Multifocal extracranial mycotic aneurysms in a patient with endocarditis

Area of Science:

• Cardiology
• Infectious Diseases
• Vascular Surgery

Background:

• Streptococcus gallolyticus (formerly S. bovis) is a recognized cause of infective endocarditis, often associated with underlying gastrointestinal pathology.
• Infective endocarditis can lead to serious complications, including septic embolization and the formation of mycotic aneurysms.
• Surgical intervention, such as valve replacement, is sometimes necessary for managing complicated endocarditis.

Observation:

• A 44-year-old man presented with Streptococcus gallolyticus endocarditis.
• The patient required surgical mitral valve replacement due to the severity of the endocarditis.
• Following successful treatment and resolution of the endocarditis, the patient developed multifocal extracranial mycotic aneurysms.

Findings:

• The case highlights a rare but significant post-infective complication of Streptococcus gallolyticus endocarditis.
• Multifocal extracranial mycotic aneurysms developed despite apparent resolution of the primary infection.
• This suggests a potential for delayed or persistent vascular complications even after successful endocarditis management.

Implications:

• This case underscores the importance of vigilant long-term monitoring for vascular complications in patients treated for Streptococcus gallolyticus endocarditis.
• It may prompt further investigation into the mechanisms underlying aneurysm formation in the context of resolved endocarditis.
• Clinicians should consider the possibility of mycotic aneurysm development in patients with a history of S. gallolyticus endocarditis presenting with relevant neurological or vascular symptoms.