Presentation
Painful swelling of left side eyelids and medial canthus and focal soft tissue bulge on the medial canthus with skin reddening.
Patient Data
Cystic distention of left side lacrimal sac and thickening of the wall of the sac, widened left side nasolacrimal duct, eyelids and preseptal soft tissue swelling, and fluid and thick mucosa in left side ethmoid and maxillary sinuses are seen. Note the minimal irregularity of the left orbit upper medial wall which can be due to previous trauma and deformity. Soft tissue swelling of right side preseptal is also seen.
Case Discussion
The case illustrates dacryocystitis or infection of the lacrimal sac which is the most common pathology of the sac and is usually due to nasolacrimal duct obstruction (NLDO) that causes a secondary infection of eyelids, preseptal and lacrimal sac wall, and content. The most common cause of secondary NLDO is previous trauma.
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