PT  - JOURNAL ARTICLE
AU  - Soundar, Ramya
AU  - Kumar, Rakesh
AU  - Naswa, Niraj
AU  - Khangembam, Bangkim
AU  - Dhull, Varun
AU  - Sahoo, Manas
AU  - Bal, Chandrasekhar
AU  - Bandopadhyaya, Guru
AU  - Malhotra, Arun
TI  - 18FDG-PET/CT in detection of primary tumors in metastatic carcinoma of unknown primary site
DP  - 2011 May 01
TA  - Journal of Nuclear Medicine
PG  - 1868--1868
VI  - 52
IP  - supplement 1
4099  - http://jnm.snmjournals.org/content/52/supplement_1/1868.short
4100  - http://jnm.snmjournals.org/content/52/supplement_1/1868.full
SO  - J Nucl Med2011 May 01; 52
AB  - 1868 Objectives To evaluate the role of whole body 18F-FDG PET/CT in detection of primary tumors in metastatic carcinoma of unknown primary site Methods The study population consisted of 45 patients(23 males ,18 females; mean age(49.1%) with cytology or biopsy proven metastatic tumors and negative conventional imaging modalities (CT/MRI/Panendoscopy).Whole body 18F-FDG PET/CT imaging was done for all the patients. Patient data was retrospectively analysed. Histopathology and/clinical follow up was kept as gold standard. Results Among 45 patients 18F-FDG PET/CT detected primary site in 27 patients and for remaining 18 patients primary site was not localized. Among the 27 patients with positive results, 21(46.6%) patients were true positives and 6 patients were false positives. Among those 18 patients with unidentified primary site the result of 1 patient was false negative and the remaining 17(37.7%) were true negatives. Hence the rate of detection of primary tumors by 18F-FDG PET/CT is 46.6% Conclusions 18F-FDG PET/CT was found to be a useful diagnostic procedure and has high rate of detection of primary tumors in metastatic carcinoma of unknown primary sit