PMID- 37456472 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230718 IS - 2168-8184 (Print) IS - 2168-8184 (Electronic) IS - 2168-8184 (Linking) VI - 15 IP - 6 DP - 2023 Jun TI - An Unusual Case of Acute Cholecystitis Caused by Lactobacillus paracasei. PG - e40334 LID - 10.7759/cureus.40334 [doi] LID - e40334 AB - Lactobacillus paracasei is a gram-positive rod commonly found in probiotic foods and is well known to promote healthy gastrointestinal tracts. However, there have been a few case reports that have found Lactobacillus paracasei to be the causative agent in complications such as endocarditis, meningitis, peritonitis, pancreatitis, and cholecystitis. We present the case of a 76-year-old woman who was admitted for decompensated heart failure. The patient also reported abdominal pain in the right upper quadrant. Ultrasound findings suggested cholelithiasis and a subsequent hepatobiliary iminodiacetic acid (HIDA) scan confirmed acute cholecystitis. This patient was not a good candidate for cholecystectomy because of the risk of cardiac complications. Hence, percutaneous cholecystostomy tube (PCT) placement was done, and the aspirate drained during the procedure was sent for pathology. This bile culture was positive for Lactobacillus paracasei and negative for any other kinds of bacteria. The incidence of Lactobacillus species-induced cholecystitis makes up only 0.08% to 0.2% of cases, which makes this an unusual case of acute cholecystitis caused by Lactobacillus paracasei. We will discuss several pathogenic aspects of Lactobacillus paracasei, such as its ability to generate biofilms, pore-forming toxins, drug transporters, and antibiotic susceptibility. CI - Copyright (c) 2023, Kim et al. FAU - Kim, Hui Un AU - Kim HU AD - Internal Medicine, American University of Antigua, New York City, USA. FAU - Choo, Byeongyeon AU - Choo B AD - Internal Medicine, American University of Antigua, New York City, USA. FAU - Pyakuryal, Arun AU - Pyakuryal A AD - Internal Medicine, Western Reserve Health Education/Northeast Ohio Medical University (NEOMED), Warren, USA. FAU - Shah, Munir AU - Shah M AD - Infectious Disease, Western Reserve Health Education/Northeast Ohio Medical University (NEOMED), Warren, USA. LA - eng PT - Case Reports DEP - 20230612 PL - United States TA - Cureus JT - Cureus JID - 101596737 PMC - PMC10338649 OTO - NOTNLM OT - acute cholecystitis OT - bile culture OT - gallbladder OT - lactobacillus OT - percutaneous cholecystostomy COIS- The authors have declared that no competing interests exist. EDAT- 2023/07/17 06:42 MHDA- 2023/07/17 06:43 PMCR- 2023/06/12 CRDT- 2023/07/17 04:24 PHST- 2023/06/07 00:00 [accepted] PHST- 2023/07/17 06:43 [medline] PHST- 2023/07/17 06:42 [pubmed] PHST- 2023/07/17 04:24 [entrez] PHST- 2023/06/12 00:00 [pmc-release] AID - 10.7759/cureus.40334 [doi] PST - epublish SO - Cureus. 2023 Jun 12;15(6):e40334. doi: 10.7759/cureus.40334. eCollection 2023 Jun.