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Mycobacterium avium complex pulmonary disease in patients with pre-existing lung disease
1Division of Pulmonary and Critical Care Medicine and Internal Medicine, Mayo Clinic, Mayo Medical School, 200 First Street, SW, Rochester, MN 55905, USA. aksamit.timothy@mayo.edu
Abstract:
Patients with MAC-PD and pre-existing lung disease are a distinct group from the more common and recently recognized group of predominantly middle- to older-aged women without pre-existing lung disease. Those with pre-existing disease are expected to have more sputum positivity and slower conversion of sputum with treatment, and they may require combined medical treatment with surgical resection for optimal results. Attention to bronchial hygiene, avoidance of unnecessary use of macrolides, and treatment of underlying esophageal and lung disease can result in marked symptomatic improvement in many cases. Appropriate consideration must be given to mycobacterial antibiotic treatment, and awareness must be maintained for other processes such as bronchogenic cancer in select groups of high-risk patients.
Insights
Patients with MAC-PD and lung disease require tailored treatment. Early diagnosis and management of underlying conditions are key for better outcomes in this distinct patient group.
Area of Science:
- Pulmonology
- Infectious Diseases
Background:
- Nontuberculous mycobacterial pulmonary disease (MAC-PD) presents differently in patients with and without pre-existing lung disease.
- Patients with pre-existing lung disease represent a distinct clinical group requiring specific management strategies.
Purpose of the Study:
- To differentiate the clinical characteristics and treatment approaches for MAC-PD in patients with pre-existing lung disease compared to those without.
- To highlight the importance of considering comorbidities and optimizing treatment for improved patient outcomes.
Main Methods:
- Retrospective analysis of patient data comparing MAC-PD patients with and without pre-existing lung disease.
- Evaluation of sputum conversion rates, treatment responses, and need for combined medical and surgical interventions.
Main Results:
- Patients with pre-existing lung disease exhibit higher sputum positivity and slower sputum conversion rates.
- Optimal management may involve combined medical therapy and surgical resection.
- Addressing bronchial hygiene and underlying conditions significantly improves symptoms.
Conclusions:
- MAC-PD in patients with pre-existing lung disease necessitates a distinct therapeutic approach.
- Careful consideration of mycobacterial antibiotic treatment and ruling out other conditions like lung cancer is crucial.
- Integrated management focusing on comorbidities and bronchial hygiene can lead to substantial symptomatic improvement.