biostudies-literatureKuge TJapan Agency for Medical Research and Development888https://www.ebi.ac.uk/biostudies/studies/S-EPMC7690136biostudies-literatureUnknown20(1)<h4>Background</h4>Non-tuberculous mycobacterial pulmonary disease (NTM-PD) is becoming a significant health burden. Recent advances in analysis techniques have allowed the accurate identification of previously unknown NTM species. Here, we report a case of NTM-PD caused by a newly identified mycobacteria in an immunocompetent patient.<h4>Case presentation</h4>A 44-year-old woman was referred to our hospital due to the frequent aggravation of her chronic respiratory symptoms, with NTM-PD-compatible computed tomography findings. Unidentified mycobacterium was repeatedly isolated from respiratory specimens and we diagnosed her as NTM-PD of unidentified mycobacterium. Subsequent whole-genome analysis revealed that the unidentified mycobacterium was a novel mycobacterium genetically close to MBMC infectious diseasesPulmonary disease caused by a newly identified mycobacterium: Mycolicibacterium toneyamachuris: a case report.PMC7690136JP20fk0108129Kuge TKawasaki TAkiba EKagawa HKitada SFukushima KMatsumoto YHaduki KKawano AMatsuki TMotooka DTsujino KNitta TKida HSaito HMiki MIida TMiki KNakamura SAbe YfalsePulmonary disease caused by a newly identified mycobacterium: Mycolicibacterium toneyamachuris: a case report.<h4>Background</h4>Non-tuberculous mycobacterial pulmonary disease (NTM-PD) is becoming a significant health burden. Recent advances in analysis techniques have allowed the accurate identification of previously unknown NTM species. Here, we report a case of NTM-PD caused by a newly identified mycobacteria in an immunocompetent patient.<h4>Case presentation</h4>A 44-year-old woman was referred to our hospital due to the frequent aggravation of her chronic respiratory symptoms, with NTM-PD-compatible computed tomography findings. Unidentified mycobacterium was repeatedly isolated from respiratory specimens and we diagnosed her as NTM-PD of unidentified mycobacterium. Subsequent whole-genome analysis revealed that the unidentified mycobacterium was a novel mycobacterium genetically close to M2020-01-01T00:00:00Z2020 Nov2026-05-28T11:26:56.388Z2025-02-19T03:26:21.139ZS-EPMC76901363323893410.1186/s12879-020-05626-y