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  2. Mycobacterium avium-intracellulare infection - Wikipedia

    en.wikipedia.org/wiki/Mycobacterium_avium...

    M. avium, M. intracellulare, and M. chimaera are each saprotrophic organisms present in soil and water; entry into hosts is usually via the gastrointestinal tract, but also can be via the lungs. MAC infections can cause fevers, diarrhea, malabsorption, as well as loss of appetite and weight loss, and can disseminate to the bone marrow. MAI is ...

  3. Mycobacterium avium complex - Wikipedia

    en.wikipedia.org/wiki/Mycobacterium_avium_complex

    MAC bacteria enter most people's body when inhaled into the lungs or swallowed, but only cause infection in those who are immunocompromised or who have severe lung disease such as those with cystic fibrosis or chronic obstructive lung disease (COPD). [3] MAC infection can cause COPD and lymphadenitis, and can cause disseminated disease ...

  4. Nontuberculous mycobacteria - Wikipedia

    en.wikipedia.org/wiki/Nontuberculous_mycobacteria

    Nontuberculous mycobacteria (NTM) are all the other mycobacteria that can cause pulmonary disease resembling tuberculosis, lymphadenitis, skin disease, or disseminated disease. Although over 150 different species of NTM have been described, pulmonary infections are most commonly due to Mycobacterium avium complex (MAC), Mycobacterium kansasii ...

  5. Tree-in-bud sign - Wikipedia

    en.wikipedia.org/wiki/Tree-in-bud_sign

    This includes fungal infections, mycobacterial infections such as tuberculosis or mycobacterium avium intracellulare, bronchopneumonia, chronic aspiration pneumonia, cystic fibrosis or cellular impaction from bronchovascular spread of malignancy, as can occur with breast cancer, leukemia or lymphoma. [2]

  6. Lung cavity - Wikipedia

    en.wikipedia.org/wiki/Lung_cavity

    Mycobacterium avium complex (MAC) is the most common cause of NTM lung disease in most countries, including the United States. [6] Classically, MAC infection results in either upper lobe cavities in male smokers with COPD or bronchiectasis in thin, older women; however, it is possible to have both cavities and bronchiectasis in the same patient ...

  7. Complement membrane attack complex - Wikipedia

    en.wikipedia.org/wiki/Complement_membrane_attack...

    Membrane attack complex (Terminal complement complex C5b-9) A membrane attack complex attached to a pathogenic cell The membrane attack complex (MAC) or terminal complement complex (TCC) is a complex of proteins typically formed on the surface of pathogen cell membranes as a result of the activation of the host's complement system, and as such is an effector of the immune system.

  8. Mycobacteroides abscessus - Wikipedia

    en.wikipedia.org/wiki/Mycobacteroides_abscessus

    M. abscessus can cause lung disease, skin infections, central nervous system infections, bacteremia, eye infections, and other, less common diseases. [7] Chronic lung disease occurs most commonly in vulnerable hosts with underlying lung disease such as cystic fibrosis, bronchiectasis, and prior tuberculosis. Clinical symptoms of lung infection ...

  9. Opportunistic infection - Wikipedia

    en.wikipedia.org/wiki/Opportunistic_infection

    Mycobacterium avium complex (MAC) is a group of two bacteria, M. avium and M. intracellulare, that typically co-infect, leading to a lung infection called mycobacterium avium-intracellulare infection. [11] [12] Mycobacterium tuberculosis is a species of bacteria that causes tuberculosis, a respiratory infection. [13]