Clinical analysis for the application of endoscopic ultrasonography in the diagnosis of patients with a retroperitoneal space-occupying lesion

Abstract

Objectives: To report our experience and to evaluate the application of endoscopic ultrasonography (EUS) in the qualitative diagnosis of retroperitoneal spaceoccupying lesions. Methods: Twenty-six patients with retroperitoneal space-occupying lesions confirmed by CT or MRI were studied. All the patients underwent endoscopic ultrasonography guided fine needle aspiration (EUSFNA) at the Department of Gastroenterology, Xiangyang Central Hospital, Hubei Province, China from August 2009 to August 2011. Different parameters were evaluated, such as complications of EUS-FNA, the ratio of definite pathological diagnosis, and the pathologic types of all the specimens. Results: Of the 26 patients, 24 had definite pathological diagnosis; the ratio of histodiagnosis was 92.3%. There were no complications such as hemorrhage, infection, or injury to the abdominal viscera in the process of EUS-FNA. Eight patients had benign tumors, with a ratio of 33.3%, and 16 patients had malignant tumors, with a ratio of 66.7%. Two patients had no definite pathological diagnosis because of the shortness of tissue sample. Eight patients did not undergo operation due to the diagnosis of benign tumors. Conclusions: The EUS-FNA has the advantage of lower complications, and higher diagnostic ratio, which is valuable in the qualitative diagnosis of retroperitoneal space-occupying lesions.