Ultrasonogram appearance of recurrent and revival pheochromocytomas

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. Key words: Ultrasonography; Pheochromocytoma; Recurrence