Diagnosis of abdominal aortic prosthesis infection with FDG-PET/CT

Hans Balink1, Michel M P J Reijnen

  • 1Department of Nuclear Medicine, Medical Centre Leeuwarden, Leeuwarden, The Netherlands. hans.balink@znb.nl

Insights

Aortic graft infection was diagnosed in a 79-year-old man using 2-deoxy-2-[F18]fluoro-d-glucose-positron emission tomographic/CT (FDG-PET/CT). This advanced imaging identified infection missed by standard CT, enabling timely surgical intervention and recovery.

Area of Science:

  • Vascular Surgery
  • Infectious Diseases
  • Nuclear Medicine

Background:

  • A 79-year-old male presented with recurrent fever and chills six years post-aortic bifurcation graft implantation.
  • Initial investigations revealed elevated infection parameters, but conventional computed tomographic (CT) scans did not indicate graft infection.

Observation:

  • Blood cultures identified multiple enteric bacteria, prompting further investigation.
  • A 2-deoxy-2-[F18]fluoro-d-glucose-positron emission tomographic/CT (FDG-PET/CT) scan was performed.
  • The FDG-PET/CT scan revealed characteristic ring-shaped pathological uptake at the proximal anastomosis site.

Findings:

  • Surgical exploration confirmed an infected aortic graft.
  • A 1-cm defect was noted in the distal duodenum.
  • Bacterial cultures from the explanted graft were positive for enteric bacteria.

Implications:

  • FDG-PET/CT is a valuable tool for diagnosing prosthetic graft infections, particularly when conventional imaging is inconclusive.
  • Early detection and surgical intervention are crucial for managing aortic graft infections.
  • Successful treatment involved graft explantation, repair of duodenal defect, and prolonged antibiotic/antimycotic therapy.

Related Concept Videos

Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...