Abstract: An apparatus (1) for treating a cancerous target site is provided. The apparatus comprises an electromagnetic emitter (10) comprising one or more electrodes with an electrically insulating coating for preventing electrical contact between the electrodes and the target site. The electromagnetic emitter (10) is configured to provide a tumour treating field at a target site (30) via the one or more electrodes, the tumour treating field being non-ionizing alternating electromagnetic field having a frequency of between 10 kHz to 300 kHz; and further having a magnetic flux density of between 0.1 pT and 1 mT. The apparatus further comprises a heat source (20) configured to provide heating at the target site to cause hyperthermia at the target site. The apparatus is configured to apply the non-ionizing alternating electromagnetic field and the heating independently. The apparatus comprises an electronic controller for electronically controlling the electromagnetic emitter and the heat source.