ultrasonography for evaluation of kidney size and structure
👉underwent renal ultrasonography for evaluation of kidney size and structure
The scan reported no structural abnormalities except for a “protuberance” in the left kidney
👉 for which Nephrology input was sought
👉 reassured that this was a benign finding called “dromedary hump”
👉 no follow-up imaging was indicated.
👉 for which Nephrology input was sought
👉 reassured that this was a benign finding called “dromedary hump”
👉 no follow-up imaging was indicated.
Dromedary hump is a prominent focal bulge on the lateral border of the left kidney caused by splenic impression, which can mimic renal neoplasm.
👉 benign anatomic variant
same imaging characteristics as adjacent renal cortex with normal blood flow pattern on Doppler sonograp
👉 benign anatomic variant
same imaging characteristics as adjacent renal cortex with normal blood flow pattern on Doppler sonograp
The incidence of this normal anatomic variant is estimated to be about 0.5%.3
It can sometimes mimic a kidney neoplasm and therefore considered a “renal pseudotumor
It can sometimes mimic a kidney neoplasm and therefore considered a “renal pseudotumor
The hump demonstrates the same echogenicity as adjacent normal renal parenchyma on the sonogram
👉unlike renal cell carcinoma, which typically appears as a heterogeneous mass with areas of necrosis, cystic changes, and hemorrhage
👉unlike renal cell carcinoma, which typically appears as a heterogeneous mass with areas of necrosis, cystic changes, and hemorrhage
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