Related Experiment Video
Updated: Jul 3, 2026

Deciphering and Imaging Pathogenesis and Cording of Mycobacterium abscessus in Zebrafish Embryos
Published on: September 9, 2015
Multiple brain abscesses due to Actinomyces species
Oluwadamilola A Adeyemi1, Numa Gottardi-Littell, Kenji Muro
1Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. o-adeyemi@northwestern.edu
Abstract:
We report a case of multiple brain abscesses due to Actinomyces species in a 35-year-old immunocompetent man who presented with a 2-month history of headache, diplopia, fever, and weight loss. Despite receipt of broad-spectrum antibiotics for over a month, he continued to have headaches and diplopia. He subsequently underwent right anterior temporal lobectomy and evacuation of abscesses. The diagnosis was aided by identification of sulfur granule on histopathological examination of cerebral cavitary lesion and Gram-positive filamentous rods seen on tissue-Gram stain.
Insights
This case study details a rare instance of multiple brain abscesses caused by Actinomyces species in an otherwise healthy adult. Diagnosis involved identifying sulfur granules and Gram-positive rods in brain tissue samples.
Area of Science:
- Neurology
- Infectious Diseases
- Microbiology
Background:
- Actinomyces species are rare causes of brain abscesses, particularly in immunocompetent individuals.
- Brain abscesses can present with non-specific neurological symptoms, complicating early diagnosis.
Observation:
- A 35-year-old immunocompetent male presented with a two-month history of headache, diplopia, fever, and weight loss.
- Symptoms persisted despite a month of broad-spectrum antibiotic treatment.
Findings:
- Surgical intervention, including right anterior temporal lobectomy and abscess evacuation, was performed.
- Histopathological examination revealed sulfur granules and Gram-positive filamentous rods, confirming Actinomyces infection.
Implications:
- This case highlights the importance of considering Actinomyces in the differential diagnosis of brain abscesses, even in immunocompetent patients.
- Prompt histopathological analysis is crucial for accurate diagnosis and targeted treatment of rare infectious etiologies.
More Related Videos
Related Concept Videos
Brain Abscess l: Introduction
Bacterial Meningitis
Bacterial Meningitis II: Pathophysiology
Bacterial Phylum Actinobacteria
Amebiasis
Bacterial Meningitis I: Introduction

