BACKGROUND: Carcinoma of unknown primary (CUP) represents a heterogeneous group of metastatic malignancies for which no primary tumor site can be identified after extensive diagnostic workup. Failure to identify the primary site may negatively influence patient management. The aim of this review was to evaluate (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) as a diagnostic tool in patients with extracervical CUP. MATERIALS AND METHODS: A comprehensive literature search was performed and four publications were identified (involving 152 patients) evaluating (18)F-FDG PET/CT in CUP patients with extracervical metastases. All studies were retrospective and heterogeneous in inclusion criteria, study design, and diagnostic workup prior to (18)F-FDG PET/CT. RESULTS: (18)F-FDG PET/CT detected the primary tumor in 39.5% of patients with extracervical CUP. The lung was the most commonly detected primary tumor site (∼50%). The pooled estimates of sensitivity, specificity, and accuracy of (18)F-FDG PET/CT in the detection of the primary tumor site were 87%, 88%, and 87.5%, respectively. CONCLUSIONS: The present review of currently available data indicates that (18)F-FDG PET/CT might contribute to the identification of the primary tumor site in extracervical CUP. However, prospective studies with more uniform inclusion criteria are required to evaluate the exact value of this diagnostic tool.
BACKGROUND:Carcinoma of unknown primary (CUP) represents a heterogeneous group of metastatic malignancies for which no primary tumor site can be identified after extensive diagnostic workup. Failure to identify the primary site may negatively influence patient management. The aim of this review was to evaluate (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) as a diagnostic tool in patients with extracervical CUP. MATERIALS AND METHODS: A comprehensive literature search was performed and four publications were identified (involving 152 patients) evaluating (18)F-FDG PET/CT in CUP patients with extracervical metastases. All studies were retrospective and heterogeneous in inclusion criteria, study design, and diagnostic workup prior to (18)F-FDG PET/CT. RESULTS: (18)F-FDG PET/CT detected the primary tumor in 39.5% of patients with extracervical CUP. The lung was the most commonly detected primary tumor site (∼50%). The pooled estimates of sensitivity, specificity, and accuracy of (18)F-FDG PET/CT in the detection of the primary tumor site were 87%, 88%, and 87.5%, respectively. CONCLUSIONS: The present review of currently available data indicates that (18)F-FDG PET/CT might contribute to the identification of the primary tumor site in extracervical CUP. However, prospective studies with more uniform inclusion criteria are required to evaluate the exact value of this diagnostic tool.
Authors: C Nanni; D Rubello; P Castellucci; M Farsad; R Franchi; S Toso; C Barile; L Rampin; O Nibale; S Fanti Journal: Eur J Nucl Med Mol Imaging Date: 2005-02-22 Impact factor: 9.236
Authors: Didier Lardinois; Walter Weder; Thomas F Hany; Ehab M Kamel; Stephan Korom; Burkhardt Seifert; Gustav K von Schulthess; Hans C Steinert Journal: N Engl J Med Date: 2003-06-19 Impact factor: 91.245
Authors: Ali Osman Kaya; Ugur Coskun; Mustafa Unlu; Umit Ozgur Akdemir; Nuriye Yildirim Ozdemir; Nurullah Zengin; Mustafa Benekli; Ramazan Yildiz; Emel Yaman; Banu Ozturk; Mahmut Gumus; Aytug Uner; Deniz Yamac; Emel Ucgul; Suleyman Buyukberber Journal: Asian Pac J Cancer Prev Date: 2008 Oct-Dec
Authors: Rathan M Subramaniam; Anthony F Shields; Archana Sachedina; Lucy Hanna; Fenghai Duan; Barry A Siegel; Bruce E Hillner Journal: Oncologist Date: 2016-07-08
Authors: Anne Kirstine H Møller; Annika Loft; Anne K Berthelsen; Karen D Pedersen; Jesper Graff; Charlotte B Christensen; Junia C Costa; Lene T Skovgaard; Katharina Perell; Bodil L Petersen; Gedske Daugaard Journal: Oncologist Date: 2012-06-18
Authors: Muhammad Wasif Saif; Komal Wasif; Martin D Goodman; Sanjay Hegde; Mark Sterling; Robert Yacavone; Sunny Jaiswal; Barbara Weinstein; Kevin Daly; Valerie Relias Journal: JOP Date: 2019-11