[Aim] To present a more appropriate excision method that also takes the position of an abnormal region in an organ and a positional relationship between a target organ and an organ around the target organ into consideration in a surgery assistance apparatus for presenting an excision region including the abnormal region in the organ. [Solution Means] A medical image obtainment means (11) that obtains a three-dimensional medical image of a subject to be examined, a target tissue region extraction means (12) that extracts a region of target tissue from the three-dimensional medical image obtained by the medical image obtainment means (11), an abnormal region extraction means (13) that extracts an abnormal region from the region of target tissue extracted by the target tissue region extraction means (12), an excision method obtainment means (16) that obtains, based on plural excision region determination conditions, plural excision methods in which excision regions satisfying the respective excision region determination conditions are set for the abnormal region, and an excision method presentation means (17) that presents the plural excision methods obtained by the excision method obtainment means are provided.
