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Improved Clinical Staging of Esophageal Cancer with FDG-PET  

Kim, Young-Hwan (Departments of Nuclear Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Choi, Joon-Young (Departments of Nuclear Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Lee, Kyug-Soo (Departments of Radiology, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Choi, Yong-Soo (Departments of Thoracic Surgery, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Lee, Eun-Jeong (Departments of Nuclear Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Chung, Hyun-Woo (Departments of Nuclear Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Lee, Su-Jin (Departments of Nuclear Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Lee, Kyung-Han (Departments of Nuclear Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Shim, Young-Mog (Departments of Thoracic Surgery, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Kim, Byung-Tae (Departments of Nuclear Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center)
Publication Information
The Korean Journal of Nuclear Medicine / v.38, no.4, 2004 , pp. 282-287 More about this Journal
Abstract
Purpose: Since preoperative staging in esophageal cancer is important in both therapy and prognosis, there had been many efforts to improve its accuracy. Recent studies indicate that whole body FDG-PET has high sensitivity in detection of metastasis in esophageal cancer. Therefore, we added FDG-PET to other conventional methods in staging esophageal cancer to evaluate the usefulness of this method. Materials & Methods: Subjects were 142 esophageal cancer patients (average $62.3{\pm}8.3$ yrs) who received CT and PET just before operation. First, we compared N stage and M stage of the CT or PET with those of the post-operative results. Then we compared the stage according to the EUS (T stage) and CT (N and M stage) or SUS (T stage) and CT & PET (N and M stage) to that according to the post-operative results. Results: Among 142 patients, surgical staging of 69 were N0 and 73 were N1. In M staging, 128 were M0 and 14 were M1. Sensitivity, specificity, and accuracy of N staging were 35.6%, 89.9%, 62.0% with CT and 58.9%, 71.0%, 64.7% with PET, respectively. In M staging, 14.3%, 96.9%, 88.7% with CT and 50.0%, 94.5%, 90.1%, with PET, respectively. The concordances of [EUS+CT] and [EUS+CT+PET] with post-operative results were 41.2% and 54.6%, respectively and there was significant improvement of staging with additional PET scan (p<0.005). Conclusion: The concordance of [EUS+CT+PET] with post-operative result was significantly increased compared to that of [EUS+CT]. Thus, the addition of FDG-PET with other conventional methods may enable more accurate preoperative staging.
Keywords
FDG-PET; Esophagus; Carcinoma;
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