18F-fluorodeoxyglucose positron emission tomography-computed tomography for suspected recurrent papillary thyroid cancer: early experience at Sunnybrook Health Sciences Centre.
J Otolaryngol Head Neck Surg
; 37(5): 712-7, 2008 Oct.
Article
in En
| MEDLINE
| ID: mdl-19128681
ABSTRACT
OBJECTIVES:
To report the initial experience with combined 18F-fluorodeoxyglucose positron emission tomography (FDG PET)/computed tomography (CT) imaging for suspected recurrent papillary differentiated thyroid cancer (DTC) at Sunnybrook Health Sciences Centre (SHSC), Toronto.DESIGN:
Single institution retrospective study.METHODS:
Consecutive patients from SHSC who underwent FDG PET/CT imaging for suspected recurrent DTC over a period of 2.5 years were identified and their charts reviewed. MAIN OUTCOMEMEASURE:
Qualitative appraisal of FDG PET/CT imaging in suspected recurrent DTC.RESULTS:
Sixteen patients (14F, 2M) were identified accounting for 17 FDG PET/CT scans. Three scans (18%) in 3 different patients were reported as suspicious for recurrent disease in the neck (1-3 lesions) and were considered "positive". All were subsequently confirmed pathologically (4-13 positive lymph nodes post operatively). Prior conventional imaging was abnormal in two patients. Two patients had an elevated non-stimulated thyroglobulin (TG) < 10 ng/mL (4.9 and 9.4). The remaining patient had a TG < 0.3 ng/mL but was anti-TG antibody positive (84 IUx10-3/L). With a median follow up of 15 months (range 7-36) there were no false positive or negative scans. Incidental pathology (breast cancer, large bowel polyps) was identified on a further 2/17 scans (12%).CONCLUSIONS:
FDG PET/CT imaging is able to detect recurrent DTC in patients with low TG levels. It can complement conventional imaging findings and exclude distant FDG-avid metastases prior to surgery. It may underestimate the number of positive lymph nodes in the neck. Occult pathology may be identified with whole body FDG PET/CT.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Thyroglobulin
/
Thyroid Neoplasms
/
Carcinoma, Papillary
/
Fluorodeoxyglucose F18
/
Positron-Emission Tomography
/
Neoplasm Recurrence, Local
Type of study:
Diagnostic_studies
/
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Qualitative_research
/
Risk_factors_studies
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
America do norte
Language:
En
Journal:
J Otolaryngol Head Neck Surg
Journal subject:
OTORRINOLARINGOLOGIA
Year:
2008
Document type:
Article