Case report on the coincidence of retroperitoneal dedifferentiated giant liposarcoma and renal papillary cell carcinoma

Abstract

The most common histological type of retroperitoneal sarcomas

is liposarcoma. Renal papillary cancers account for approximately

10% of all known renal cell cancers and nephrectomy is the

preferred choice for the treatment in suitable cases. In this report,

we presented a concurrency of giant retroperitoneal liposarcoma

and renal papillary cancer in a 61-year-old male patient. He was

referred to our clinic with complaints of abdominal distension

and pain. Computed tomography (CT) scan, magnetic resonance

imaging (MRI) and positron emission tomography-computed

tomography (PET-CT) revealed a giant mass filling intraabdominal

and retroperitoneal space, approximately 50x30 cm in size and also

a separate mass which is 6x8 cm in size in the upper pole of the left

kidney. The giant mass was excised in two separate pieces. After

frozen section procedure, nephrectomy was performed for mass

arising from the left kidney. Histopathological analysis of the large

masses, revealed dedifferentiated liposarcoma and renal papillary

cellular cancer in the abdomen and left kidney, respectively.

In conclusion, a second primary tumor can be seen in patients

with giant retroperitoneal liposarcoma and coincidence of

these tumors must be determined in the preoperative period for

appropriate treatment.

Keywords

• Retroperitoneum,Liposarcoma,Renal papillary cancer

References

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