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| | Korean Journal of Radiology |
 | | Except for the M. tuberculosis complex and M. leprae, mycobacteria are referred to collectively as nontuberculous mycobacteria (NTM); previous names for this group of organisms include 'environmental mycobacteria,' 'atypical mycobacteria,' or 'mycobacteria other than tuberculosis,' though the term NTM is preferred (1, 2). |
 | | Unlike M. tuberculosis, which is an obligate human pathogen with no environmental reservoir, NTM are commonly isolated from environmental sources such as water and soil, and until the second half of the previous century, occasional isolates of NTM were thus largely considered contaminants or colonizers (1, 3). |
 | | In developing countries, where the incidence of pulmonary tuberculosis is much higher than that of NTM pulmonary disease, the initiation of presumptive antituberculous treatment, especially in smear-positive patients prior to the identification of isolates, is common practice. |
| www.kjronline.org /abstract/view_articletext.asp?year=2002&page=145 (5418 words) |
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