91 year old female. Left orbital swelling.
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Hyperdense medial epicanthal mass (fluid density) centered over the the left lacrimal sac. Associated pre-septal soft tissue standing. No post-septal inflammation. No dacryolithiasis or subperiosteal abscess.
Dacryocystitis is the inflammation/ infection of the lacrimal sac from an obstruction. This can be classified as congenital or acquired. In adults the lacrimal sac or NLD can be obstructed by dacryolithiasis or mucus/soft tissue debris which predisposes to infection.