Mixta calida, not only an environmental bacterium, but a potential opportunistic threat: Case report of an osteitis with skin necrosis and mini review of the literature

Mixta calida, not only an environmental bacterium, but a potential opportunistic threat: Case report of an osteitis with skin necrosis and mini review of the literature

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Background: Mixta calida, previously known as Pantoea calida, is an environmental bacterium rarely associated with human pathologies.Rare case reports mention sepsis, meningitis and implantable defibrillator infection.Case presentation: A 67-year-old female with multiple comorbidities was referred to the emergency room for a comminuted fracture of both right tibial plateaus secondary to a fall and for which she benefited from click here an external fixator.After removal of the fixator, failure of osteosynthesis and placement of a new fixator, a skin necrosis appeared and a propeller distal anteromedial thigh perforator flap was performed.

After 6 weeks, she presented a necrosis of the flap and an osteitis.The bone biopsy was positive with pure M.calida.The patient underwent an above-knee amputation, but 6 weeks later the wound was dehiscent and again positive with pure M.

calida.Conclusions: Serious infections due to M.calida are uncommon but can occur in immunocompromised patients.This case here illustrates the first reported osteitis and skin necrosis due to M.

calida.