Purpose
Retroperitoneal soft tissue sarcomas are frequently found in advanced state due to the abscent or nonspecific symptoms, and the only hope for cure is a radical resection. The differentiation between benign and malignant tumor is a prerequisite
for
preoperative preparation and deciding the extent of resection. for the purpose of determining the malignancy of retroperitoneal tumor, we evaluate the clinicoradiologic features of the patients. Methods
Retrospective study was done on 37 eases who were operated Korea University Hospital from Jan. 1990 to Dec. 1998. Their clinicoradiologic characters were analyzed and compared between benign and malignant tumor pationts. Results
Among the 37 cases, 27 cases (73%) were benign tumors and the remaining 10 cases (27%) were malignant tumors. There was no significant difference in age distribution between malignant and benigntumor group (p＞0.05)
Among 20 male patients, 10 eases had malignant tumor (50%) but all 17 female patients had benign tumor (p=0.001) Preoperative symptoms were present in 29 cases (78.4%). and mean duration of symptoms in malignant cases was 20 months and in benign
cases
was 18 months but had no significance in differentiating between malignant and benign tumors (p＞0.05) All eases were porformed abdominal CT scanning and it had 100% of sensitivity and 74% of specificity. Among the radiologic characteristics,
size
of
tumor, irregular margin, and abscence of calcification were correlated with malignancy (p＜0.05). Conclusion
Preoperative clinical symptoms and duration are not helpful in differentiating the malignaney but CT scanning has a good results for such purpose. So when the retroperitoneal tumor shows large size, irregular margin and no visible calcification
especially in male patients, the patient, we should prepare and treat the patients according to malignant tumor.
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