Abstract
BackgroundAdolescent pulmonary tuberculosis (TB) is considered inadequately recognized and underreported at high altitudes. This study aimed to investigate the clinical features of adolescent pulmonary TB patients at high altitudes in China.MethodA retrospective analysis was performed at Linzhi People’s Hospital. Patients recruited were newly diagnosed with pulmonary TB. Detailed information, including demographics, medical history, presenting symptoms, laboratory results and pulmonary images, was collected. Sputum samples were collected to detect Mycobacterium tuberculosis via the GeneXpert MTB/RIF assay.ResultA total of 63 adolescents and 192 adults were recruited. Compared with those in the adult group, typical TB-related manifestations were significantly less common in the adolescent group (all P < 0.05). The adolescent group had significantly more subclinical TB (23.8% vs. 8.3%, P = 0.001) and a higher previous tuberculosis exposure rate (38.8% vs. 8.3%, P < 0.001) than did the adult group. The erythrocyte sedimentation rate was significantly higher in the adolescent group than in the adult group (P = 0.026). Compared with adult patients, adolescent patients presented a lower rate of pleural thickening (P < 0.01). Compared with active adolescent patients, there were more female than male in the adolescent subclinical TB group (12/15 vs 27/48) and the positive rate of the sputum GeneXpert test was higher in subclinical TB group (6/15 vs 8/48).ConclusionAdolescent patients with pulmonary TB at high altitudes were prone to subclinical TB and have a higher previous TB exposure rate. Sputum GeneXpert test and ESR were important for the diagnosis of subclinical pulmonary TB.
Published Version
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