Methicillin Resistant Staphylococcus Aureus Infection as a causative agent of fistula formation following total laryngectomy for advanced head & neck cancer

Aims: The purpose of this paper was to investigate the impact of Methicillin Resistant Staphylococcus Aureus (MRSA) infection in the aetiology of pharyngo-cutaneous fistula (PCF) formation following total laryngectomy for advanced laryngeal cancer. Methods: This was a retrospective uncontrolled case study series of 31 consecutive patients based in a single institution tertiary referral head and neck oncology centre. Results: Pharyngo-cutaneous fistulas (PCF) following total laryngectomy occurred in 10 (32%) patients. MRSA was identified in 80% of patients with a PCF compared to 9% of patients that did not develop a fistula (p = 0.0001255 Fisher exact test). MRSA infection (p = 0.00012) and previous radiotherapy (p = 0.00025) were the only significant factors found to be important in fistula formation on multivariate analysis. Post-operative infections such as cellulitis, chest infection and carotid fistula were also associated with MRSA infections. Conclusion: MRSA infection following total laryngectomy for laryngeal cancer can lead to potential serious complications such as PCF. Patients who underwent total laryngectomy following radiotherapy failure are at a higher risk of acquiring MRSA.