Ultrasonographic Evaluation of Retroperitonea Tumors

We have analyzed 44 cases of the ultrasonographic findings of pathologically provened retroperitoneal tumors. The results are as follows: 1. Among the tumor of the retroperitoneal structure in 44 cases, the most common organ was kidney in 26 cases(59%), the adrenal gland in 7 cases(16%) and the other retroperitoneal area in 11 cases(25%)2. 11 cases of hypernephroma revealed the localized or diffuse renal enlargement and lobulated contour containing the internal echoes as follows: complex echo in 7 cases, hypo echo in 7 cases, hypo echo in 3 cases and hyper echo in1 case. The ultrasonographic findings of the Wilms' tumor in 6 cases revealed the localized or diffuse renal enlargement with smooth contour in 3 cases and lobulated contour 3 cases containing the internal echoes as follows: hyper echo in 3 cases and complex echo in 3 cases. 3. The ultrasonographic findings of the adrenal tumor in 7 cases, the size was more than 3cm in diameter and showed the convex margin with round or ovoid shape in all cases. The internal echoes were as follows: complex echo in 4 cases and hypo echo in 3 cases. 4. The ultrasonographic findings of the metastatic tumor in retroperitoneal area in 7 cases revealed the well defined and nodular contour with hypo internal echo pattern in 6 cases and ill defined and irregular contour with complex internal echo pattern in 1 case. 5. It was easy to define the anatomical localization of the mass lesions and to see the mass character by ultrasonographic examination