[Benign hepatic cyst mimicking thyroid carcinoma metastasis].
BACKGROUND
The follow-up of differentiated thyroid carcinoma (DTC) for detecting persistent or recurrent disease is based on iodine whole body scan (WBS), the evaluation of the tumor marker thyroglobulin (Tg), the anti-thyroglobulin antibody (anti-Tg) and neck ultrasonography (US). Well known false-positive causes of WBS include inflammatory processes, some non-thyroid tumors, kidney or even sebaceous cysts .


METHODS
We reported a case of false-positive WBS, after therapeutic dose of (131I) NaI.


RESULTS
We enphasize the importance of recognizing benign liver cysts mimicking DTC metastasis.


CONCLUSIONS
False-positive and negative results may occur with WBS and must be recognized to avoid mismanagement.
Gonçalves
Ana Paula Cançado
AP
Hospital Felício Rocho, Belo Horizonte, MG, Brasil.
Jorge
Carolina Souza
CS
Resende
Jader Pereira
JP
Villela
José Ribamar Silva
JR
Soares
Maria Marta Sarquis
MM
Ramos
Adauto Versiani
AV
D000368:Aged; D002291:Carcinoma, Papillary / Q000000981:diagnostic imaging* / Q000556:secondary; D003560:Cysts / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes; D008107:Liver Diseases / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013954:Thyroglobulin / Q000627:therapeutic use; D013964:Thyroid Neoplasms; D014463:Ultrasonography; D051598:Whole Body Imaging
D007457:Iodine Radioisotopes; D013954:Thyroglobulin