Related Experiment Video
Updated: Jul 28, 2026
09:52
Histological Quantification to Determine Lung Fungal Burden in Experimental Aspergillosis
Published on: March 9, 2018
Actinomyces meyeri presenting as an asymptomatic lung mass
Mycopathologia
|February 15, 1984
Summary
A chest X-ray revealed a lung mass in a 55-year-old man. Diagnosis confirmed Actinomyces meyeri, a rare bacterial lung infection, not cancer.
Area of Science:
- Medical Microbiology
- Pulmonology
- Surgical Pathology
Background:
- Presents a case of a 55-year-old male smoker with a history of alcohol abuse.
- Patient admitted for elective herniorrhaphy with incidental finding on chest X-ray.
Observation:
- Routine chest X-ray revealed an isolated left upper lobe mass.
- Initial laboratory tests were unrevealing, raising suspicion for carcinoma.
Findings:
- Surgical specimen analysis showed a lobular mass with microabscesses.
- Microscopic examination revealed grains consistent with actinomycosis.
- Culture confirmed the presence of Actinomyces meyeri.
Implications:
- Highlights the importance of considering rare infections in lung mass differential diagnoses.
- Actinomyces meyeri can present as an isolated pulmonary mass, mimicking malignancy.
- Successful identification and treatment of rare bacterial lung infections are crucial.
More Related Videos
15:01Confocal Laser Scanning Microscopy-Based Quantitative Analysis of Aspergillus fumigatus Conidia Distribution in Whole-Mount Optically Cleared Mouse Lung
Published on: September 18, 2021
10:06Efficient Method for Imaging Murine Lungs that Preserves Spatial Dynamics of Fungal Spores in the Airways
Published on: December 13, 2024
Related Concept Videos
01:28Pulmonary Tuberculosis II
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
01:14Atypical Pneumonia
Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
01:23Tuberculosis
Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...