  The sequence of visits and procedures performed by the patient in the health
system, also known as the patient's pathway or trajectory, can reveal important
information about the clinical treatment adopted and the health service
provided. The rise of electronic health data availability made it possible to
assess the pathways of a large number of patients. Nevertheless, some
challenges also arose concerning how to synthesize these pathways and how to
mine them from the data, fostering a new field of research. The objective of
this review is to survey this new field of research, highlighting
representation models, mining techniques, methods of analysis, and examples of
case studies.
