Table 1:

Examples from the set of rules in our Info-Preservation Module for Negation and Uncertainty Detection and their corresponding matching sentences.

BACKGROUND: Radiographic examination of the chest. clinical history: 80 years of age, male. PA AND LATERAL CHEST, ___

FINDINGS: Heart size and mediastinal contours are normal. The right hilum is asymmetrically enlarged compared to the left hilum but has a similar size and configuration compared to a baseline radiograph___ ___. A chest CT performed in ___ demonstrated no evidence of a right hilum mass, and the observed asymmetry is probably due to a combination of a slight rotation related to mild scoliosis and a prominent pulmonary vascularity. Lungs are slightly hyperexpanded but grossly clear of pleural effusions.

IMPRESSION: No radiographic evidence of pneumonia.