JANN-YUAN WANGPO-REN HSUEHLee C.-H.Chang H.-C.LI-NA LEELiaw Y.-S.PAN-CHYR YANG2020-08-132020-08-1320061027-3719https://www.scopus.com/inward/record.uri?eid=2-s2.0-33646383386&partnerID=40&md5=d6d8ff521b8a79727dec48ddef4f5a57https://scholars.lib.ntu.edu.tw/handle/123456789/512535OBJECTIVE: Tuberculosis (TB) can sometimes present with consolidation in the lower lung field. This study was conducted to compare the manifestations of lower-lung-field TB (LLFTB) and other pulmonary TB. DESIGN: All new culture-proven TB patients with lower-lung-field consolidation from July 2001 through December 2002 were included. Age- and sex-matched TB patients with upper lung involvement were selected as controls. RESULTS: A total of 79 patients with LLFTB were included. Their mean age was 58.8 years; 46 were male. The clinical, radiographic and laboratory findings were similar in the LLFTB and the control groups, except that the LLFTB patients had less cavitation (P = 0.005). Patients with LLFTB were diagnosed (P = 0.051) and treated (P = 0.001) later than the control patients. The calibres of the trachea and both main bronchi were significantly smaller in the LLFTB group (P < 0.001). More patients with LLFTB developed segmental or lobar atelectasis during follow-up (P = 0.028). CONCLUSIONS: The manifestations of LLFTB are non-specific. The lower-lung involvement, the lower incidence of cavitation and the higher probability of segmental or lobar atelectasis implied that LLFTB was primary TB. A small bronchial calibre probably contributed to its development. ? 2006 The Union.[SDGs]SDG3adult; age determination; article; atelectasis; bronchus; controlled study; female; human; lower lung field tuberculosis; lung cavitation; major clinical study; male; priority journal; radiodiagnosis; sex difference; trachea; tuberculosis; Age Factors; Aged; Aged, 80 and over; Chi-Square Distribution; Female; Humans; Male; Middle Aged; Predictive Value of Tests; Prognosis; Radiography, Thoracic; Sex Factors; Survival Analysis; Taiwan; Tuberculosis, Pulmonaryjournal article167040432-s2.0-33646383386