Delayed absorption of oxidized cellulose (Surgicel; Johnson & Johnson, New Brunswick, NJ) may mimic a pseudoabscess or a recurrent mass on sonography after tumor surgery. Here we present 3 cases of thyroidectomy in which Surgicel was still apparent on sonography after 26 to 47 months of follow-up. We show sonographic findings and discuss the utility of sonography for diagnosis of delayed absorption of Surgicel in post-thyroidectomy patients.
Keywords: delayed absorption; head and neck ultrasound; oxidized cellulose; sonography; thyroid; thyroidectomy.
© 2016 by the American Institute of Ultrasound in Medicine.