nontuberculous
- adjective
- /ˌnɒnˈtjuːbərkjələs/
- Specialized
- A positive PPD skin test can result from nontuberculous mycobacterial infections, owing to a high degree of cross-reactivity with the tuberculosis antigen in the standard PPD.
- nontuberculous mycobacteria
Examples
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Patients with cervical lymphadenitis due to nontuberculous mycobacteria can present in an identical fashion and may be difficult to differentiate from those with M. tuberculosis infection.
Academic text (1995) -
Nontuberculous mycobacteria can cause infections in individuals with weakened immune systems.
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The number of organisms present suggests that these are nontuberculous mycobacteria or that the patient is severely immunocompromised.
Academic text (1995) -
Other antimicrobial medications, such as ciprofloxacin and clarithromycin, have been used with some success for these nontuberculous organisms.
Academic text (1995) -
Fortunately, cervical lymphadenopathy involving nontuberculous mycobacterium almost exclusively occurs in children under 12 years of age.
Academic text (1995) -
AFB smear results can be useful, although they cannot differentiate between tuberculous and nontuberculous mycobacteria (Figure 2).
Academic text (1995) -
Nontuberculous mycobacteria (NTM) and, in particular, the Mycobacterium abscessus group are recognized as emerging respiratory pathogens among patients with cystic fibrosis.
Academic text (2014) -
Research indicates that nontuberculous organisms are becoming more prevalent in urban areas.
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Healthcare providers should consider nontuberculous mycobacteria when diagnosing chronic respiratory infections.
Surface Forms
Morphology
nontuberculous = tuberculous (transparent) = non + tuberculous
The productive negative prefix 'non-' is applied to the adjective 'tuberculous', so the meaning 'not tuberculous' is directly derivable.
Etymology
Nontuberculous starts with non- meaning 'not', and the rest comes from tubercle, a small 'lump' that gave its name to tuberculosis. So nontuberculous describes bacteria or infections that are 'not' caused by tuberculosis.