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Fungal infections in COPD

Fungal infections in COPD. Wouter Meersseman, MD,PhD Department of General Internal Medicine and Intensive Care Medicine University Hospital Gasthuisberg Leuven, Belgium. Scope of the problem. What do we know?

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Fungal infections in COPD

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  1. Fungal infections in COPD Wouter Meersseman, MD,PhD Department of General Internal Medicine and Intensive Care Medicine University Hospital Gasthuisberg Leuven, Belgium.

  2. Scope of the problem • What do we know? • Aspergillosis well known disease in hematological and solid organ transplant patients • Specific diagnostic tests available in hematological patients • Where do we fail in our knowledge? • Prevalence in COPD patients and other less immunocompromised patients • Disease presentations in COPD patients • Treatment options in COPD patients

  3. Acute IA ABPA Allergic sinusitis Interaction of Aspergillus with the hostA unique microbial-host interaction Subacute IA Frequency of aspergillosis Frequency of aspergillosis Tracheobronchitis Aspergilloma Chronic cavitary Chronic fibrosing Immune dysfunction Immune hyperactivity Normal immunefunction . www.aspergillus.man.ac.uk

  4. Types of disease in COPD • Aspergilloma • Chronic pulmonary aspergillosis • chronic cavitary aspergillosis • chronic fibrocavitary aspergillosis • chronic necrotizing aspergillosis • Subacute pulmonary invasive aspergillosis

  5. 1. Aspergilloma = conglomeration within a pre-existing pulmonary cavity of hyphae, mucus and cellular debris

  6. 1. Aspergilloma Benign, asymptomatic colonization , IPA rarely develops Occurs in 10% of patients with pre-existing cavities (bullae, TBC)

  7. 1. Aspergilloma • Precipitins: > 95% sensitivity • Fatal asphyxiation due to massive hemoptysis may occur • Poor prognostic signs: - severity of underlying lung disease - increasing size and number of cavities - immunosuppression - increasing IgG titers - sarcoidosis - HIV

  8. 2. Chronic fibrocavitary aspergillosis: case 1 • 45-old smoker with COPD, stage III • On fluticasone and atropine inhalers • Right upper lesion in 2001 • Underwent lobectomy • Histology: 2-cm cavity with necrotic contents, pleural and parenchymal fibrosis • No signs of malignancy • Cultures for Mycobacterium and Aspergillus negative

  9. 2. Chronic fibrocavitary aspergillosis: case 1 • Postoperatively (2001- 2003): never admitted with an exacerbation • Treated twice with short course systemic steroids • 2003-2005: intermittent hemoptysis, mild fatigue and some weight loss, no fever • Lab results: mild to absent inflammation • CT scan of the thorax

  10. 2. Chronic fibrocavitary aspergillosis: case 1 • Bronchoscopy: no lesions, cultures yield Aspergillus fumigatus, galactomannan OI 5 in BAL, < 0.1 in serum • Aspergillus precipitins 3 + • Fine needle aspiration and transbronchial biopsy: hyphae without parenchymal reaction

  11. 2. Chronic fibrocavitary aspergillosis • Affects middle-aged persons • Only mildly immunosuppressed (COPD, alcoholism, diabetes) • Indolent progressive course • Chronic cough, hemoptysis, weight loss and fatigue • No invasion in tissue or occasionally non-angioinvasive hyphae in tissue • Many different radiological features (cavitary, fibrosing and necrotizing)

  12. Chronic cavitary aspergillosis in a patient with old TBC

  13. Chronic cavitary aspergillosis in a patient with old TBC

  14. Chronic fibrosing aspergillosis in a COPD patient

  15. Fibrocavitary aspergillosis postpneumonectomy for chronic aspergillosis

  16. Chronic fibrocavitary aspergillosis: treatment options • Stop inhaled corticosteroids? • Systemic antifungals? Which ones? How long? • Intracavitary instillation of antifungals? • Interferon-gamma? • Surgery? • Combination of all the above treatments? Denning DW. Chronic cavitary and fibrosing aspergillosis. Clin Infect Dis 2003:37, S265

  17. Vertigo trial: treatment of chronic aspergillosis with voriconazole • 41 patients with chronic pneumonia and Aspergillus spp. in airway sample • Underlying lung disease: - COPD (n=18) - prior tuberculosis (n=11) - bronchiectasis (n=6) - pneumothorax (n=5), - lung cancer (n=3) - sarcoidosis (n=3) - postradiotherapy (n=2) Cadranel J, et al. Phase II trial of voriconazole for treatment of chronic pulmonary aspergillosis. ATS May 2009

  18. Vertigo trial: treatment of chronic aspergillosis with voriconazole • Underlying risk factors: - corticosteroids inhaled (n=12), systemic (n=6) - alcoholic abuse (n=4) - diabetes (n=2) - other (n=11) - none identified (n=12) Cadranel J, et al. Phase II trial of voriconazole for treatment of chronic pulmonary aspergillosis. ATS May 2009

  19. Vertigo trial: treatment of chronic aspergillosis with voriconazole Voriconazole oral route Two doses of 400 mg 12 hours apart followed by maintenance doses of 200 mg twice daily At least 6 months duration, to be continued 3 months after the best achievable response Maximum duration of treatment could not exceed 12 months Cadranel J, et al. Phase II trial of voriconazole for treatment of chronic pulmonary aspergillosis. ATS May 2009

  20. Proven and probable IPA without malignancy in ICU (’00-’03) Meersseman et al. Invasive aspergillosis in critically ill patients without malignancy. AJRCCM 2004

  21. COPD patients: benefits of ICU? • 23 pts, 16 proven, 7 probable (repeated isolation) • recent steroid treatment, or intensification of steroid treatment • severe bronchospasm (12/23) • all required mechanical ventilation • diagnosis classified as • confirmed • positive lung tissue biopsy and/or autopsy • probable • repeated isolation of Aspergillus from the airways with consistent clinical and radiological findings • mortality 100% * Bulpa P. COPD patients with invasive pulmonary aspergillosis: benefits of intensive care? Intens Care Med 2001; 27: 59-67

  22. Clinical characteristics of IPA in COPD Bulpa et al. IPA in patients with COPD. Eur Resp J 2007; 30: 782

  23. Clinical characteristics Bulpa et al. IPA in patients with COPD. Eur Resp J 2007; 30: 782

  24. Why frequent in ICU? Why such a high mortality? • Most severeexacerbations end up in ICU • Steroids are givenfor a lot of reasons • We don’tthink of aspergillosis • Poorsensitivity of culture • We don’tknowwhat to do with a positive culture or direct examination • Radiologydoesn’t help us Meersseman W, Lagrou K, Maertens J. Invasive aspergillosis in ICU. Clin Infect Dis ‘07

  25. Significance of culture positivity • IA diagnosed in 45/477 patients with “underlying pulmonary disease and positive culture” • Positive predictive value lower than in haematology patients (around 40%) • Colonisationvs true disease ??? • Temporary passage ? • Long-term benign carriage ? Perfect JR, et al. Clin Infect Dis 2001; 3:1824-1833.

  26. Halo sign: only applicable to neutropenic patients • Radiology in ICU “clouded” by atelectasis, pleural effusions, ARDS • Necrotizing, cavitating lesions: not specific

  27. Corticosteroids vs neutropenia: a different lung disease Balloy et al. Differences in patterns of infection and inflammation. Infect Immun 2005; 73:494

  28. As a consequence … • Inflammatory reaction: - leads to encapsulation of the process - prevents at least partially invasion of hyphae in the blood (minor coagulation necrosis) - prevents leakage of antigens in blood - probably makes antigen markers in blood less suitable for diagnosis

  29. Proven and probable IPA without malignancy in ICU (’00-’03) Meersseman et al. Invasive aspergillosis in critically ill patients without malignancy. AJRCCM 2004

  30. Performance GM in serum and BAL Meersseman et al. Galactomannan in BAL in ICU. AJRCCM Jan 2008

  31. Summary • Three disease entities in COPD - aspergilloma - chronic aspergillosis - subacute invasive aspergillosis • Controversial topic: no clear guidelines • Studies warranted in - chronic aspergillosis: benefits of longterm triazole therapy - subacute IPA: pre-emptive approach based on galactomannan in BAL

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