Definition of a Geographic Pattern: A geographic pattern is a term used as a general descriptor for lesions in which large areas of one colour, histologic pattern or radiologic density. Variably scalloped borders sharply interface with another pattern, colour or density, creating something like a national boundary and/or coastline.
Example: An example of a geographic pattern can be applied to nearly everything on Earth. Animals and plant species, disease infections, weather patterns, and man-made structures are an example of this.
Hope this helps! <3