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Deep neck infection due to Lactococcus lactis cremoris: a case report
M Koyuncu1, I C Acuner, M Uyar
1Department of Otorhinolaryngology, Ondokuz Mayis University Medical School Kurupelit Campus, Samsun, Turkey.
Summary
This case report details a rare deep neck infection caused by Lactococcus lactis subsp. cremoris, linked to unpasteurized milk consumption in a patient with a buccal tumor. Prompt antibiotic treatment led to a full recovery.
Area of Science:
- Microbiology
- Infectious Diseases
- Oral Oncology
Background:
- Deep neck infections (DNIs) are serious conditions often stemming from odontogenic or oropharyngeal sources.
- Lactococcus lactis subsp. cremoris is a lactic acid bacterium typically found in fermented dairy products and is not a common pathogen for DNIs.
- Unpasteurized milk consumption is a known risk factor for various infections, but its association with DNIs caused by this specific bacterium is undocumented.
Observation:
- A patient with a buccal mucosa tumor developed a deep neck infection.
- The infection was identified as being caused by Lactococcus lactis subsp. cremoris.
- The patient reported consuming unpasteurized milk prior to the onset of symptoms.
Findings:
- This represents the first documented case of a deep neck infection attributed to Lactococcus lactis subsp. cremoris.
- The infection in the patient with a buccal mucosa tumor was successfully treated.
- Anti-infective therapy involving ceftriaxone and metronidazole achieved complete resolution of the infection.
Implications:
- Highlights a novel causative agent for deep neck infections, expanding the spectrum of known pathogens.
- Underscores the potential infectious risks associated with consuming unpasteurized dairy products, even with less common bacteria.
- Suggests that patients with oral tumors may be more susceptible to unusual infections, warranting broader diagnostic considerations.