Retroperitoneal sarcomas are mesodermic origin and include less than 1% of all malignant tumors. The most frequent histological type of sarcoma are liposarcomas. Most commonly they are located in lower extremitetes while intraabdominal findigs are rare. Early diagnosis is quite challenging because the first symptoms occur only in advanced stages of disease. The gold standard for diagnosing is MSCT. The therapeutic approach is surgical by combining radiation therapy in case of recurrence and excision was not comletly. The chemotherapy is still controversial, and most authors consider that it is not adequate way of treatment. Seventy years old woman was admitted to the department of surgery because of the pain located in theleft half of the abdomen. It lasts for 3 monthsand in recent times became stronger and accompanied by nausea. Stooll and urin were regular . Physical examination revealed painfully formation. Velaues of blood examples were within normal range. US and MSCT of the abdomen were made before operation. MSCT showed retroperitoneal TU formation size 52x35cm. The findings were confirmed during the operation. Tumor weight was 9250g. Histopathological examination showed that it was a low-grade myxoid liposarcoma. One year after surgery, there was a recurrence. The first symptoms of abdominal liposarcoma manifests only in advanced stages of the disease. Radical surgical excision first choice in treatment. If the excsion lines could not be clear radiotherapy should be added.

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.