Ovarian solid tumors have variable histological types including benign and malignant tumors. In addition, non-neoplastic lesions sometimes show a tumor-like appearance. It is important to differentiate benign from malignant tumors. In general, low signal intensity (SI) on T2-weighted imaging (T2WI), low SI on diffusion-weighted imaging (DWI), and gradual increased pattern on dynamic contrast-enhanced magnetic resonance (MR) imaging are known to be suggestive of a benign tumor. Conversely, there are some cases in which these rules do not apply. We should, therefore, strive for a greater understanding of these exceptional cases. Several tumors show characteristic findings on MR imaging reflecting pathologic features, which leads to the correct diagnosis. Additionally, MR imaging provides important information other than the nature of tumors, such as secondary uterine changes. Furthermore, clinical findings and laboratory examination data also help in determining the correct diagnosis.

中文翻译：

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卵巢实体瘤：具有放射学-病理学相关性的 MR 成像特征。

卵巢实体瘤具有多种组织学类型，包括良性和恶性肿瘤。此外，非肿瘤性病变有时会显示出类似肿瘤的外观。区分良性和恶性肿瘤很重要。一般而言，已知 T2 加权成像 (T2WI) 上的低信号强度 (SI)、弥散加权成像 (DWI) 上的低 SI 以及动态对比增强磁共振 (MR) 成像上逐渐增加的模式提示良性肿瘤。相反，在某些情况下这些规则不适用。因此，我们应该努力更好地了解这些特殊情况。一些肿瘤在 MR 成像上显示出反映病理特征的特征性发现，从而导致正确的诊断。此外，MR 成像提供了除肿瘤性质以外的重要信息，如继发性子宫变化。此外，临床发现和实验室检查数据也有助于确定正确的诊断。