What is Perinephric mass?
Masses in the perinephric space, including the peripelvic space of the renal hilum, may be due to tumor, fluid, inflammation, or various proliferative diseases.
Where is the Perinephric?
The perinephric space, shaped as an inverted cone, sits between the anterior and posterior renal fasciae. It can play host to a variety of clinical conditions encountered daily in the reporting schedule for a radiologist.
What is Perinephric kidney?
The renal (Gerota) fascia surrounds the kidney and adrenal gland. Perinephric fat is present between the renal capsule and this fascia. The perinephric space also contains blood vessels and lymphatics, which facilitate the spread of infection.
What is the perirenal space?
The perirenal space is the largest of the three divisions of the retroperitoneum and is the most easily identified. It contains the kidneys, renal vessels, proximal collecting systems, adrenal glands and an adequate amount of fat to allow identification on CT scanning.
What causes Intrarenal AKI?
The most common causes of nonoliguric AKI are acute tubular necrosis (ATN), aminoglycoside nephrotoxicity, lithium toxicity, and cisplatin nephrotoxicity.
What causes Postrenal?
Postrenal causes typically result from obstruction of urinary flow, and prostatic hypertrophy is the most common cause of obstruction in older men. Prompt diagnosis followed by early relief of obstruction is associated with improvement in renal function in most patients.
What is the Perinephric and Paranephric fat?
There are two fat tissue layers covering the kidneys. The more superficial layer is called the perinephric (perirenal) fat lies between the renal fascia and the renal capsule and the deeper fat tissue layer which is also referred as the paranephric fat lies superior to the renal fascia.
What are perinephric and subcapsular masses?
More broadly, abnormal tissue at the periphery of the kidney may be subcapsular or perinephric in origin, and these processes are not always distinguishable, so the differential diagnosis for perinephric masses includes subcapsular disease.
What does perinephric mass on CT and MRI indicate?
Differential Diagnosis of Perinephric Masses on CT and MRI. Masses in the perinephric space, including the peripelvic space of the renal hilum, may be due to tumor, fluid, inflammation, or various proliferative diseases. More broadly, abnormal tissue at the periphery of the kidney may be subcapsular or perinephric in origin,…
What are the pathologies of the perinephric space?
A diverse assortment of pathologies can present within the perinephric space. The aetiology of disorders seen on radiological imaging can be attributed to solid tumours, both benign and malignant; fluid collections; inflammatory masses; or proliferative syndromes.
What causes focal solid masses in the perinephric space?
Focal solid masses in the perinephric space are most commonly due to malignancy, and differential considerations include tumour extension from renal, adrenal or retroperitoneal sources [29]. Open in a separate window Fig. 21