Objective To evaluate the localization of adrenal functionless tumor by ultrasonographv(US).Methods One hundred and six patients with adrenal functionless tumor were examined by US and subsequentlv proved by surgery and pathology.Results In 106 cases,true positive was 103,true negative,false positive and false negative were 1 each.The sensitivity,specificity and accuracy was 99.0%,50.0%and 98.1%,respectively.The adrenal tunctionless tumor tended increasing year by year.Tumors detected at very first by US were 77.9%.Tumor size distribution was gradually increasing as following: adenoma,pheochromocytoma(PHEO), neurilemmoma,myelolipoma,gangliocytoma and adenocarcinoma,in which there is significant difference.The myelolipoma presented charactersitically hyperecho feature to be easily distinguished from other tumors.The echo featLlres in the rest tumors chaotic echo.Conclusions US is a reliable examination of the first chdce for localizing diagnosis of adrenal functionless tumor and also helpful in differentiating histopathologically.

Objective To explore some features of the sonographic appearance of recurrent and revival pheochromoeytoma (PHEO) in order to get some references in the clinical diagnosis.Methods To compare sonograms of 10 patients with recurrent and revival PHEO with sonograms of 60 cases(contrast group)with unrecurrent and unrevival PHEO in the same period.Results There was significant difference between the two groups and contrast group(G=9.475,P=0.002).However there was no significance in the incidence of malignant PHEO between recurrent and revival one(P>0.05).The echo of tumor:complex echo 2 cases,purely solid hypoecho 5 cases and hffperecho 1 case.Conclusions The tumor with recurrent and revival PHEO could have potential malignancy,the PHEO at the extra-adrenal often showed a phenomenon of recurrence,and the malignant PHEO appeared the multiple character.

Objective 6 recurrent cases of Primary retroperitoneal tumors(PRPT) after opertion were reviewed, to discuss the value of dignosis of recurrent PRPT in ultrasonography. MethodsAll (4 men and 2 women) were verified by operation and biopsy. Results4 of 6 cases were sarcomas, 4 cases were recurred once time, two times and four times each one. ConclusionUltrasonography can not only diagnose location of PRPT, but also provide reliable information for therapy or surgery. It can also be used in finding out the local recurrent masses after operation. Follow-up must be important in sarcoma.

In this paper 100 cases of renal space-occupying lesions which had been examined before operation by sonography and verified by surgery and pathology were analysed retrospectively. Results showed 99 cases of renal space-occupying lesions and 1 case of retroperitoneal tumor. There were 2 eas-es of false negative and 1 case of false positive for the localization by ultrasound.Nephromas were found to be 92.92%(92/99)totally.in which rnalignant and benign tumors were 86.96%(80/92)and 13.04%(12/92)respectively.5 cases of misdiagnosis and 2 cases of pitfall in qualitative analysis were iden-dried by pathology.The rate of accuracy was 92%(92/100).

Objective To explore the pathogeny, pathology, ultrasonic and clinical expression of upper extremity deep venous flow obstruction and superior vena cava syndrome. Methods Retrospective analysis and summarize the disease changes of 10 cases in recent 5 years. Results 7 patients of 10 cases were superior vena cava syndrome, in which 4 cases caused by upper right lung malignant tumor, 3 cases caused by upper and media mediastinal malignant tumor. 2 patients of 10 cases were found thrombosis in right subclavian vein caused by duct of artificial pacemaker. The left 1 patient was no reason thrombosis in right axillary vein. Conclusion Ultrasonography combine with color and spectral Dopper image can evaluate the clinical development and therapeutic efficiency, which is a useful and effective non-invasive examination.