Department of Diagnostic Radiology, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, Okayama, 710-8602, Japan.
Department of Radiology, Japanese Red Cross Society Himeji Hospital, 1-12-1 Shimoteno, Himeji, Hyogo, Japan.
Jpn J Radiol. 2021 Oct;39(10):1009-1016. doi: 10.1007/s11604-021-01145-1. Epub 2021 Jun 5.
PURPOSE: The purpose of this study is to describe the characteristic MRI, CT, and F-fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) findings of Wolffian tumor.
We reviewed preoperative images in four surgical cases of Wolffian tumor. MRI was available for review in all cases with additional diffusion-weighted images (DWI) in three, and contrast-enhanced images in two. CT was available in three. FDG-PET/CT was obtained in two.
Two patients were asymptomatic, while the other two presented with acute abdomen. On MRI, all tumors were well-defined masses of increased signals on T2WI. Three tumors were solid, whereas the other was solid and cystic. The normal ipsilateral ovary was identified in two patients of reproductive ages, but not in two postmenopausal patients. Tumors in two patients presented with acute abdomen were complicated by hemorrhage. All three tumors evaluated on DWI showed high intensities. Contrast-enhanced images of MRI and CT showed homogeneous enhancement as the same degree as the myometrium. On CT, one tumor contained punctate calcifications. FDG-PET/CT showed moderate FDG accumulation.
Wolffian tumors may be typically solid extraovarian tumors occasionally associated with cysts and calcifications. Although they are benign, they mimic malignancy due to high intensities on DWI and increased FDG accumulation.
目的：本研究旨在描述沃夫氏瘤的 MRI、CT 和 F-氟代脱氧葡萄糖正电子发射断层扫描/计算机断层扫描（FDG-PET/CT）特征。
我们回顾了 4 例沃夫氏瘤手术病例的术前图像。所有病例均行 MRI 检查，其中 3 例加做弥散加权成像（DWI），2 例加做增强扫描。3 例做 CT，2 例行 FDG-PET/CT。
2 例患者无症状，另 2 例表现为急腹症。MRI 上，所有肿瘤均为边界清楚的高信号肿块。3 个为实性，1 个为实性伴囊性。2 例生育期患者对侧卵巢正常，2 例绝经后患者未显示对侧卵巢。2 例表现为急腹症的肿瘤并发出血。2 例 DWI 评估的肿瘤均显示高强度。MRI 和 CT 的增强图像显示与子宫肌层相同程度的均匀强化。1 例 CT 肿瘤内可见点状钙化。FDG-PET/CT 显示中度 FDG 摄取。
沃夫氏瘤可能是偶尔伴有囊肿和钙化的典型卵巢外实性肿瘤。尽管它们是良性的，但由于 DWI 上的高信号和 FDG 摄取增加，它们类似于恶性肿瘤。
