Journal of Pediatric Infectious Diseases 2020; 15(02): 110-112
DOI: 10.1055/s-0038-1641604
Case Report
Georg Thieme Verlag KG Stuttgart · New York

A Rare Pathogen in Acute Appendicitis: Two Cases with Comamonas testosteroni Infection and Literature Review

Ayşe Sağmak Tartar
1  Department of Infectious Diseases and Clinical Microbiology, Firat University School of Medicine, Elazığ, Turkey
Tugay Tartar
2  Department of Pediatric Surgery, Firat University School of Medicine, Elazığ, Turkey
› Author Affiliations
Further Information

Publication History

09 November 2017

04 March 2018

Publication Date:
11 April 2018 (online)


Comamonas testosteroni (formerly Pseudomonas testosteroni) is a common environmental bacterium, which is not a part of the human microbiome. It is rarely found as an infectious agent in clinical practice. The bacterium has low virulence potency and rarely causes human disease. Although this agent is generally considered to be of low virulence, reports of infections with C. testosteroni are increasing. With the exception of intra-abdominal infections, C. testosteroni is mainly reported as an opportunistic pathogen in immunocompromised patients. However, C. testosteroni has also been reported as a pathogen in patients with appendicitis (especially when perforated), suggesting that this bacterium may belong to the normal intestinal microbiota of some individuals. In this article, we present two children with appendicitis in whom C. testosteroni was isolated from appendix tissue samples.