Retroperitoneum Spaces
What three organs are located in the anterior pararenal space?
What are the pancreas, duodenum, and ascending/transverse colon?
What is a urinoma?
What is an accumulation of urine outside the urinary tract?
A retroperitoneal hemorrhage may occur after which event?
What is trauma, bleeding disorder, or ruptured aneurysm?
What is an abscess?
What is a localized collection of pus caused by infection?
What does the term anechoic mean?
What is completely black with no internal echoes?
The perirenal space is surrounded by what fascia?
what fascia?What is Gerota’s fascia (anterior and posterior renal fascia)?
Name one common cause of a urinoma.
What is trauma, obstruction, or surgical injury?
An acute hemorrhage appears how on ultrasound?
What is anechoic or slightly echogenic?
Name two possible causes of an abscess.
What are surgery, trauma, or bowel perforation?
An acute hemorrhage appears mostly how on ultrasound?
What is anechoic or slightly echogenic?
Name two structures contained within the perirenal space.
What are the kidneys and adrenal glands?
Where are urinomas most commonly located?
What is around the kidney or upper ureter in the perinephric space?
What stage of hemorrhage shows septations and mixed echogenicity?
What is the subacute stage?
Gas within an abscess appears as what on ultrasound?
What are hyperechoic foci with dirty shadowing or reverberation?
A chronic hemorrhage may contain what two findings?
What are calcifications or scarring?
What are the main contents of the posterior pararenal space?
What are blood and lymph nodes?
On ultrasound, what does a urinoma usually look like?
What is a well-defined, anechoic or hypoechoic fluid collection?
What features are common in a chronic hemorrhage?
What are calcifications or scarring?
What does posterior acoustic enhancement in an abscess indicate?
What is fluid content?
What does posterior acoustic enhancement help identify?
What is a fluid-filled structure?
The perirenal space contains what kind of fat?
What is echogenic perinephric fat?
What finding suggests that a urinoma may be infected?
What are internal echoes within the collection?
What is the Doppler finding typically seen in a hemorrhage?
What is decreased or no flow?
What Doppler finding suggests inflammation around an abscess?
What is peripheral hyperemia?
What distinguishes an abscess from a hemorrhage sonographically?
What are internal debris, gas bubbles with dirty shadowing, and peripheral hyperemia?