Horseshoe Kidney
Horseshoe kidney is the most common renal fusion abnormality characterized by fusion of one pole of each kidney, typically the lower pole. The connection or the isthmus lies in the […]
Massive lymphocele associated with renal allograft hydronephrosis
Approximately 3 weeks after deceased donor kidney transplantation, a patient developed oliguric renal failure. Renal sonogram demonstrated moderate hydronephrosis of the renal allograft secondary to compression of the transplanted ureter […]
A case of bilateral hydronephrosis
A young woman presented with abdominal pain that did not get better with empiric antibiotic therapy for presumed urinary tract infection. Renal sonogram revealed bilateral mild to moderate hydronephrosis. There […]
Retroperitoneal lymphoma
Here is a renal sonogram obtained from an elderly woman demonstrating bilateral hydronephrosis as well as a heterogeneous mass encasing the left kidney. CT scan of the abdomen included for […]
Maternal Physiologic hydronephrosis in Pregnancy
Pregnancy-related hydronephrosis, more precisely physiologic maternal renal pelvis dilatation is common and the incidence is estimated to be as high as 80%. The dilatation of the pelvis and ureter typically […]
Renal abscess
A middle-aged man with diabetes mellitus type 2 presented with fever, chills and malaise. Urinalysis revealed pyuria and was positive for nitrite. Renal sonogram demonstrated a heterogeneous mass-like structure in […]
Renal angiomyolipoma
A classic angiomyolipoma (AML) has abundant fat and therefore appears hyperechoic on a sonogram, similar to the sinus fat. Acoustic shadowing may be seen in up to a 3rd of […]
Renal milk of calcium cysts
Renal milk of calcium refers to the viscous colloidal suspension of calcium salts found either within a calyceal diverticulum or within a simple renal cyst. Unlike stones, milk of calcium […]
Hypertrophic column of Bertin
The renal column of Bertin is a medullary extension of the renal cortex in between the renal pyramids. Hypertrophic column of Bertin (HCB) is a normal variant that appears as […]