CT and MRI Manifestations of Prostate Sarcoma:A Report of 4 Cases and Review of the Literature / 实用放射学杂志

ABSTRACT

Objective To explore the CT and MR imaging features and differential diagnosis of the prostate sarcoma.Methods CT and MRI findings of prostate sarcoma in 4 patients confirmed by pathology were retrospectively analyzed with literature review.Results All cases underwent plain CT scan and one case underwent contrast-enhanced CT scan,MR imaging was performed in 2 cases.The prostates were increased obviously in volume,the average anterior-posterior diameter was 60.5 mm in all cases,lobulated heterogeneous low-density with lowest-density in the center and the tumors were undefinitive with surrouding structures in 3 cases,1 case showed oval homogeneous low-density with sharp margin on plain CT scan.On contrast-enhanced CT,the lesions appeared as heterogeneous enhancement in periphery of prostates and no enhanced at the centre.MRI showed heterogeneous hypo-signal intensity on T1WI and miscellaneous slight high-signal intensity at center and hyper-signal intensity at periphery on T2WI.Conclusion CT and MRI are the effective methods in diagnosing the prostatic sarcoma.