MRI Characteristics and Pathological Features Analysis of Ovarian Sclerosing Stromal Tumors

WU Zhixian; ZHENG Shunyong; HUANG Qingwen

doi:10.13919/j.issn.2095-6274.ZHJY202410037

Abstract：Objective To explore the MRA of Ovarian Sclerosing Stromal Tumor(OSST) and its correlation with pathological findings,in order to enhance the understanding and diagnostic accuracy of this condition. Meth-ods A retrospective analysis was conducted on 15 patients with OSST,confirmed by postoperative pathology,who were treated at Zhangzhou Hospital of Fujian Medical University between May 2016 and August 2024. The size,shape,border,cystic or solid nature,plain scan signals,and enhancement characteristics of the tumors were observed and compared with pathological results. Results All 15 cases were unilateral. Of the tumors,10 were oval-shaped,3 were round,1 was lobulated,and 1 was irregular in shape. Eight tumors were solid,while 7 were cystic-solid,and 4 cystic-solid tumors exhibited a "lake-island" sign. On MRI contrast-enhanced scans,three dis-tinct patterns of enhancement were observed in the tumor parenchyma:In the arterial phase,there was a significantly uniform enhancement,followed by progressive and sustained enhancement in the delayed phase (5 cases).In the arterial phase,peripheral enhancement was prominent,with progressive and centripetal enhancement in the venous and delayed phases,resembling the enhancement pattern of hepatic cavernous hemangiomas (6 cases).In the arterial phase,mild uniform enhancement was observed,with progressive and significant enhancement in the delayed phase (1case). Conclusion The MRI features of ovarian sclerosing stromal tumors are relatively distinctive. When combined with the clinical presentation,MRI can improve the accuracy of diagnosis.