Non-tuberculous mycobacteria are opportunist pathogens increasingly recognised as a cause of pulmonary and extrapulmonary disease. Treatment is complicated, prolonged and potentially toxic, and due to a limited evidence base, potentially contentious and idiosyncratic. This is a retrospective review of nontuberculous mycobacteria cases in the NHS Borders Health Board between 1992 and 2010. We consider incidence, species identified, drug sensitivity testing and treatment outcome with reference to

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... the British and American Thoracic Society guidelines. Thirty-eight cases of non-tuberculous mycobacteria isolates were identified; 84.21% were pulmonary and 42.11% were Mycobacterium avium complex. Incidence rose from 1.92/100,000 in 1993 to 4.43/100,000 in 2010. The British Thoracic Society guidelines were followed in 45.45% of cases. A total of 36.36% were successfully treated with another 36.36% still being treated with antimicrobials. There is a clear need for more research on treatment for this group of 'emerging pathogens' and it remains to be seen if concordance with current guidelines will improve treatment outcomes.