What is a Perirenal mass?

Perirenal masses are an uncommon manifestation of malignant lymphoma. We report a 73-year-old patient who had this very unusual pattern of renal involvement in non-Hodgkin’s lymphoma.

Is CT or MRI better for renal mass?

MRI has been shown to be more sensitive to contrast enhancement for renal masses with indeterminate enhancement at CT. This is helpful in the case of papillary RCCs which can have low-level enhancement that may be missed at CT. Another advantage of MRI over CT in the assessment of enhancement is for calcified masses.

What does Perinephric stranding on CT scan mean?

Perinephric stranding refers to the appearance of edema within the fat of the perirenal space on CT or MRI.

What does heterogeneously enhancing mass mean?

“Heterogeneous enhancement” is non-uniform with variable signal intensity. “Rim enhancement” shows more pronounced enhancement towards the periphery than the center. “Dark Internal Septations” are non-enhancing lines within a mass; while “Enhancing Internal Septations” are enhancing lines within a mass.

Can angiomyolipoma be cancerous?

Angiomyolipomas are benign (not cancerous). Fat (adipose), smooth muscle and blood vessels make up these tumors. If the tumor grows too large, it may cause symptoms such as bleeding, anemia, fever and kidney pain.

How serious is an abscess on your kidney?

Kidney abscesses are potentially serious because the bacteria inside the abscess can spread to other parts of your body, such as your bloodstream or lungs, and can be fatal. Smaller abscesses can usually be treated with antibiotics through a drip. Surgery is usually required for larger abscesses.

What causes fat stranding?

Acute conditions that cause fat stranding include peritonitis; inflammation, infection, or ischemia of the bowel; perforation of colon cancer; inflammation associated with pancreatitis or cholecystitis; trauma; and surgery.

What is the function of perirenal fat?

The perirenal adipose tissue (PRAT), a component of visceral adipose tissue, has been recently recognized as an important factor that contributes to the maintenance of the cardiovascular system and kidney homeostasis.

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. It also contains the perinephric bridging septa…

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 is the perirenal space of retroperitoneum?

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. It also contains the perinephric bridging septa of Kunin 5.

What is the anatomy of the perineum?

It contains the kidneys, renal vessels, proximal collecting systems, adrenal glands and an adequate amount of fat to allow identification on CT scanning. It also contains the perinephric bridging septa of Kunin 5.