Related Experiment Video
Updated: May 23, 2026

Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases
Published on: March 1, 2024
[Pulmonary actinomycosis. Fine needle aspiration diagnostic]
María del Carmen Gómez Mateo1, Andrea Urbano Salcedo, Morelva Toro de Méndez
1Servicio de Anatomía Patológica, Hospital Clínico Universitario de Valencia, España. mcgomezmateo@hotmail.com
Pulmonary actinomycosis, a rare lung infection, can mimic cancer. Early diagnosis through fine needle aspiration and antibiotic treatment leads to a full recovery.
Area of Science:
- Pulmonary Medicine
- Infectious Diseases
- Medical Microbiology
Background:
- Pulmonary actinomycosis is an uncommon bacterial infection.
- It often presents with nonspecific symptoms, mimicking other lung conditions.
Observation:
- Four cases of pulmonary actinomycosis in adults over 40 are presented.
- Patients exhibited symptoms including productive cough, dyspnea, hemoptysis, and prolonged fever.
- Radiological findings included segmental air-space consolidation, initially suggesting pneumonia or neoplasm.
Findings:
- Sputum cultures and Mantoux tests were negative.
- Fine needle aspiration (FNA) revealed filamentous colonies of Actinomyces.
- Antibiotic therapy led to symptom improvement and radiological resolution.
Implications:
- Pulmonary actinomycosis should be considered in patients with risk factors and subacute pneumonia symptoms.
- FNA is a valuable diagnostic tool, avoiding invasive procedures.
- Timely diagnosis and antibiotic treatment ensure a complete cure.
Related Concept Videos
Pulmonary Tuberculosis IV
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Atypical Pneumonia
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Sputum Studies I: Gram Stain, cytology, and Acid-fast smear and culture
Gram Stain
The Gram Stain is an integral part of sputum studies. It involves the staining of sputum, which permits...
Sputum Studies II: Culture and Sensitivity
Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
The test can identify various pathogens responsible for respiratory infections, including Streptococcus,...
Pneumonia III: Complications and Assessment
