Abstract
BackgroundSedation or anesthesia is often necessary in pediatrics when magnetic resonance imaging is performed. This anesthesia outside of the operation room combines specific requirements and risks. Ferromagnetic foreign bodies are a clear contraindication for magnetic resonance imaging due to the high magnetic field within the scanner. However, insertion of various small objects in mouth, nose or external auditory is not uncommon in small children and often remains unnoticed until specific symptoms develop. Early warning sings like movement of the object or heat development are then concealed by sedation or anesthesia preventing a timely termination of the possibly hazardous procedure.Case presentationWe present a case of a three year old Caucasian with an acute sinusitis due to unknown ferromagnetic foreign body in his nasal cavity. As soon as the suspicion was raised the procedure was aborted and the object that revealed to be a small button battery was successfully removed.ConclusionsThe potential of unwelcome side effects and effective safety strategies of magnetic resonance imaging are discussed as well as the complications arising from ingested batteries.
Highlights
Sedation or anesthesia is often necessary in pediatrics when magnetic resonance imaging is performed
The potential of unwelcome side effects and effective safety strategies of magnetic resonance imaging are discussed as well as the complications arising from ingested batteries
Outside of the operation room anesthesia is characterized by specific requirements and risks
Summary
There is a considerable growth in the number and types of procedures performed outside of the operation room. We report a case of a patient who underwent magnetic resonance imaging due to an acute sinusitis presenting with an unknown ferromagnetic foreign body in his nasal cavity as cause of infection. Due to the uncooperativeness of the child and because of the intended immediate operative procedure it was decided to perform the MRI scan under general anesthesia. The first image revealed an extinction of the face indicating a ferromagnetic object in the scanned region (Figure 1). A ferromagnetic foreign body in either mouth or nose was suspected and the child was removed from the MRI scanner. The detailed inspection of the nasal cavity revealed a small foreign body that could be removed by colleagues from our ear nose throat (ENT) department. On a follow-up visit four weeks later the child was doing remarkably well without any permanent issues
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