Retroperitoneal sarcomas
are rare neoplasms. CT or MR imaging is performed in patients with
these tumors to detect local extent and distant metastases of the tumor
and for preoperative surgical planning. Most sarcomas cannot
be characterised as to cell type with CT or MR, with the exceptions
being liposarcomas and intracaval leiomyosarcomas. Similarly
histological grading cannot be made definitively with imaging alone, the
exception being liposarcoma since well differentiated liposarcomas
contain more macroscopic fat than do less differentiated liposarcomas.
After surgery, follow up imaging with CT or MR and careful scrutiny of
the tumor bed and resection site are essential to detect early
recurrences, which can often be managed with re-resection.
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