卵巢癌肉瘤的磁共振表现与临床病理对照研究

Magnetic resonance imaging of ovarian carcinosarcoma: correlation to the clinicopathological findings

目的探讨卵巢癌肉瘤的MR表现特点及其诊断价值。方法回顾性分析了5例卵巢癌肉瘤的临床资料及MR表现,对其影像表现和病理学检查结果进行对照。结果 5例均表现为巨大团块状异常信号,平扫T1WI为均匀或不均匀低信号,T2WI为不均匀稍高信号或高低混杂信号,部分可见出血坏死。增强扫描后均表现为不均匀显著强化呈片絮状或条状。2例侵犯大网膜、乙状结肠、子宫体后壁,伴肿大淋巴结。5例均合并盆腔积液,1例合并盆腔积血。结论 MRI可对卵巢癌肉瘤的诊断和临床分期提供重要参考。

Objective To investigate magnetic resonance imaging （MRI） characteristics of ovarian carcinosarcoma and the diagnostic value of MRI. Methods The MRI features of ovarian carcinosarcoma and clinical data of 5 patients with ovarian carcinosarcoma were reviewed. All the lesions were confirmed by surgery and pathological examination. Results MRI of ovarian carcinosarcoma in the 5 cases all showed large tumor mass and heterogeneous high-intensity on T2-weighted images and low-intensity on T1-weighted images, with laminar or stripe-like enhancement. Hemorrhage and necrosis were also displayed in some lesions. In two cases, the tumors invaded the greater omentum, sigmoid colon and the body of the uterus, with regional lymph node involvement. Pelvic effusion was observed in all the cases with pelvic hematocele in 1 case. Conclusion MRI is useful in the detection and staging of ovarian carcinosarcoma.