Some authors have emphasized that emphysematous pyelonephritis is defined as gas within the renal parenchyma or perinephric space, but several other investigators define it as gas within the collecting system, parenchyma, perirenal space
, or all sites.
Perinephric abscesses may develop secondary to rupture into the perirenal space
or secondary to parenchymal necrosis.
Wunderlich's syndrome refers to spontaneous, non-traumatic renal bleeding into the subcapsular and/or perirenal space
There was focal fat stranding involving the perirenal space
Abdominal slices revealed air below both hemidiaphragms with a plethora of retroperitoneal air surrounding the perirenal space
CT findings of duodenal perforation include extraluminal air, segmental duodenal wall thickening, periduodenal fat stranding, collection of extraluminal air bubbles in the right perirenal space
, focal defect in the bowel wall with oral contrast extravasation and retroperitoneal abscess.
The EM in the perirenal space
, retroperitoneum or renal sinus may affect the kidney in many ways including causing local symptoms, such as abdominal pain (mass effect), obstructing the urinary tract (hydronephrosis), urinary tract infection and hematuria.
5 cm in maximal diameter and extending through Gerota's fascia with multiple nodular opacities in the pararenal and perirenal space
Infiltration of perirenal space
may extend to the pararenal space with irregular borders, thus will be given the name "hairy kidney".
These are (1) anterior pararenal space, (2) perirenal space
, and (3) posterior pararenal space.
After aspiration, fluid immediately reaccumulated in the perirenal space
Renal and perirenal space
involvement in acute pancreatitis: state-of-the-art spiral CT findings.