A system, method and computer readable storage medium for analyzing a medical report to determine if interval change data corresponding to a change of the medical data over time is required, extracting keywords from a predetermined field in the medical report corresponding to an interval change, categorizing the extracted keywords into a first category corresponding to the interval change if the keywords conform to a first pattern and categorizing the extracted keywords into a second category if the keywords conform to a second pattern and generating a notification message if the keywords correspond to the second category.
