Nebreda Mayoral, TAndrés Andrés, A GFuentes Carretero, SCalleja Fernández, RJimenez, M Soledad2021-02-052021-02-052018-03New Microbes New Infect. 2017 Dec 20;22:1-3.2052-2975http://hdl.handle.net/20.500.12105/11804Mycobacterium mantenii is a scotochromogenic non-tuberculous mycobacterium (NTM). Van Ingen et al. [1] described this bacterium for the first time in 2009 from the cervical lymph node samples from two immunocompetent children, respiratory samples from two adults and a water sample from Zambia. Since then, only two cases of disseminated M. mantenii infection have been described in immunocompromised patients [2], [3]. This mycobacterium has also been isolated in environmental samples from Ghana [4] and the Czech Republic [5]. In this report, two new cases involving immunocompetent girls with cervicofacial lymphadenitis due to M. mantenii are presented, and the reliability of matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) for identifying M. mantenii is evaluated.engVoRhttp://creativecommons.org/licenses/by-nc-nd/4.0/Cervicofacial lymphadenitisMalditof mass spectrotrometryMycobacterium manteniiAttribution-NonCommercial-NoDerivatives 4.0 Internacional29348923221-310.1016/j.nmni.2017.12.003New microbes and new infectionsopen access