Key result
En-bloc retroperitoneal liposarcoma resection should avoid R1 margins while conserving kidneys in elderly patients.
En-bloc resection with nephrectomy may be necessary for giant retroperitoneal liposarcomas encasing the kidney to avoid R1 margins, though renal conservation is suggested for displaced kidneys in elderly patients.
A 68-year-old female was operated for a giant dedifferentiated retroperitoneal liposarcoma (RLS) encasing entirely the right kidney. She had an en-bloc resection of the tumor with right nephrectomy. The en-bloc resection should avoid R1 resection margins. Renal conservation is suggested if the kidney is widely displaced and for elderly patient.
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Harbi et al. (2021) studied this question. En-bloc resection of giant retroperitoneal liposarcoma should avoid R1 margins, though renal conservation is suggested for elderly patients or when the kidney is widely displaced.
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