title: I-131 false positive uptake in a huge parapelvic renal cyst.
abstract: 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.
authors.affiliation: Clinic of Nuclear Medicine, University Hospital Ostrava, Czech Republic, Clinic of Nuclear Medicine, 17. listopadu 1790, Ostrava–Poruba, Czech Republic. otakar.kraft@fno.cz
authors.forename: Otakar
authors.initials: O
authors.lastname: Kraft
authors.forename: Pavel
authors.initials: P
authors.lastname: Sirucek
authors.forename: Lubomír
authors.initials: L
authors.lastname: Mrhac
authors.forename: Martin
authors.initials: M
authors.lastname: Havel
mesh_terms: D000368:Aged; D001692:Biological Transport; D005189:False Positive Reactions; D006801:Humans; D007457:Iodine Radioisotopes / Q000378:metabolism; D052177:Kidney Diseases, Cystic / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000473:pathology*; D008297:Male; D010388:Pelvis / Q000000981:diagnostic imaging / Q000473:pathology*; D011877:Radionuclide Imaging
chemical_list: D007457:Iodine Radioisotopes