[Four patients with incidentalomas of the thyroid discovered on 18-fluoro-deoxyglucose positron-emission tomography (FDG-PET)].
In 4 patients, an incidentaloma of the thyroid was found on 18-fluoro-deoxyglucose positron-emission tomography (FDG-PET). In the first patient, a 73-year-old man, a medullary thyroid carcinoma was discovered during the staging procedure ofa laryngeal carcinoma. In the second patient, an 81-year-old woman, a follicular thyroid carcinoma was found as a result of a FDG-PET evaluation of an adenocarcinoma of the lung. In the third patient, a 64-year-old woman, a papillary thyroid carcinoma was found during dissemination investigation after curative removal of an adrenocortical carcinoma. The last patient, a 78-year-old man, was found to have a thyroid incidentaloma on FDG-PET scan during staging ofa recurrence of a gastrointestinal stromal tumour. Thyroid incidentalomas are present on 1.2-2.3% of FDG-PET scans. Further diagnostic work-up of these lesions by fine needle aspiration is warranted since up to 50% are malignant. However, whether these malignant thyroid lesions are relevant is not always clear. Treatment depends on the primary disease for which the FDG-PET scan was initially made. This requires good evaluation and discussion with the patient.
Noordzij
M J
MJ
Medisch Centrum Leeuwarden, afd. Interne Geneeskunde, Henri Dunantweg 2, 8934 AD Leeuwarden.
de Heide
L J M
LJ
Links
T P
TP
Jager
P L
PL
Wolfenbuttel
B H R
BH
D000236:Adenoma / Q000000981:diagnostic imaging; D000368:Aged; D000369:Aged, 80 and over; D018276:Carcinoma, Medullary / Q000000981:diagnostic imaging; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D019275:Radiopharmaceuticals; D013961:Thyroid Gland / Q000000981:diagnostic imaging*; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging*; D014055:Tomography, Emission-Computed / Q000379:methods*
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18