Case History: A 23-year-old man with a congenital bicuspid aortic valve with a two-month history of fatigue, progressive headaches, generalized weakness, weight loss and leg pain.
[[{"type":"media","view_mode":"media_crop","fid":"12148","attributes":{"alt":"","class":"media-image","id":"media_crop_1742478784744","media_crop_h":"0","media_crop_image_style":"-1","media_crop_instance":"329","media_crop_rotate":"0","media_crop_scale_h":"0","media_crop_scale_w":"0","media_crop_w":"0","media_crop_x":"0","media_crop_y":"0","title":" ","typeof":"foaf:Image"}}]]
Figure 1: MRI
[[{"type":"media","view_mode":"media_crop","fid":"12147","attributes":{"alt":"","class":"media-image","id":"media_crop_4890187105841","media_crop_h":"0","media_crop_image_style":"-1","media_crop_instance":"328","media_crop_rotate":"0","media_crop_scale_h":"0","media_crop_scale_w":"0","media_crop_w":"0","media_crop_x":"0","media_crop_y":"0","title":" ","typeof":"foaf:Image"}}]]
Figure 2: MRA
[[{"type":"media","view_mode":"media_crop","fid":"12149","attributes":{"alt":"","class":"media-image","id":"media_crop_5374172613857","media_crop_h":"0","media_crop_image_style":"-1","media_crop_instance":"330","media_crop_rotate":"0","media_crop_scale_h":"0","media_crop_scale_w":"0","media_crop_w":"0","media_crop_x":"0","media_crop_y":"0","title":" ","typeof":"foaf:Image"}}]]
Figure 3: DSA
[[{"type":"media","view_mode":"media_crop","fid":"12150","attributes":{"alt":"","class":"media-image","id":"media_crop_3335172460957","media_crop_h":"0","media_crop_image_style":"-1","media_crop_instance":"331","media_crop_rotate":"0","media_crop_scale_h":"0","media_crop_scale_w":"0","media_crop_w":"0","media_crop_x":"0","media_crop_y":"0","title":" ","typeof":"foaf:Image"}}]]
Figure 4: CTA
Streptococcus oralis was identified in blood culture and echocardiography showed vegetations and moderate aortic stenoses with a paravalvular abscess. A cerebral magnetic resonance (MRI and MRA) (Fig.1,2) and digital substraction angiography (DSA. Fig 3)showed an unruptured aneurysm of the superior division of the right MCA, and a computed tomography angiography (CTA) of the lower extremities showed an unruptured aneurysm of the left tibioperoneal trunk (Fig 4; arrow), probably corresponding to mycotic aneurysms.
The patient underwent cardiac surgery, and then was put on a six-week course of antibiotics. MRA and CTA follow-up were performed showing that aneurysms had not changed in size.
An elective surgical repair of the aneurysms was performed to prevent hemorrhage, and the patient remains asymptomatic six months later.
Discussion: Cerebral mycotic aneurysms of an infectious etiology are rare neurovascular pathologies. Cerebral aneurysms far distal to the usual sites of congenital aneurysms, organisms in blood chemistry, endocarditis, symptoms of infection, atypically located intracerebral hemorrhages, and young patients with immunodeficiency are strong factors for an infectious aneurysm. Cerebral angiography is mandatory to exclude aneurysms at other sites and early targeted antimicrobial treatment is crucial in these cases. Reconstructive procedures without sacrificing the parent artery often fail due to the fusiform and fragile aneurysm wall.
Mario MartÃnez-Galdámez, MD
Hospital ClÃnico Universitario de Valladolid, Spain
European Society of Breast Imaging Issues Updated Breast Cancer Screening Recommendations
April 24th 2024One of the recommendations from the European Society of Breast Imaging (EUSOBI) is annual breast MRI exams starting at 25 years of age for women deemed to be at high risk for breast cancer.
Study Reveals Benefits of Photon-Counting CT for Assessing Acute Pulmonary Embolism
April 23rd 2024In comparison to energy-integrating detector CT for the workup of suspected acute pulmonary embolism, the use of photon-counting detector CT reduced radiation dosing by 48 percent, according to newly published research.