Is malignant otitis externa on the increase? A retrospective review of cases.

We performed a retrospective review of all patients with malignant otitis externa (MOE) treated in our center between July 2004 and December 2012 to evaluate the current epidemiology in our region and to ascertain causative factors associated with the perceived increase in the number of cases diagnosed. Eleven patients were identified (5 men and 6 women), with a mean age of 77 years (range: 38 to 97 years). Diabetes was present in 36%. Pseudomonas aeruginosa was the causative organism in 64% of cases; all pathogens were sensitive to ciprofloxacin. We noted a significant increase in the diagnostic frequency of MOE during the study period (p = 0.0027) No obvious causative factors were identified. Due to the mortality associated with this condition, further studies are required to establish national trends.