A medical support apparatus includes a grouping unit for grouping plural lesions of a patient body treated by an anticancer chemotherapy into plural groups according to clinical onsets of the lesions. An information generator creates therapeutic effect information of therapeutic effect of the anticancer chemotherapy for respectively the plural groups. An information provider provides the therapeutic effect information. Preferably, assuming that the anticancer chemotherapy for the patient body is performed in plural therapy sessions, the groups are defined with reference to starting dates of respectively the plural therapy sessions of the anticancer chemotherapy. The lesion is further grouped (sub-grouped) according to at least one of a body organ where the lesion has occurred, and a lesion type of the lesion.
