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Query: UMLS:C0034186 (pyelonephritis)
 6,144 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Replacement lipomatosis of the kidney is the end result of severe atrophy of renal parenchyma with secondary marked proliferation of renal sinus and perirenal fatty tissue. Although ultrasonography may suggest the diagnosis, CT demonstrated the distinctive features most accurately. We report a case of renal replacement lipomatosis with coexistent xanthogranulomatous pyelonephritis and multiple perinephric and parietal wall collections.
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PMID:Renal replacement lipomatosis: A rare type of renal pseudotumor. 2083 24

Renal replacement lipomatosis of the kidney is a rare entity characterized by renal sinus and perirenal fat proliferation often caused by renal calculi. Most of the renal parenchyma is replaced by fat and the kidney is usually small, atrophic and nonfunctioning. We report magnetic resonance imaging and ultrasonography findings of a pregnant woman with xanthogranulomatous pyelonephritis and renal replacement lipomatosis coexisting in the same kidney.
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PMID:Renal replacement lipomatosis with coexisting xanthogranulomatous pyelonephritis in a pregnant woman. 2172 87

Renal replacement lipomatosis (RRL) is a rare condition that occurs as an end result of renal atrophy or destruction of renal parenchyma by excessive lipomatous tissue in renal sinus and perinephric space. We report a case of RRL presenting as a right renal mass clinically. Intra-venous pyelography and renal scan revealed a left non-functioning kidney. A left nephrectomy was performed. After histopathological examination and extensive literature search, a diagnosis of RRL was given. In majority of cases, it is associated with renal calculi. Idiopathic variety is not common. It is a rare entity and the diagnosis may be missed due to lack of experience. It has to be differentiated from other fat-containing tumors such as renal lipoma, xanthogranulomatous pyelonephritis, angiomyolipoma and liposarcoma.
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PMID:Idiopathic renal replacement lipomatosis: a rare renal pseudo tumor. 2502 15

Renal replacement lipomatosis is a condition characterized by varying degrees of renal parenchymal atrophy and perirenal fibrofatty proliferation secondary to chronic inflammation such as xanthogranulomatous pyelonephritis. In severe cases, imaging findings can be misdiagnosed as retroperitoneal liposarcoma.
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PMID:Extensive renal sinus lipomatosis in xanthogranulomatous pyelonephritis simulating liposarcoma. 2952 92

Acute pyelonephritis is a bacterial infection of the renal parenchyma and collecting system. Diagnosis is based on clinical findings of fever, flank pain, and urinary tract infection. Computed tomography findings include renal enlargement with wedge-shaped heterogeneous areas of decreased enhancement, known as a "striated nephrogram." Imaging is primarily used to diagnose complications such as emphysematous pyelonephritis, renal abscess, and pyonephrosis. Chronic pyelonephritis can have varying appearances on imaging ranging from xanthogranulomatous pyelonephritis or, in extreme cases, renal replacement lipomatosis.
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PMID:Imaging of Renal Infections and Inflammatory Disease. 3279 23


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