Question: What is “iodide mumps”?
Answer: The cited reference notes: “Iodide “mumps” was first described in a kidney-impaired patient after intravenous pyelography. It can develop after any imaging procedure that uses iodine-based contrast medium. Patients usually exhibit painless bilateral parotid or submandibular gland swellings that are rapid in onset (5 minutes to several days) and gradually disappear during the next 6-day period. At times, all salivary glands are enlarged, whereas sometimes only 1 gland is swollen, but either bilateral parotid or submandibular salivary gland swellings are the norm. No long-term consequences, other than 1 case of facial palsy, have been reported.” (Mandel L and Surattanont F. Bilateral parotid swelling: A review. 2002 Oral Surg, Oral Med, Oral Path, Oral Radiol and Endodont. 93(3): 221-237, see also “Image challenge”, NEJM 2017 at http://www.nejm.org/image-challenge)