title: Newly detected pulmonary nontuberculous mycobacterial infection and peripheral lung cancers in patients during follow-up of idiopathic interstitial pneumonia: comparison of CT findings.
abstract: This article describes the difference between the computed tomography (CT) findings in patients with newly detected pulmonary nontuberculous mycobacterial infection (NTM-IIP) and Cancer-IIP. We retrospectively evaluated 35 NTM-IIP and 78 Cancer-IIP patients in reference to their null idiopathic interstitial pneumonia CT (n = 113), using >10 years of data. Two independent radiologists analyzed the CT characteristics and the axial location of the main opacity. The interobserver agreement was good (κ > 0.771). The NTM-IIP patients were older (P = 0.034). The median size of the main opacity in the NTM-IIP (27 mm; 11-73) was larger (19 mm; 5-60; P = 0.002). Consolidation (n = 30; 85.7%; odds ratio [OR], 45) and cavities (n = 14; 40%, OR, 25) were more common in NTM-IIP (all P < 0.001). The midst of the fibrotic cysts including honeycomb cysts (n = 16; 45.7%, OR, 4.95) was more common in NTM-IIP (P = 0.006). NTM-IIP appeared larger, with more frequent consolidation and cavities, and was more likely to have been located in the midst of the fibrotic cysts including honeycomb cysts at the CT, which showed that it was older than Cancer-IIP.
authors.affiliation: From the Department of Radiology and Research Institute of Radiology (SYO, MYK); Department of Pulmonary and Critical Care Medicine (TSS, C-MC, DSK); Department of Oncology (C-MC), University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea; and Hallym University College of Medicine (HJH), Hallym University, Sacred Heart Hospital, Anyang, and Department of Healthcare Management (S-SK), Cheongju University, Cheongju, South Korea.
authors.forename: Sang Young
authors.initials: SY
authors.lastname: Oh
authors.forename: Mi Young
authors.initials: MY
authors.lastname: Kim
authors.forename: Hye Jeon
authors.initials: HJ
authors.lastname: Hwang
authors.forename: Tae Sun
authors.initials: TS
authors.lastname: Shim
authors.forename: Chang-Min
authors.initials: CM
authors.lastname: Choi
authors.forename: Sung-Soo
authors.initials: SS
authors.lastname: Kim
authors.forename: Dong Soon
authors.initials: DS
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D054988:Idiopathic Interstitial Pneumonias / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008168:Lung / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D009165:Mycobacterium Infections, Nontuberculous / Q000175:diagnosis* / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed
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