Clinical analysis of differential diagnosis between renal cell carcinoma and benign space-occupying mass / 中华泌尿外科杂志

ABSTRACT

Objective To improve the differential diagnosis between benign renal mass and renal cell carcinoma(RCC) so as to lower the misdiagnosis rate. Methods This study included 12 cases of renal mass,whose age ranged from 35 to 69 years with a mean of 52 years.Among the 12 cases,flank pain occurned in 9,2 of whom had gross hematuria.Three clinically asymptomatic cases were detected incidentally by ultrasound in physical examination.All the 12 cases underwent imaging examinations such as B-ultrasound and CT scan,and all of them were preoperatively diagnosed as RCC. Results All the cases were surgically treated.Seven underwent enucleation or simple nephrectomy because of the diagnosis of benign renal mass by intraoperative frozen section.Five underwent radical nephrectomy.None developed recurrence during follow-up of 1 to 3 years. Conclusions Clinicians should not overestimate the diagnostic significance of imaging examinations such as CT and ultrasonography.For cases who have no definite diagnosis,surgical exploration can be performed.Intraoperative frozen section by pathologic study can increase correct diagnostic rate. Most of the misdiagnosed benign renal masses have different imaging features from those of RCC.