卵巢甲状腺肿影像诊断与病理对照分析

目的：分析卵巢甲状腺肿（SO）的影像学表现,并与病理学对照,旨在提高对该病的认识及诊断水平。方法：回顾性分析12例经手术及病理证实的卵巢甲状腺肿的临床,CT及MRI资料,将影像学表现与手术病理结果对照。结果：影像学表现为境界清晰的不规则肿块,大多位于单侧（n=11,91.7%）,呈囊实性（n=6,50.0%）或多发纯囊性（n=6,50.0%）。囊性部分为边界清晰、多发大小不等的囊腔,均有完整囊壁,内壁光整,8例（66.7%）病灶内可见高密度囊,其中2例高密度囊腔T1WI为高信号,T2WI为低信号,实性部分为形态不规则的软组织密度,分布于囊腔之间,增强扫描囊性部分无强化,囊壁可见无或中重度强化,实性部分明显强化;8例（66.7%）囊壁可见斑点状钙化,4例（33.3%）病灶合并大量腹水及少量胸水。结论：卵巢甲状腺肿表现为边界光整的囊实性肿块,CT上的高密度囊腔及MRI上T1WI高信号,T2WI低信号囊腔具有相对特征性,CT及MRI诊断有其重要价值。

Struma Ovarii Correlation of Imaging Appearances vs Pathological Findings

Objective： To analyze the imaging features of Struma ovarii（SO）,and to correlate the imaging appearances with the pathological findings so as to enhance the knowledge of the imaging diagnostics of the disease.Methods：The clinical data,CT and MRI features of twelve patients with pathologically proved SO were retrospectively analyzed.Imaging features were compared with pathological results.Results： The most tumors（n=11,91.7%） were unilateral.On CT and MRI,the lesions presented as well-defined irregular shaped masses.Mainly cystic（n = 6,50%） or cystic（n = 6,50%） appearance was common to all the tumors.The cystic portions presented as well-defined,multiple,various size,and has a whole cyst wall with smooth inner wall.Eight cases of tumors（66.7%） showed a high attenuation lesion in the cyst portion of the mass on CT precontrast scans,in which two cases showed high signal on T1WI and low signal on T2WI.The solid portions,which distributed in the cyst showed irregular tissue density.After contrast administration,the cystic portions showed no enhancement,the solid portions marked enhancement,and the cyst wall demonstrated no,moderate,or marked enhancement.Eight cases of tumors（66.7%） showed stippled calcification in cyst wall.Four cases of tumors（33.3%） accompany a great of abdominal dropsy and pleural fluid.Conclusion：In general,struma ovarii appeared as a smooth marginated multicystic mass with a high attenuation lesion on precontrast scans On CT scans,and signal intensities on T1-weighted images were partly intermediate to high,or high,and those on T2-weighted images were low.The CT and MRI characteristic findings of SO might be of great value for the diagnosis.