Ruptured Intracranial Infectious Aneurysm Mimicking an Expansive Brain Tumor in the Setting of Subacute Infective Endocarditis.

ABSTRACT: Infective endocarditis (IE) can lead to infectious intracranial aneurysms (IIAs) in a small percentage of cases. These aneurysms may rupture, resulting in intracerebral bleeding that is typically evident on neuroimaging. However, diagnosis becomes challenging when blood cultures and echocardiography are unremarkable, and neuroimaging is misinterpreted as a neoplasm due to overlapping features. We report a rare case of a ruptured IIA initially misdiagnosed as a brain tumor. A 43-year-old man presented with seizures, right-sided hemiparesis, and a 3-month history of fever, malaise, and 15-kg weight loss. Head computed tomography (CT) revealed a left frontal lesion with solid and hemorrhagic components, vasogenic edema, and intraventricular hemorrhage. Brain magnetic resonance imaging showed

SUBMITTER: Gonzales-Uribe A 

PROVIDER: S-EPMC12697750 | biostudies-literature | 2025 Jul-Sep

REPOSITORIES: biostudies-literature