摘要
目的:分析眼附属器淋巴瘤的CT和MRI表现,提高对本病的影像学认识。方法:回顾性分析经手术或活检病理证实的55例(共64眼)眼附属器淋巴瘤的影像学表现,其中左眼27例,右眼19例,双眼9例。49例行CT扫描,3例行CT和MRI扫描,3例行MRI扫描。结果:肿块常侵犯多处部位,26例有眼睑或结膜侵犯,20例有泪腺侵犯,8例有肌锥内侵犯,16例有肌锥外侵犯,14例同时有肌锥内、外侵犯。34例肿块呈弥漫型,11例呈结节团块型,10例呈弥漫和结节混合型。眶内肿块常沿眶隔结构塑形生长,可环绕球壁、眼外肌、视神经生长。38例行平扫,显示淋巴瘤均呈中等密度,36例密度较均匀,2例密度欠均匀,边界模糊或欠清。40例行增强扫描,34例强化均匀,6例强化欠均匀,其中1例有液化表现,仅3例有骨质改变。MRIT1WI和T2WI上肿瘤信号较均匀,增强扫描示肿块均匀强化,3例采用脂肪抑制技术,肿块信号显示更清晰,边界更清楚。结论:眼附属器淋巴瘤的影像学表现有一定特征性,MRI脂肪抑制技术有助于了解肿瘤范围。
Objective：To study the CT and MRI features of adnexa oculi lymphoma and to improve the knowledge ior the diagnosis of the disease. Methods：CT and MRI findings of 55 cases （64 eyes） with pathologically proved lymphoma of adnexa oculi were retrospectively analyzed,left eye was involved in 27 cases, right eye was involved in 19 cases, while bilateral involvement were detected in 9 cases. 49 cases underwent CT scanning, 3 cases underwent MR scanning, both CT and MRI were performed in 3 cases. Results： Multiple locations of involvement were frequently revealed. Eyelids or conjunctivae invasion were assessed in 26 cases,lacrimal gland invasion in 20 cases,intra-muscuclar cone invasion in 8 cases, extra-conal invasion in 16 cases,simultaneous intra- and extra-conal invasion in 14 cases. 34 lesions showed diffuse infiltration, ll lesions were nodular of mass-like, 10 lesions showed mixed features. The lesions which were located within the orbits often showed molding growth pattern along the ocular structures, such as global wall. extra-ocular muscles and optic nerve. Of the 38 patients had plain CT, homogeneous attenuation were showed in 36 cases, while 2 lesions were heterogeneous, most of them were ill-defined. Of the 40 patients had enhanced CT,34 patients showed homogeneous enhancement while 6 patients showed heterogeneous enhancement. Cystic necrosis （n = 1） and bony change （n = 3） were founded. The tumors showed homogeneous signal intensity on T1WI and T2WI MR images, and homogeneous enhancement after contrast administration. 3 cases showed well-delineated mass lesion on fat suppression sequence. Conclusion： Lymphoma of adnexa oculi showed characteristic imaging manifestations,the contour of the tumor and the range of invasion could be clearly delineated on MRI with fat suppression technique.
出处
《放射学实践》
2007年第7期694-697,共4页
Radiologic Practice
