Odontogenic abscess mimicking acute dacryocystitis.

A middle-aged poorly controlled diabetic man developed left-sided orbital and facial swelling several days after extraction of a left upper wisdom tooth. The clinical impression was that of acute dacryocystitis. Opening the skin above the lacrimal sac failed to reveal an inflamed sac establishing the diagnosis of deep facial cellulitis. Complete resolution occurred few weeks after systemic antibiotics and repeated dental drainage of the tooth abscess.