[Positron emission tomography/computed tomography in patients with cancer of unknown primary origin].
Cancer of unknown primary origin is not an uncommon clinical state, usually accounting for 2%-7% of all cancer patients.


METHODS
Positron emission tomography and computed tomography (PET/CT) was performed in 17 patients with histologically proven metastatic tumors of unknown primary and negative or inconclusive conventional diagnostic procedures.


RESULTS
The study included 17 patients (8 male and 9 female) age from 42 to 76 years. PET / CT has pointed out the probable localization of primary tumors in 10 patients. According histological diagnosis of carcinoma of unknown origin, most common is adenocarcinoma (64.71%). Origin of the primary cancer was found in 72.73% patients with adenocarcinoma 66.67% of respondents with squamocelular carcinoma and 50% of respondents with low differentiated carcinoma. Location of primary cancer was not found in 41.18% of the respondents, including patients with mucinous adenocarcinoma and patients with melanoma.


CONCLUSIONS
FDG PET/CT demonstrates very good whole-body imaging method in evaluation of patients with unknown primary carcinoma.
Lucić
S M
SM
Zavod za nuklearnu medicinu, Institut za onkologiju, Vojvodine, Sremska Kamenica.
Lucić
M A
MA
Peter
A
A
Jovanović
D
D
Vucaj-Cirilović
V
V
D000328:Adult; D000368:Aged; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D008875:Middle Aged; D009382:Neoplasms, Unknown Primary / Q000000981:diagnostic imaging*; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D014057:Tomography, X-Ray Computed
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18