Abstract:
Objective To study the significance of endoscopic ultrasonography (EUS) in the diagnosis and treatment of early esophageal cancer and precancerous lesions in high-risk areas.
Methods A total of 118 cases of early esophageal cancer and precancerous lesions were analyzed retrospectively based on EUS results performed in high-risk areas, i.e., She County and Ci County from June 2008 to June 2010. Endoscopic mucoscal resection (EMR) was performed on lesions that fulfilled the endoscopic treatment criteria, and the remaining lesions were removed surgically. After the resection, the invasion depth of the lesions was determined by an experienced pathologist and compared with the EUS estimation.
Results There were 97 cases of mucosal lesions and 21 cases of submucosal lesions diagnosed by EUS. Regarding the invasion depth, 87% (103 / 118) cases of EUS estimation were in accordance with the histopathological diagnosis. The diagnostic accuracy of EUS in mucosal and submucosal lesions was 90 % and 76 %, respectively.
Conclusions EUS is highly accurate for evaluating the feasibility of EMR for early esophageal cancer and precancerous lesions, thereby greatly improving the security and validity of EMR. EUS is very valuable in the endoscopic treatment of early esophageal cancer and precancerous lesions in high-risk areas.