# Beyond the Liver: A Unique Case of Pyogenic Liver Abscess Caused by Peptostreptococcus micros Penetrating the Chest Wall

## TL;DR

A rare case of liver abscess caused by Peptostreptococcus micros is reported, highlighting the need for surgical treatment when standard methods fail.

## Contribution

The paper presents a unique clinical case involving an uncommon pathogen in liver abscesses and advocates for surgical intervention in refractory cases.

## Key findings

- A liver abscess caused by Peptostreptococcus micros was diagnosed in a 37-year-old male.
- Percutaneous drainage failed, requiring surgical intervention for effective treatment.
- The case highlights the diagnostic challenges of rare pathogens in liver abscesses.

## Abstract

Liver abscesses are uncommon pyogenic infections with diverse microbiology, often involving enteric gram-negative bacilli such as Escherichia coli and Klebsiella pneumoniae. Standard management includes antibiotic therapy and abscess drainage. We present a case of a 37-year-old male with chronic right upper quadrant abdominal pain, who was found to have an enlarging liver mass infiltrating the chest wall and right-side chest ribs, ultimately diagnosed as a large pyogenic liver abscess (PLA) extending into the chest wall. Notably, the abscess was attributed to Peptostreptococcus micros, a rarely isolated pathogen in liver abscesses. Despite initial unsuccessful percutaneous drainage, surgical intervention proved necessary for definitive treatment. This case underscores the diagnostic challenge posed by uncommon pathogens in liver abscesses and emphasizes the effectiveness of surgical drainage in managing refractory cases.