A CASE OF MYXOID TYPE RETROPERITONEAL LIPOSARCOMA

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  • 粘液型後腹膜脂肪肉腫の1例

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Abstract

Retroperitoneal liposarcomas are rare. It has been reported that the prognosis correlates to the histologic pattern and well differentiated and myxoid types have a good prognosis. This time, we experienced a myxoid type retroperitoneal liposarcoma and analyzed DNA content as an index of prognosis using a flow cytometry.<br> A 64-year-old man was admitted to the hospital because of an epigastralgia and vomiting. A 10×9cm tumor was palpated in the left upper abdomen. From abdominal ultrasonography, CT and angiography finidngs, a retroperitoneal liposarcoma was suspected. Operation was performed. The encapsulated tumor was completely excised. The excised specimen was 17×11×8cm in size and 1150g in weight. Histologically, it was classified into myxoid type. From an analysis of DNA content. DNA ploidy pattern was diploid and S phase fraction was 10%. Postoperative course was uneventful and no evidence of recurrence has been detected as of 31 months after the operation.<br> From these findings a good prognosis can be expected for the patient. However, there were a few reported cases which had recurrence more than 10 years after operation. It is importnat for us to follow up him carefully from now on.

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