• Kotaro Yamada, Takafumi Koyauchi, Koshi Yokomura, Taiga Fujita, Hiroki Sugiyama, Ryo Shimota, Nobuhiro Shimura, Yuki Matsumoto, Shota Nakamura, Kinuyo Chikamatsu, Satoshi Mitarai, and Takafumi Suda.
• Department of Respiratory Medicine, Respiratory Disease Center, Seirei Mikatahara General Hospital, Japan.
• Intern. Med. 2024 Jul 1; 63 (13): 191319161913-1916.

AbstractNon-tuberculosis mycobacterial (NTM) pulmonary disease (NTM-PD) is quite common, and newly identified species are being reported increasingly frequently thanks to advances in identification technologies. A 56-year-old woman had mild sputum production showed bronchiectasis with multiple small nodules, consistent with NTM-PD, on chest computed tomography. Mycobacterial species were isolated from the specimens; however, conventional methods could not identify the species. We conducted whole-genome sequencing and identified the NTM isolates as Mycobacterium kiyosense, a species newly registered in 2023 from Japan. She was diagnosed with NTM-PD caused by M. kiyosense and received watchful waiting.

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