Imaging manifestations and clinical characteristics of lacrimal duct cyst
Objective To explore and analyze the computed tomography(CT)and magnetic resonance imaging(MRI)features and clinical features of lacrimal duct cysts,in order to improve the accuracy of imaging diagnosis of this disease.Methods A retrospective case series study.The clinical characteristics,pathology,CT and MRI imaging findings of 18 cases of lacrimal duct cysts confirmed by surgical cases in our hospital from January 2017 to February 2023 were ana-lyzed.Results All 18 cases of lacrimal duct cysts were unilateral,and they were all newly diagnosed patients.There were 4 patients with a history of eye diseases,12 patients with accompanying symptoms such as eye pain,swelling,and eye wear,13 patients with right orbit,5 patients with left orbit,15 patients with lacrimal gland eyelid,1 patient with lacrimal gland or-bit,1 patient with upper eyelid fornix,1 patient with lacrimal sac fossa.18 cases underwent CT plain scan,including 13 cases with low density(CT value 0-30HU)and 5 cases with soft tissue density(CT value 30-80HU),all of which showed no calcification.18 cases underwent MRI plain and enhanced scans,including 13 cases with low signal on T1WI and 5 cases with equal signal.DWI showed no limited changes,13 cases showed no enhancement on enhanced scans,and 5 cases showed slight thickening,roughness,and enhancement of the cyst wall.Pathological findings suggest that inflammatory cells can be seen in 3 out of 18 cases of lacrimal duct cysts.Conclusions Lacrimal duct cysts are more common in middle-aged and elderly patients,slightly more common in males,and clinical symptoms are mostly eye swelling,pain,and eye wear.The characteristic imaging manifestations of lacrimal duct cysts are low density CT,long T1 and T2 on MRI,and no enhancement.
Orbital tumorsLacrimal duct cystX-ray tomographyMagnetic resonance imaging
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