I-131 false positive uptake in a huge parapelvic renal cyst.


A male patient had undergone total thyroidectomy for thyroid papillary carcinoma. He was administered thyroablation activity of radioiodine. Whole body imaging after diagnostic activity of 131-I demonstrated intense radioiodine uptake in the right side of the upper abdominal region. The serum thyroglobulin level was low. Ultrasonography demonstrated a large irregular anechoic structure in the centre of the right kidney--a cyst in the parapelvic region. Renal cysts can lead to erroneous interpretation of radioiodine scintigraphy.

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@article{Kraft2011I131FP, title={I-131 false positive uptake in a huge parapelvic renal cyst.}, author={Otakar Kraft and Pavel {\vS}irů{\vc}ek and Lubom{\'i}r Mrhac and Martin Havel}, journal={Nuclear medicine review. Central & Eastern Europe}, year={2011}, volume={14 1}, pages={36-7} }