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Updated: Mar 11, 2026
06:29
Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
Published on: June 11, 2019
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Cardiac Magnetic Resonance for Evaluating Catheter Related FDG Avidity
Daniel Jeong1, Kenneth L Gage1, Claudia G Berman1
1Department of Radiology, H. Lee Moffitt Cancer Center, Tampa, FL 33612, USA.
Case Reports in Radiology
|November 22, 2016
Summary
Positron emission tomography/computed tomography (PET/CT) identified an unusual finding at a patient's catheter tip. Cardiac magnetic resonance (CMR) confirmed the focus was bland thrombus, not metastatic melanoma.
Area of Science:
- Oncology
- Radiology
- Cardiology
Background:
- Metastatic melanoma can present with unusual findings.
- Central venous catheters are common in cancer patients.
- FDG avidity at catheter tips can indicate thrombus, infection, or malignancy.
Purpose of the Study:
- To differentiate between bland thrombus and metastatic melanoma at a catheter tip using advanced imaging.
- To evaluate the utility of cardiac magnetic resonance (CMR) in characterizing catheter-related findings.
Main Methods:
- A patient with metastatic melanoma and a central venous catheter underwent F(18) fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT).
- Findings of moderate FDG avidity at the catheter tip prompted further investigation.
- Confirmatory cardiac magnetic resonance (CMR) was performed.
Main Results:
- FDG PET/CT showed a focus of moderate avidity at the port catheter tip.
- The patient had a history of metastatic melanoma and elevated anticoagulation risk.
- Cardiac magnetic resonance (CMR) findings were consistent with bland catheter-related thrombus.
Conclusions:
- Cardiac magnetic resonance (CMR) effectively differentiated bland thrombus from potential malignancy at the catheter tip.
- FDG avidity at catheter tips in patients with metastatic disease requires careful evaluation.
- This case highlights the importance of confirmatory imaging for unusual findings.
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