What is renal sinus lipomatosis?

Renal sinus lipomatosis is the accumulation of excessive nontumorous fatty tissue within the renal sinus. In the normal young adult, a thin layer of loose fatty tissue envelops the pelvocalyceal and vascular structures which traverse the sinus.

Does renal sinus lipomatosis cause hypertension?

Abstract. Fat in the renal sinus (RS), a region of the kidney in which low pressure venous and lymphatic vessels are present, may indirectly influence blood pressure.

What is the renal sinus?

The renal sinus is a central spacious cavity formed by the extension of the perinephric space into the deep recess located at the medial border of the kidney (,Figs 1, ,2). The renal sinus is surrounded by the kidney parenchyma laterally.

Is renal lipomatosis rare?

Renal replacement lipomatosis (RRL) is a rare and benign condition characterized by proliferation of renal sinus/hilar and perirenal fatty tissue with marked atrophy of the renal parenchyma. It is seen with calculus disease in 70% of cases and associated with chronic inflammation and hydronephrosis.

What causes fatty deposits on kidneys?

Angiomyolipomas are benign tumors of the kidney and, rarely, other organs. The exact cause of angiomyolipoma is not known, but researchers suggest a genetic mutation may be responsible. Angiomyolipomas are related to the genetic disease tuberous sclerosis.

What does increased echogenicity of kidney mean?

Increased echogenicity of the kidney parenchyma results from the increased presence of material that can reflect sound waves back, thus increasing its brightness on the ultrasonography image.

What fills the right kidney renal sinus?

The renal sinus is a fat-filled compartment of the kidney.

Where is the renal sinus located?

The renal sinus is a fatty compartment located within the medial aspect of the kidney. It communicates with the perinephric space. It contains the renal hilum and is bordered by renal parenchyma laterally.

What is the main function of renal sinus?

…the kidney known as the renal (kidney) sinus. The hilus is the point of entry and exit of the renal arteries and veins, lymphatic vessels, nerves, and the enlarged upper extension of the ureters.

Does the renal sinus transport urine?

The renal pelvis serves as the initial reservoir for urine, which flows into the sinus through the urinary collecting tubules, small tubes that open into the sinus at the papillae.

What is replacement sinus lipomatosis of the kidney?

replacement lipomatosis of the kidney this is is an advanced massive form of renal sinus lipomatosis, in which infection, renal calculi and long-standing hydronephrosis are accompanied by severe renal parenchymal atrophy, might be with mass effect causing attenuation and stretching of collecting system.

What are the symptoms of renal replacement lipomatosis?

Renal replacement lipomatosis is a rare condition characterized by fatty tissue proliferation in the renal sinus and perinephric space with marked destruction/atrophy of renal parenchyma (due to chronic inflammation). Patients usually present with non-specific complaints like flank pain, fever and weight loss.

What causes the proliferation of fat in the renal sinus?

Proliferation of sinus fat also occurs abnormally in association with processes causing destruction or atrophy of renal tissue and with increased exogenous or endogenous steroids (,1,,2 ). Renal sinus lipomatosis involves prominent fat proliferation that leads to mass effect on the intrarenal collecting system.

Which is a characteristic feature of renal sinus lipomatosis?

Often shows enlarged echogenic central sinuses. The central distribution of adipose tissue in the renal sinus is considered characteristic. Useful for confirming pure fat content. Possible differential considerations include: 1. Ginat DT, Bhatt S, Dogra VS. Replacement lipomatosis of the kidney: sonographic features.