[Septic-embolic and septic metastatic brain abscess].

Area of Science:

• Neurology
• Infectious Diseases
• Radiology

Context:

• Hematogenous spread of pathogens can lead to brain infections.
• Septic emboli are a primary mechanism for pathogen dissemination to cerebral vessels.
• Bacterial endocarditis and prosthetic heart valve infections are common sources.

Purpose:

• To describe the pathogenesis and imaging characteristics of septic-embolic brain abscesses.
• To highlight the superiority of MRI in visualizing abscess development.
• To emphasize the importance of follow-up imaging in managing brain abscesses.

Summary:

• Septic emboli, often from cardiac sources, can cause focal encephalitis and progress to septic-embolic brain abscesses.
• These abscesses can manifest as multiple lesions and are associated with various septic conditions and bacteremia.
• MRI effectively depicts the evolving stages of brain abscesses, from early encephalitis to encapsulated lesions, aiding in diagnosis and treatment monitoring.

Impact:

• Improved understanding of brain abscess formation and spread.
• Enhanced diagnostic capabilities through advanced imaging techniques.
• Guidance for effective medical management and follow-up protocols for brain abscess patients.