SESSION TYPE: Lung Cancer Posters II
PRESENTED ON: Wednesday, October 24, 2012 at 01:30 PM - 02:30 PM
PURPOSE: To assess the feasibility of EBUS in the differential diagnosis between malignant and benign lesions by the following two characteristic echoic features indicating malignancy: halo sign;low echoes.
METHODS: EBUS images from 102 patients who undergone bronchoscopy for a peripheral lung lesion were analyzed. The sensitivity and specificity for each echoic feature or in combination in diagnosing malignancy or benignity were determined.
RESULTS: Halo sign and low echoes are two echoic features indicating malignancy. Low echoes has higher sensitivity (89.46%) and specificity (83%) in the diagnosis of malignancy, while halo sign has sensitivity (69.51%) and specificity (65%). The predictive value for the sensitivity of malignancy of a lesion with any one of the two echoic features is 94.6%. The predictive value for the specificity of malignancy of a lesion with both of these two echoic features is 93%.
CONCLUSIONS: These results indicate that EBUS is useful as an adjunct in lung cancer diagnosis, especially when peripheral lung lesions are invisible in traditional bronchoscopy.
CLINICAL IMPLICATIONS: Endobronchial ultrasonography is a safe and practical examinationmethod. It can provide physicians a chance to observe the lesions from inside and discover more information than that obtained through radiology in discriminating peripheral pulmonary lesions.
DISCLOSURE: The following authors have nothing to disclose: Huang Yu
No Product/Research Disclosure InformationGuangdong Provincial People Hospital, Guangzhou, China