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目的探讨泪腺导管囊肿的CT和MRI表现。方法回顾性分析7例经手术证实的泪腺导管囊肿患者的CT和MRI资料,其中7例接受眼眶MRI检查,1例接受眼眶CT检查。结果 4例位于泪腺睑部,1例为双侧病变,2例(3侧)表现为多囊状,1例呈类圆形,1例呈边缘圆钝的三角形;3例来源于副泪腺,2例位于下睑穹窿部鼻侧,1例位于上睑穹窿部鼻侧。1例行CT检查,呈软组织密度;7例行MRI检查,T2WI均为高信号,T1WI上3例为等信号,4例为低信号,增强扫描1例边缘有强化。结论 CT和MRI,尤其是MRI检查能够对发生于泪腺睑部泪腺导管囊肿的诊断提供可靠信息;副泪腺的泪腺导管囊肿发生于眼眶穹窿部,在眶前部囊性病变的鉴别诊断中应考虑到此病。
Objective To investigate the CT and MRI findings of lacrimal duct cyst. Methods The CT and MRI data of 7 cases of lacrimal duct cyst proved by operation were analyzed retrospectively. Among them, 7 cases received orbital MRI examination and 1 case received orbital CT examination. Results Four cases were located in the eyelid of lacrimal gland, one case was bilateral lesion, two cases (3 sides) showed polycystic, one case was round and one case was round and obtuse triangle. Three cases were from subsidiary lacrimal gland, Two cases were located in the nasal side of the lower eyelid fornix and one was located in the nasal side of the upper eyelid fornix. One case underwent CT examination with soft tissue density. MRI was performed in 7 cases. All of T2WI were high signal, 3 cases were equal signal on T1WI, 4 cases were low signal, and 1 case had enhanced edge. Conclusions CT and MRI, especially MRI, can provide reliable information for the diagnosis of lacrimal duct ductal lacrimal gland in lacrimal gland. The lacrimal gland duct cyst of lacrimal gland occurs in orbital fornix and should be considered in the differential diagnosis of cystic anterior orbital disease To this disease.