False positive 131I total body scan due to an ectasia of the common carotidis.
A cervical accumulation of radioiodine at Total Body Scan (TBS) in a patient who had been thyroidectomized for a follicular thyroid carcinoma led to unnecessary radioiodine treatment. Thyroglobulin measurements indicated constantly low levels. Following ultrasound scanning of the neck, echo-doppler examination of the cervical vessels and angiography with 99Tc, this area of increased activity at TBS imaging was shown to be due to an ectasia of the right common carotidis causing blood stasis and reverse flow.
Giuffrida
D
D
Cattedra di Endocrinologia, Università di Catania, Ospedale Garibaldi, Italy.
Garofalo
M R
MR
Cacciaguerra
G
G
Freni
V
V
Ippolito
A
A
Regalbuto
C
C
Santonocito
M G
MG
Belfiore
A
A
D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D017536:Carotid Artery, Common / Q000000981:diagnostic imaging / Q000503:physiopathology*; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes / Q000627:therapeutic use; D008875:Middle Aged; D011877:Radionuclide Imaging; D013667:Technetium; D013954:Thyroglobulin / Q000097:blood; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D014463:Ultrasonography
D007457:Iodine Radioisotopes; D013667:Technetium; D013954:Thyroglobulin