Multi-resistant Enterobacter cloacae dacryocystitis and preseptal cellulitis: case and review of literature.

A 61-year-old man with no significant past medical history presented to a quaternary ophthalmic referral center with acute right-sided medial canthal pain, periorbital edema, and erythema despite oral antibiotic therapy. CT imaging confirmed the presence of right preseptal cellulitis and lacrimal sac aspiration identified Enterobacter cloacae. A diagnosis of acute right-sided dacryocystitis with preseptal cellulitis was made. He was successfully treated with broadening of antibiotic therapy to intravenous meropenem. Symptomatic resolution was noted on follow-up without evidence of disease recurrence. This unusual case of Enterobacter cloacae dacryocystitis and preseptal cellulitis highlights the increasing prevalence and challenges of treating these uncommon organisms.