The treatment option for gastric cancer is usually based on preoperative staging by imaging modalities. Endoscopic ultrasonography(EUS) and computed tomography(CT) have been used as the diagnostic modality of choice i...The treatment option for gastric cancer is usually based on preoperative staging by imaging modalities. Endoscopic ultrasonography(EUS) and computed tomography(CT) have been used as the diagnostic modality of choice in preoperative staging of gastric cancer. Magnetic resonance imaging(MRI) has been employed in several studies,and(18F) 2-Fluoro-2-deoxyglucose(FDG) positron emission tomography(PET) has emerged as a new promising imaging modality. The purpose of this article is to provide summarized information on preoperative staging using EUS,multi-detector row CT(MDCT),MRI and PET for gastric cancer. In T staging,both EUS and MDCT show high accuracy. MRI seemed to have better performance,but the number of MRI studies is limited. FDG-PET is not able to properly evaluate the depth of invasion. In N staging,the diagnostic accuracy of EUS,MDCT and MRI is not sufficient. In preoperative M staging,MDCT and FDGPET showed similar diagnostic accuracies. FDG-PET/CT fusion could be expected to show better performance in the future. Physicians should keep in mind that each diagnostic modality has advantages and limitations and choose an appropriate diagnostic strategy tailored for each patient.展开更多
Esophageal duplication cysts are rare inherited lesions usually diagnosed in early childhood.Most of them are found in the mediastinum and manifest themselves as separate masses along or in continuity with the native ...Esophageal duplication cysts are rare inherited lesions usually diagnosed in early childhood.Most of them are found in the mediastinum and manifest themselves as separate masses along or in continuity with the native esophagus.Their prevalence remains unknown and they are treated either surgically or endoscopically.In this report we describe a series of four adult patients in whom esophageal duplication cysts were localised intramurally as masses pressing on the esophageal lumen and who were diagnosed with endoscopic ultrasonography.All patients were initially referred to other centres for upper gastroduodenoscopy due to non-specific dyspeptic symptoms.After finding suspicious lesions in the esophagus their endoscopists referred them for endoscopic ultrasound examination at our centre.In two of the cases lesions mimicked esophageal varices and the other two submucosal tumours.In all four patients endoscopic ultrasonography has shown esophageal duplication cysts.Patients had no symptoms suggesting disease of the esophagus and required no treatment.As the true prevalence of esophageal cysts is unknown,it is very likely that in many patients,like in these four described by us,they may cause no symptoms,remain undetected and require no intervention.Increasing availability of new diagnostic modalities such as endoscopic ultrasonography may change the current view regarding the prevalence of esophageal duplication cysts and prove that they may,in fact,not be such rare findings.展开更多
文摘The treatment option for gastric cancer is usually based on preoperative staging by imaging modalities. Endoscopic ultrasonography(EUS) and computed tomography(CT) have been used as the diagnostic modality of choice in preoperative staging of gastric cancer. Magnetic resonance imaging(MRI) has been employed in several studies,and(18F) 2-Fluoro-2-deoxyglucose(FDG) positron emission tomography(PET) has emerged as a new promising imaging modality. The purpose of this article is to provide summarized information on preoperative staging using EUS,multi-detector row CT(MDCT),MRI and PET for gastric cancer. In T staging,both EUS and MDCT show high accuracy. MRI seemed to have better performance,but the number of MRI studies is limited. FDG-PET is not able to properly evaluate the depth of invasion. In N staging,the diagnostic accuracy of EUS,MDCT and MRI is not sufficient. In preoperative M staging,MDCT and FDGPET showed similar diagnostic accuracies. FDG-PET/CT fusion could be expected to show better performance in the future. Physicians should keep in mind that each diagnostic modality has advantages and limitations and choose an appropriate diagnostic strategy tailored for each patient.
文摘Esophageal duplication cysts are rare inherited lesions usually diagnosed in early childhood.Most of them are found in the mediastinum and manifest themselves as separate masses along or in continuity with the native esophagus.Their prevalence remains unknown and they are treated either surgically or endoscopically.In this report we describe a series of four adult patients in whom esophageal duplication cysts were localised intramurally as masses pressing on the esophageal lumen and who were diagnosed with endoscopic ultrasonography.All patients were initially referred to other centres for upper gastroduodenoscopy due to non-specific dyspeptic symptoms.After finding suspicious lesions in the esophagus their endoscopists referred them for endoscopic ultrasound examination at our centre.In two of the cases lesions mimicked esophageal varices and the other two submucosal tumours.In all four patients endoscopic ultrasonography has shown esophageal duplication cysts.Patients had no symptoms suggesting disease of the esophagus and required no treatment.As the true prevalence of esophageal cysts is unknown,it is very likely that in many patients,like in these four described by us,they may cause no symptoms,remain undetected and require no intervention.Increasing availability of new diagnostic modalities such as endoscopic ultrasonography may change the current view regarding the prevalence of esophageal duplication cysts and prove that they may,in fact,not be such rare findings.
