Takeuchi Mayumi, Matsuzaki Kenji
Department of Radiology, University of Tokushima, Tokushima, Japan.
J Comput Assist Tomogr. 2011 May-Jun;35(3):343-6. doi: 10.1097/RCT.0b013e318218c09e.
Hyperreactio luteinalis (HL) is a rare benign physiological ovarian enlargement associated with gestational trophoblastic disease or pregnancy, and may mimic neoplasm. We evaluated magnetic resonance findings of HL to distinguish from neoplasm by using diffusion-weighted imaging with apparent diffusion coefficient (ADC) measurement.
Magnetic resonance manifestations of 15 cases of HL in 8 women (mean age, 32 years) were retrospectively evaluated. Diffusion-weighted imaging (b = 0 and 800 seconds/mm²) was obtained in 11 cases of HL, and ADC was compared with that in solid portions of 18 ovarian cancers.
All cases of HL appeared as multilocular cystic masses with septations mimicking mucinous cystic tumors. Intervening ovarian stroma exhibited hyperintensity on diffusion-weighted imaging. The ADC in ovarian stroma in HL was significantly higher than that in solid portions of ovarian cancers.
Ovarian stroma in HL may mimic solid tumorous components in mucinous tumors; however, high ADC reflecting edematous, luteinized stroma may be helpful for the diagnosis of HL.
黄素化囊肿（HL）是一种与妊娠滋养细胞疾病或妊娠相关的罕见良性生理性卵巢增大，可能类似肿瘤。我们通过使用表观扩散系数（ADC）测量的扩散加权成像评估HL的磁共振成像表现，以与肿瘤相鉴别。
回顾性评估8名女性（平均年龄32岁）中15例HL的磁共振成像表现。11例HL患者行扩散加权成像（b = 0和800秒/mm²），并将ADC与18例卵巢癌实性部分的ADC进行比较。
所有HL病例均表现为多房性囊性肿块，有分隔，类似黏液性囊性肿瘤。其间的卵巢间质在扩散加权成像上呈高信号。HL卵巢间质中的ADC显著高于卵巢癌实性部分中的ADC。
HL中的卵巢间质可能类似黏液性肿瘤中的实性肿瘤成分；然而，反映水肿、黄素化间质的高ADC值可能有助于HL的诊断。
