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Non-tuberculosis Mycobacterial Pulmonary Disease Caused by Mycobacterium kiyosense, a New Species
Kotaro Yamada1, Takafumi Koyauchi1, Koshi Yokomura1
1Department of Respiratory Medicine, Respiratory Disease Center, Seirei Mikatahara General Hospital, Japan.
Abstract:
Non-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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