ABSTRACT
Background and purpose: Currently endoscopic ultrasonography is clinically accepted for preoperative staging of gastric cancers. Endoscopic raucosai resection (EMR) and endoscopic subraucosal dissection (ESD) have been widely applied in the treatment of early gastric cancer. We need to improve the accuracy of pre-operative staging of gastric cancers, especially of early gastric cancers. This paper was to investigate the clinical significance of high frequency endoscopic ultrasound mini probe (UMP) in the preoperative T-staging of gastric cancer. Methods: Both UMP and MSCT were performed in 63 patients with pathologically proven gastric cancer frora Oct. 2008 to Apr.2009, and the results of UMP and MSCT were compared with surgical pathologic findings. Results: The accuracy of UMP and MSCT in T staging was 82.26% (51/62) and 88.71% (55/62) respectively, and there was no statistical difference (P>0.05). The accuracy of UMP and MSCT for early gastric cancer was 100.00% and 88.89% respectively.The accuracy of UMP and MSCT for advanced gastric cancer was 79.25% and 88.68% respectively. Conclusion: UMP appears to have a substantial diagnostic value for early stage gastric cancer. It is the approach of choice for superficial lesions.
ABSTRACT
Background and purpose:The radio-labeled glucose analogue F-18-fluoro-2-deoxyglucose(FDG) is the most widely used tracer in PET imaging,and its application in oncology has become one of the standard imaging modalities.But FDG uptake is not tumor specifi c.The aim of this paper was to study the endoscopic result with the patients of 18F-FDG accumulations in gastrointestinal tract after PET-CT examinations.Methods:Thirtythree patients with 18F-FDG accumulations in gastrointestinal tract were correlated with endoscopic and histopathologic results.Results:Of these,14 patients were harboring newly occurring cancers in gastrointestinal tract(esophagus cancer,2 patients;gastric cancer,5 patients;colorectal cancer,7 patients) .Eight patients were identified with precancerous lesions(adenoma,4 patients;hyperplastic polyp,1 patient;Barrett’s esophagus,1 patient;intestinal metaplasia of the gastric mucosa,2 patients) .Inflammatory lesions were detected in six patients(active colitis,5 patients;anastomotic leakage,1 patient) .In fi ve patients,PET/CT showed normal fi ndings in endoscopic examinations.The false positive rate of PET-CT was 33.33%(11/33) .Conclusion:Endoscopic result is important for patients of 18F-FDG accumulations in gastrointestinal patient.