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- Title
Increased 18F-FDG uptake mimicking thyroid cancer in a patient with Hashimoto's thyroiditis.
- Authors
Schmid, Daniel T.; Kneifel, Stefan; Stoeckli, Sandro J.; Padberg, Barbara-C.; Merrill, Griff; Goerres, Gerhard W.
- Abstract
We report the case of a 68-year-old patient with a known paravertebral malignant schwannoma, sent to us for postoperative staging. A combined whole-body PET/CT scan showed only poor (18)F-fluorodeoxyglucose uptake in the region of the primary tumor but distinct increased fluorodeoxyglucose uptake in the left and right thyroid gland. Thyroid sonography showed two hypoechogenic nodules. Ultrasound-guided fine-needle aspiration biopsy of one nodule showed oxyphil transformed cells, compatible with malignancy. Based on these findings, the patient underwent a subtotal thyroidectomy. Histopathology of the specimen revealed a chronic follicular Hashimoto's thyroiditis. This case demonstrates that Hashimoto's thyroiditis can mimic thyroid cancer in PET but also in sonography and fine-needle aspiration biopsy.
- Subjects
ACOUSTIC neuroma; THYROID cancer; AUTOIMMUNE thyroiditis; ULTRASONIC imaging; MEDICAL radiography; RADIOSCOPIC diagnosis
- Publication
European Radiology, 2003, Vol 13, Issue 9, p2119
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-002-1619-4