MRI对卵巢颗粒细胞瘤的诊断价值
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摘要
目的:探讨卵巢颗粒细胞瘤(OGCT)的MRI及DWI特点,以提高对该病的认识。方法:回顾性分析经手术确诊的12例OGCT的临床及MRI资料,并对所有患者行DWI(b=0、800 s/mm~2)及ADC值测量。结果:12例中,幼年型OGCT 3例,成年型OGCT 9例。囊性2例,囊实性9例,实性1例。实性成分T_1WI呈等或稍高信号,T_2WI呈稍高或等信号,DWI呈不同程度高信号,平均ADC值0.612×10~(-3)mm~2/s;囊性成分T_1WI呈低等或稍高信号,T_2WI呈高信号,DWI上部分囊液呈等或稍高信号,部分呈低信号,平均ADC值2.207×10~(-3)mm~2/s;增强扫描实性部分呈中等至明显强化,囊性部分未强化。11例肿瘤囊变区可见数量不等的出血信号。结论:OGCT的临床特点不典型,但其MRI表现具有特征性,有助于作出较为准确的术前诊断。
Objective:To investigate the MRI and DWI features of ovarian granulosa cell tumor(OGCT),so as to improve the diagnostic accuracy. Methods:Clinical and MRI materials of 12 patients with OGCT confirmed by operation were retrospectively analyzed. All cases underwent DWI(b=0,800 s/mm~2) scanning and ADC values measurement. Results:9 cases were diagnosed as adult OGCT,and 3 cases were diagnosed as juvenile OGCT. 2 lesions were cystic masses,9 cases were cystic-solid masses and 1 case was solid mass. The solid component showed iso-or slightly hyperintensity signal on T_1WI,slightly high or isointensity signal on T_2WI,different degrees of hypersignal on DWI,and the average ADC value was 0.612×10~(-3) mm~2/s. The cystic component showed low iso-or slightly hyperintensity signal on T_1WI and hyperintense signal on T_2WI,while on DWI,partly were iso-or slightly hyperintense signal,partly were hypointensity signal,and the average ADC value was 2.207×10~(-3) mm~2/s. Enhanced scanning showed the solid component with medium-obvious enhancement,the cystic part without enhancement. Above all,11 cases were found hemorrhage signals in the cystic zone. Conclusion:OGCT may have no typical clinical features,but it has characteristic MRI features,which can help to make accurate preoperative diagnosis.
Objective:To investigate the MRI and DWI features of ovarian granulosa cell tumor(OGCT),so as to improve the diagnostic accuracy. Methods:Clinical and MRI materials of 12 patients with OGCT confirmed by operation were retrospectively analyzed. All cases underwent DWI(b=0,800 s/mm~2) scanning and ADC values measurement. Results:9 cases were diagnosed as adult OGCT,and 3 cases were diagnosed as juvenile OGCT. 2 lesions were cystic masses,9 cases were cystic-solid masses and 1 case was solid mass. The solid component showed iso-or slightly hyperintensity signal on T_1WI,slightly high or isointensity signal on T_2WI,different degrees of hypersignal on DWI,and the average ADC value was 0.612×10~(-3) mm~2/s. The cystic component showed low iso-or slightly hyperintensity signal on T_1WI and hyperintense signal on T_2WI,while on DWI,partly were iso-or slightly hyperintense signal,partly were hypointensity signal,and the average ADC value was 2.207×10~(-3) mm~2/s. Enhanced scanning showed the solid component with medium-obvious enhancement,the cystic part without enhancement. Above all,11 cases were found hemorrhage signals in the cystic zone. Conclusion:OGCT may have no typical clinical features,but it has characteristic MRI features,which can help to make accurate preoperative diagnosis.
引文
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[4]杜斌,车栓龙.卵巢颗粒细胞瘤的MRI表现[J].中国中西医结合影像学杂志,2016,14(1):77-78.
[5]邹玉坚,郑晓林,李建鹏,等.卵巢颗粒细胞瘤的MRI和CT特征性表现及与病理对照[J].中国CT和MRI杂志,2015,13(7):87-91.
[6]冯少仁,刘国辉,胡银华,等. MRI对卵巢颗粒细胞瘤的诊断价值[J].放射学实践,2012,27(4):440-443.
[7]方梦诗,黄美霞,王蕾,等.卵巢颗粒细胞瘤的MRI弥散成像与动态增强表现分析[J].医学影像学杂志,2016,26(1):77-80.
[8]罗琳,何炳均,单鸿,等.卵巢囊实性恶性肿瘤弥散加权成像的临床应用价值[J].中国CT和MRI杂志,2010,8(2):53-56.
[2] Dilbaz B,Karadag B,Hizli D,et al. Ruptured ovarian granulose cell tumor as a cause of hemoperitoneum[J]. Saudi Med J,2012,33:912-913.
[3] Segal R,DePetrillo AD,Thomas G. Clinical review of adult granulosa cell tumors of the ovary[J]. Gynecol Oncol,1995,56:338-344.
[4]杜斌,车栓龙.卵巢颗粒细胞瘤的MRI表现[J].中国中西医结合影像学杂志,2016,14(1):77-78.
[5]邹玉坚,郑晓林,李建鹏,等.卵巢颗粒细胞瘤的MRI和CT特征性表现及与病理对照[J].中国CT和MRI杂志,2015,13(7):87-91.
[6]冯少仁,刘国辉,胡银华,等. MRI对卵巢颗粒细胞瘤的诊断价值[J].放射学实践,2012,27(4):440-443.
[7]方梦诗,黄美霞,王蕾,等.卵巢颗粒细胞瘤的MRI弥散成像与动态增强表现分析[J].医学影像学杂志,2016,26(1):77-80.
[8]罗琳,何炳均,单鸿,等.卵巢囊实性恶性肿瘤弥散加权成像的临床应用价值[J].中国CT和MRI杂志,2010,8(2):53-56.