Abstract
A 49-year-old man was found to have type2 diabetes mellitus two years previously. However, he had not received any treatment for this condition. He underwent the extraction of his left maxillary canine due to dental caries. Two weeks after the extraction, he visited our hospital complaining of swelling of his left eye. The laboratory data showed poor blood glycemic control (HbA1c 15.3 %). Magnetic resonance angiography and computed tomography showed left orbital cellulitis and septic pulmonary embolus and vision impairment (left 0.1). Since K. Pneumoniae was detected from his blood and the sputum culture, and from the culture of the abscess collected from the tooth extraction wound, we considered that odontogenic orbital cellulitis had led to the development of sepsis. Continuous insulin infusion and antibiotic therapy in addition to respiratory and circulatory management improved his general condition, and his vison recovered to 1.2. Orbital cellulitis is associated with a high risk of vision loss; thus an early diagnosis and prompt treatment are essential. This is the only published report of odontogenic orbital cellulitis caused by K. Pneumoniae in a patient with diabetes. We herein report the case of a type2 diabetes mellitus patient with orbital cellulitis whose eyesight recovered due to early treatment.
