# A Case Report Describing Hemophilus parainfluenza Recovered From Pleural Effusion

## TL;DR

A rare case of Hemophilus parainfluenza causing pleural effusion is reported, showing the bacteria can lead to this condition without typical symptoms.

## Contribution

This case report adds to the limited documentation of Hemophilus parainfluenza's role in pleural effusions.

## Key findings

- Hemophilus parainfluenza was isolated from pleural fluid in a patient without pneumonia.
- Antibiotic treatment successfully resolved the effusion, indicating bacterial causation.

## Abstract

Hemophilus parainfluenza, a less common pathogen typically found in the oropharyngeal flora, has been associated with various clinical conditions. However, its role in pleural effusions remains scarcely documented. We present a unique case of a 42-year-old female with a history of asthma, hypertension, and obesity who presented with epigastric pain and a moderate right-sided pleural effusion. Hemophilus parainfluenza was isolated from the pleural fluid despite an atypical, asymptomatic presentation without pneumonia. Antibiotic treatment led to a positive response, highlighting the importance of recognizing Hemophilus parainfluenza as a potential causative agent in pleural effusion cases.