Tsukamurella tyrosinosolvens intravascular catheter-related bacteremia in a haematology patient: a case report.

Tsukamurella spp. are a rare but important cause of intravascular catheter- related bacteremia in immunocompromised pa- tients. The organism is an aerobic, Gram-posi- tive, weakly acid-fast bacillus that is difficult to differentiate using standard laboratory methods from other aerobic actinomycetales such as No- cardia spp., Rhododoccus spp., Gordonia spp., and the rapid growing Mycobacterium spp. We report a case of Tsukamurella tyrosinosolvens catheter-related bacteremia in a 51-year-old haematology patient who responded to treat- ment with imipenem and subsequent line re- moval. 16srRNA sequencing allowed for the prompt identification of this organism.