Lipiodol ultra-fluid - foreign body in the cheek

Area of Science:

• Radiology
• Otolaryngology
• Medical Imaging

Background:

• Iatrogenic injuries during sialography can lead to complications.
• Contrast medium extravasation requires careful monitoring and understanding.

Purpose of the Study:

• To report a rare case of persistent iodinated oil (Lipiodol Ultra-Fluid) foreign body in the cheek.
• To describe the unusual distribution and lack of resorption of the contrast agent.

Main Methods:

• Case report detailing a patient who underwent sialography.
• Radiological assessment of contrast medium distribution and soft tissue response over two years.

Main Results:

• Iodinated oil (Lipiodol Ultra-Fluid) extravasated from an iatrogenic Stensen's duct perforation.
• The contrast medium formed a foreign body in the cheek, persisting for two years without resorption.
• No radiological signs of reactive inflammatory changes were observed in the soft tissues.

Conclusions:

• Extravasation of iodinated oil can occur through ductal or mucosal perforations.
• The contrast agent may migrate subcutaneously, external to the platysma muscle.
• Persistent, non-resorbing foreign bodies from sialography are possible, even without inflammation.