PURPOSE: In order to assess the diagnostic performance of Positron emission tomography/Computed tomography (PET/CT) for detecting recurrence in gastric cancer patients with clinical or radiologic suspicion of recurrence after surgical resection. MATERIALS AND METHODS: Over a 4-year period, 105 post-operative patients with gastric cancer, who underwent PET/CT due to clinical or radiologic suspicion of recurrence during follow-up, were collected after confirming their PET/CT findings. The number and site of positive FDG uptake were retrospectively analyzed, and were correlated with the final diagnosis, by calculating the diagnostic values and assessing the causes of misdiagnosis. RESULTS: Of all 105 patients, 75 patients were confirmed to have true recurrence with 108 recurrence sites. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy for diagnosing true recurrence on a per-person basis were 75%, 77%, 89%, 55%, and 75%, respectively. On a per-lesion basis, 75 (69%) of 108 true recurrences showed positive FDG uptake, while 75 (89%) of 84 positive FDG uptake was confirmed to have true recurrence. CONCLUSION: PET/CT was relatively accurate in detecting recurrence in post-operative patients with gastric cancer. Moreover, PET/CT might be helpful in confirming the presence of recurrence particularly in patients who were highly suspicious of recurrence, because of its high positive predictability.
PURPOSE: In order to assess the diagnostic performance of Positron emission tomography/Computed tomography (PET/CT) for detecting recurrence in gastric cancerpatients with clinical or radiologic suspicion of recurrence after surgical resection. MATERIALS AND METHODS: Over a 4-year period, 105 post-operative patients with gastric cancer, who underwent PET/CT due to clinical or radiologic suspicion of recurrence during follow-up, were collected after confirming their PET/CT findings. The number and site of positive FDG uptake were retrospectively analyzed, and were correlated with the final diagnosis, by calculating the diagnostic values and assessing the causes of misdiagnosis. RESULTS: Of all 105 patients, 75 patients were confirmed to have true recurrence with 108 recurrence sites. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy for diagnosing true recurrence on a per-person basis were 75%, 77%, 89%, 55%, and 75%, respectively. On a per-lesion basis, 75 (69%) of 108 true recurrences showed positive FDG uptake, while 75 (89%) of 84 positive FDG uptake was confirmed to have true recurrence. CONCLUSION: PET/CT was relatively accurate in detecting recurrence in post-operative patients with gastric cancer. Moreover, PET/CT might be helpful in confirming the presence of recurrence particularly in patients who were highly suspicious of recurrence, because of its high positive predictability.
Authors: Leila Sisic; Moritz J Strowitzki; Susanne Blank; Henrik Nienhueser; Sara Dorr; Georg Martin Haag; Dirk Jäger; Katja Ott; Markus W Büchler; Alexis Ulrich; Thomas Schmidt Journal: Gastric Cancer Date: 2017-07-24 Impact factor: 7.370
Authors: Jung Ho Shim; Han Mo Yoo; Han Hong Lee; Jun Gi Kim; Hae Myung Jeon; Kyo Young Song; Cho Hyun Park Journal: Surg Endosc Date: 2011-05-02 Impact factor: 4.584
Authors: A J Conde-Moreno; J L Lopez-Guerra; V A Macias; M L Vázquez de la Torre; P Samper Ots; S San José-Maderuelo; J Pastor Peidro; J López-Torrecilla; J Expósito-Hernández Journal: Clin Transl Oncol Date: 2015-09-02 Impact factor: 3.405