<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><bold>Background.</bold> The purpose of using a whole-body scanning after the radioactive I-131 treatment is to screen functional residual or metastatic thyroid tissues. In whole-body scanning of some patients, false positive radioiodine I-131 uptakes may be seen in physiological uptake regions or atypical localizations.<bold>Case report.</bold> A 54 year-old woman underwent total thyroidectomy for papillary thyroid carcinoma. A positive appearance seen in the upper postero-lateral part of the right gluteal region was determined by a post-therapy I-131 whole body scan. The colour Doppler ultrasonography, magnetic resonance imaging features and histopathological characteristics of the excised lesion were presented. The lesion was demonstrated to be a foreign body granuloma.<bold>Conclusions.</bold> Unexpected positive findings in the post-therapy I-131 whole body scan should be confirmed with other imaging modalities in order to avoid unnecessary treatments. In uncertain situations, the diagnosis should be established histopathologically.</abstract>

Background. The purpose of using a whole-body scanning after the radioactive I-131 treatment is to screen functional residual or metastatic thyroid tissues. In whole-body scanning of some patients, false positive radioiodine I-131 uptakes may be seen in physiological uptake regions or atypical localizations.Case report. A 54 year-old woman underwent total thyroidectomy for papillary thyroid carcinoma. A positive appearance seen in the upper postero-lateral part of the right gluteal region was determined by a post-therapy I-131 whole body scan. The colour Doppler ultrasonography, magnetic resonance imaging features and histopathological characteristics of the excised lesion were presented. The lesion was demonstrated to be a foreign body granuloma.Conclusions. Unexpected positive findings in the post-therapy I-131 whole body scan should be confirmed with other imaging modalities in order to avoid unnecessary treatments. In uncertain situations, the diagnosis should be established histopathologically.

The false-positive radioiodine I-131 uptake in the foreign body granuloma located in gluteal adipose tissue

Department of Nuclear Medicine, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey

Department of Radiology, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey

Department of 1. Pathology, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey

Department of 2. Surgery, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey

Department of 1. Surgery, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey

Radiology and Oncology

Background. The purpose of using a whole-body scanning after the radioactive I-131 treatment is to screen functional residual or metastatic thyroid tissues. In...

The false-positive radioiodine I-131 uptake in the foreign body granuloma located in gluteal adipose tissue

Published Online: Jun 24, 2011

Page range: 28 - 31

DOI: https://doi.org/10.2478/v10019-011-0016-5

Keywords
thyroid cancer, false positive radioiodine uptake, post-therapy I-131 whole body scan, colour Doppler ultrasonography, magnetic resonance imaging

This content is open access.

The false-positive radioiodine I-131 uptake in the foreign body granuloma located in gluteal adipose tissue

Published Online: Jun 24, 2011

Page range: 28 - 31

DOI: https://doi.org/10.2478/v10019-011-0016-5

Keywordsthyroid cancer, false positive radioiodine uptake, post-therapy I-131 whole body scan, colour Doppler ultrasonography, magnetic resonance imaging

This content is open access.

Keywords
thyroid cancer, false positive radioiodine uptake, post-therapy I-131 whole body scan, colour Doppler ultrasonography, magnetic resonance imaging