Maroun Karam, MD; Michael A. Mecca, MD


Appl Radiol. 2004;33(9) 

In This Article

Abstract and Case Summary

A 76-year-old man presented to the nuclear medicine department for a follow-up whole-body iodine-131 (I-131) scan in February 2002 (Figures 1 and 2). This was prompted by a rising serum thyroglobulin measured at 6.6 ng/mL under suppression and 17.2 ng/mL after thyroid withdrawal. He had initially undergone near total thyroidectomy for papillary thyroid carcinoma (2-cm mass) in October 1993, followed by ablation with 150 mCi of I-131 in December 1993. Preablation and 1-week-postablation scans showed 2 foci of uptake in the neck, suggestive of remnant thyroid tissue. A follow-up scan obtained in 1994 showed no abnormal foci of uptake of I-131, suggesting complete ablation of the thyroid remnant.The patient was followed with serial thyroglobulins only, between 1994 and 2002.

(A) Anterior and (B) posterior views of the chest area on the I-131 whole-body scan with a marker placed on the xyphoid. There is abnormal activity in the midline above and to the left of the xyphoid.

Pretherapy view of the head on an I-131 wholebody scan.


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