Leuconostoc pseudomesenteroides Bacteremiae in a Patient with Malignancy: A Case Report

Leuconostoc pseudomesenteroides Bacteremiae in a Patient with Malignancy: A Case Report

Leuconostoc spp. are members of Streptococcus family that can be found in plants and dairy products as well as in feces and vaginal flora of humans. Unlike other streptococci, they have intrinsic resistance to vancomycin. Although it is a very rare pathogen of humans, it may cause serious infections...

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Bibliographic Details
Main Authors: Gülşen İSKENDER, Sebahat ÇEKEN, Cihat OĞAN, Ayla YENİGÜN, Fazilet DUYGU
Format: Article
Language:Turkish
Published: Galenos Yayinevi 2015-12-01
Series:Mediterranean Journal of Infection, Microbes and Antimicrobials
Subjects:
they have intrinsic resistance to vancomycin. Although it is a very rare pathogen of humans
it may cause serious infections
especially in immunocompromised hosts. In this paper
we present a case of soft tissue infection with bacteremia caused by Leuconostoc pseudomesenteroides that was cured with daptomycin. A forty-year-old obese woman was admitted with fever and cellulitis of right arm. She had a history of invasive ductal carcinoma operation on her right breast and chronic right arm lymphedema. Piperacillin-tazobactam was initiated. After 48 hours
the clinical findings did not improve and teicoplanin was added to the therapy. At the 72th hour
fever continued
cellulitis spread to the chest wall and bullous lesions appeared on the right hand. The treatment was switched to daptomycin. Leuconostoc pseudomesenteroides was isolated in blood cultures of the patient. It was susceptible to linezolid
ampicillin minimum inhibitory concentration (MIC=2)
ciprofloxacin (MIC <0.5) and erythromycin (MIC=0.25). It was resistant to vancomycin and clindamycin (MIC=2). On the second day of daptomycin treatment
the patient was afebrile. On the 14th day of daptomycin treatment
the patient was discharged with nearly complete regression of erythema
crusted bullous lesions
and normal laboratory findings. In conclusion
Leuconostoc spp. may cause serious infections in patients with risk factors. This microorganism must be kept in mind when Gram-positive bacteria with the characteristics of Streptococcus spp
Leuconostoc pseudomesenteroides
bacteremia
cellulitis
daptomycin
immunecompromized host
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