Ultrasound findings of iodide mumps

Area of Science:

• Radiology
• Pharmacology

Background:

• Iodide mumps is an uncommon adverse event following iodinated contrast media administration.
• This case highlights a rare reaction in a patient undergoing advanced gastric cancer treatment.

Observation:

• A 73-year-old male with gastric cancer developed bilateral submandibular gland swelling approximately 10 minutes post-intravenous contrast injection.
• The swelling was progressive, accompanied by ultrasound findings of diffuse glandular enlargement and thickened septa.

Findings:

• The patient received 140 ml of low-osmolality contrast agent Ioxaglate.
• Submandibular gland swelling, a manifestation of iodide mumps, occurred as an acute, transient reaction.

Implications:

• This case underscores the importance of recognizing iodide mumps as a potential, albeit rare, complication of contrast-enhanced CT scans.
• Prompt recognition and understanding of the self-limiting nature of iodide mumps can aid in patient management and reassurance.