Key result
Total right nephrectomy and extirpation of an intravascular tumor in a 58-year-old woman revealed a well-differentiated liposarcoma of the renal sinus invading the right renal vein and parenchyma.
Case Report (n=1)
This report describes a rare case of well-differentiated liposarcoma of the renal sinus extending into the renal venous lumen.
Highlights rare renal sinus liposarcoma with venous invasion in differential diagnosis; leaves open optimal management strategies.
Liposarcoma arising from the renal sinus is rare and there have been no reports of intravenous extended liposarcoma of the renal sinus thus far. We report a case of liposarcoma of the renal sinus that extended into the renal venous lumen. A 58-year-old woman was referred to our hospital for an intravascular fatty tumor of the right renal vein incidentally discovered by an abdominal screening ultrasonogram. Computer tomography revealed a fatty tumor extending from the right kidney to the right renal vein with no evidence of metastatic lesions. Total right nephrectomy and extirpation of the intravascular tumor of the right renal vein were carried out. Pathological findings showed well-differentiated liposarcoma of the renal sinus. The tumor invaded to the right renal vein and the renal parenchyma.
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Matsushita et al. (2007) conducted a case report in Intravenous extended liposarcoma of the renal sinus (n=1). Total right nephrectomy and extirpation of the intravascular tumor was evaluated on Pathological findings and tumor invasion. Total right nephrectomy and extirpation of an intravascular tumor in a 58-year-old woman revealed a well-differentiated liposarcoma of the renal sinus invading the right renal vein and parenchyma.
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