Related Experiment Video
Updated: Aug 15, 2026

Imaging InlC Secretion to Investigate Cellular Infection by the Bacterial Pathogen Listeria monocytogenes
Published on: September 19, 2013
Liver abscess caused by Lactococcus lactis cremoris: a new pathogen
J Antolín1, R Cigüenza, I Salueña
1Internal Medicine Service, San Carlos Clinical Hospital, Madrid, Spain. pepe.antolin@terra.es
Insights
This study reports the first liver abscess case caused by Lactococcus lactis cremoris in an immunocompetent adult. Treatment with antibiotics and catheter drainage led to successful resolution.
Area of Science:
- Infectious Diseases
- Microbiology
- Hepatology
Background:
- Liver abscesses are serious infections, typically caused by bacteria.
- Lactococcus lactis cremoris is a bacterium commonly found in dairy products.
Purpose of the Study:
- To report the first documented case of liver abscess caused by Lactococcus lactis cremoris.
- To highlight the successful management of this rare infection in an immunocompetent patient.
Main Methods:
- Case report detailing a patient with liver abscess.
- Microbiological identification of Lactococcus lactis cremoris.
- Treatment regimen involving antibiotics and percutaneous catheter drainage.
Main Results:
- Successful identification of Lactococcus lactis cremoris as the causative agent.
- Clinical improvement and complete resolution of the liver abscess following treatment.
- Absence of recurrence at follow-up.
Conclusions:
- Lactococcus lactis cremoris can be a rare cause of liver abscess, even in immunocompetent individuals.
- Prompt diagnosis and appropriate antimicrobial therapy combined with drainage are effective treatment strategies.
- This case expands the spectrum of pathogens implicated in liver abscess formation.
Abstract:
We describe the first case reported in the literature of liver abscess due to Lactococcus lactis cremoris in an immunocompetent adult patient. The patient was treated with catheter drainage and antibiotics, which resulted in improvement and resolution.
Related Concept Videos
Bacterial Phylum Actinobacteria
Bacterial Phylum Firmicutes
Microbes in Food Production
Microbes in the Production of Fermented Foods
Reservoir of Infection
Brain Abscess l: Introduction

